blob: 180499f43b7be31ed92873869e0feedebce6acd1 [file] [log] [blame]
Paul Elliott2238eed2022-07-08 18:19:12 +01001Mbed TLS ChangeLog (Sorted per branch, date)
2
David Horstmann26abff12024-10-11 17:19:20 +01003= Mbed TLS 3.6.2 branch released 2024-10-11
David Horstmann624bcf12024-10-11 17:19:19 +01004
5Security
6 * Fix a buffer overflow in mbedtls_pk_write_pubkey(),
7 mbedtls_pk_write_pubkey_der(), mbedtls_pk_write_pubkey_pem(),
8 mbedtls_pk_write_key_der() and mbedtls_pk_write_key_pem().
9 With MBEDTLS_USE_PSA_CRYPTO turned on, these functions would
10 write to a location before the start of the output buffer if it was less
11 than the size of the key being written and also less than
12 PK_MAX_EC_PUBLIC_KEY_SIZE (for EC public keys) and
13 PSA_EXPORT_KEY_PAIR_MAX_SIZE (for RSA private keys).
14 This buffer overflow only occurs for keys with the type MBEDTLS_PK_OPAQUE.
15
David Horstmannea44fa72024-08-28 20:49:08 +010016= Mbed TLS 3.6.1 branch released 2024-08-30
David Horstmann9cf929d2024-08-28 20:48:36 +010017
18API changes
19 * The experimental functions psa_generate_key_ext() and
20 psa_key_derivation_output_key_ext() are no longer declared when compiling
21 in C++. This resolves a build failure under C++ compilers that do not
22 support flexible array members (a C99 feature not adopted by C++).
23 Fixes #9020.
24
25Default behavior changes
26 * In a PSA-client-only build (i.e. MBEDTLS_PSA_CRYPTO_CLIENT &&
27 !MBEDTLS_PSA_CRYPTO_C), do not automatically enable local crypto when the
28 corresponding PSA mechanism is enabled, since the server provides the
29 crypto. Fixes #9126.
David Horstmann4c8ca722024-08-28 20:58:24 +010030 * A TLS handshake may now call psa_crypto_init() if TLS 1.3 is enabled.
31 This can happen even if TLS 1.3 is offered but eventually not selected
32 in the protocol version negotiation.
33 * By default, the handling of TLS 1.3 tickets by the Mbed TLS client is now
34 disabled at runtime. Applications that were using TLS 1.3 tickets
35 signalled by MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET return values now
36 need to enable the handling of TLS 1.3 tickets through the new
37 mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets() API.
David Horstmann9cf929d2024-08-28 20:48:36 +010038
39New deprecations
40 * The experimental functions psa_generate_key_ext() and
41 psa_key_derivation_output_key_ext() are deprecated in favor of
42 psa_generate_key_custom() and psa_key_derivation_output_key_custom().
43 They have almost exactly the same interface, but the variable-length
44 data is passed in a separate parameter instead of a flexible array
45 member.
46 * The following cryptographic mechanisms are planned to be removed
47 in Mbed TLS 4.0:
48 - DES (including 3DES).
49 - PKCS#1v1.5 encryption/decryption (RSAES-PKCS1-v1_5).
50 (OAEP, PSS, and PKCS#1v1.5 signature are staying.)
51 - Finite-field Diffie-Hellman with custom groups.
52 (RFC 7919 groups remain supported.)
53 - Elliptic curves of size 225 bits or less.
54 * The following cipher suites are planned to be removed from (D)TLS 1.2
55 in Mbed TLS 4.0:
56 - TLS_RSA_* (including TLS_RSA_PSK_*), i.e. cipher suites using
57 RSA decryption.
58 (RSA signatures, i.e. TLS_ECDHE_RSA_*, are staying.)
59 - TLS_ECDH_*, i.e. cipher suites using static ECDH.
60 (Ephemeral ECDH, i.e. TLS_ECDHE_*, is staying.)
61 - TLS_DHE_*, i.e. cipher suites using finite-field Diffie-Hellman.
62 (Ephemeral ECDH, i.e. TLS_ECDHE_*, is staying.)
63 - TLS_*CBC*, i.e. all cipher suites using CBC.
64 * The following low-level application interfaces are planned to be removed
65 from the public API in Mbed TLS 4.0:
66 - Hashes: hkdf.h, md5.h, ripemd160.h, sha1.h, sha3.h, sha256.h, sha512.h;
67 - Random generation: ctr_drbg.h, hmac_drbg.h, entropy.h;
68 - Ciphers and modes: aes.h, aria.h, camellia.h, chacha20.h, chachapoly.h,
69 cipher.h, cmac.h, gcm.h, poly1305.h;
70 - Private key encryption mechanisms: pkcs5.h, pkcs12.h.
71 - Asymmetric cryptography: bignum.h, dhm.h, ecdh.h, ecdsa.h, ecjpake.h,
72 ecp.h, rsa.h.
73 The cryptographic mechanisms remain present, but they will only be
74 accessible via the PSA API (psa_xxx functions introduced gradually
75 starting with Mbed TLS 2.17) and, where relevant, `pk.h`.
76 For guidance on migrating application code to the PSA API, please consult
77 the PSA transition guide (docs/psa-transition.md).
78 * The following integration interfaces are planned to be removed
79 in Mbed TLS 4.0:
80 - MBEDTLS_xxx_ALT replacement of cryptographic modules and functions.
81 Use PSA transparent drivers instead.
82 - MBEDTLS_PK_RSA_ALT and MBEDTLS_PSA_CRYPTO_SE_C.
83 Use PSA opaque drivers instead.
84
85Features
86 * When the new compilation option MBEDTLS_PSA_KEY_STORE_DYNAMIC is enabled,
87 the number of volatile PSA keys is virtually unlimited, at the expense
88 of increased code size. This option is off by default, but enabled in
89 the default mbedtls_config.h. Fixes #9216.
90
91Security
92 * Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does
93 not cause the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when
94 MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and MBEDTLS_CTR_DRBG_C are disabled.
David Horstmannfedf9a22024-08-28 19:04:26 +010095 CVE-2024-45157
David Horstmann9cf929d2024-08-28 20:48:36 +010096 * Fix a stack buffer overflow in mbedtls_ecdsa_der_to_raw() and
97 mbedtls_ecdsa_raw_to_der() when the bits parameter is larger than the
98 largest supported curve. In some configurations with PSA disabled,
99 all values of bits are affected. This never happens in internal library
100 calls, but can affect applications that call these functions directly.
David Horstmannfedf9a22024-08-28 19:04:26 +0100101 CVE-2024-45158
David Horstmann9cf929d2024-08-28 20:48:36 +0100102 * With TLS 1.3, when a server enables optional authentication of the
103 client, if the client-provided certificate does not have appropriate values
104 in keyUsage or extKeyUsage extensions, then the return value of
105 mbedtls_ssl_get_verify_result() would incorrectly have the
106 MBEDTLS_X509_BADCERT_KEY_USAGE and MBEDTLS_X509_BADCERT_EXT_KEY_USAGE bits
107 clear. As a result, an attacker that had a certificate valid for uses other
108 than TLS client authentication could be able to use it for TLS client
109 authentication anyway. Only TLS 1.3 servers were affected, and only with
110 optional authentication (required would abort the handshake with a fatal
111 alert).
David Horstmannfedf9a22024-08-28 19:04:26 +0100112 CVE-2024-45159
David Horstmann9cf929d2024-08-28 20:48:36 +0100113
114Bugfix
115 * Fix TLS 1.3 client build and runtime when support for session tickets is
116 disabled (MBEDTLS_SSL_SESSION_TICKETS configuration option). Fixes #6395.
117 * Fix compilation error when memcpy() is a function-like macros. Fixes #8994.
118 * MBEDTLS_ASN1_PARSE_C and MBEDTLS_ASN1_WRITE_C are now automatically enabled
119 as soon as MBEDTLS_RSA_C is enabled. Fixes #9041.
120 * Fix undefined behaviour (incrementing a NULL pointer by zero length) when
121 passing in zero length additional data to multipart AEAD.
122 * Fix rare concurrent access bug where attempting to operate on a
123 non-existent key while concurrently creating a new key could potentially
124 corrupt the key store.
125 * Fix error handling when creating a key in a dynamic secure element
126 (feature enabled by MBEDTLS_PSA_CRYPTO_SE_C). In a low memory condition,
127 the creation could return PSA_SUCCESS but using or destroying the key
128 would not work. Fixes #8537.
129 * Fix issue of redefinition warning messages for _GNU_SOURCE in
130 entropy_poll.c and sha_256.c. There was a build warning during
131 building for linux platform.
132 Resolves #9026
133 * Fix a compilation warning in pk.c when PSA is enabled and RSA is disabled.
134 * Fix the build when MBEDTLS_PSA_CRYPTO_CONFIG is enabled and the built-in
135 CMAC is enabled, but no built-in unauthenticated cipher is enabled.
136 Fixes #9209.
137 * Fix redefinition warnings when SECP192R1 and/or SECP192K1 are disabled.
138 Fixes #9029.
139 * Fix psa_cipher_decrypt() with CCM* rejecting messages less than 3 bytes
140 long. Credit to Cryptofuzz. Fixes #9314.
141 * Fix interference between PSA volatile keys and built-in keys
142 when MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS is enabled and
143 MBEDTLS_PSA_KEY_SLOT_COUNT is more than 4096.
144 * Document and enforce the limitation of mbedtls_psa_register_se_key()
145 to persistent keys. Resolves #9253.
146 * Fix Clang compilation error when MBEDTLS_USE_PSA_CRYPTO is enabled
147 but MBEDTLS_DHM_C is disabled. Reported by Michael Schuster in #9188.
148 * Fix server mode only build when MBEDTLS_SSL_SRV_C is enabled but
149 MBEDTLS_SSL_CLI_C is disabled. Reported by M-Bab on GitHub in #9186.
150 * When MBEDTLS_PSA_CRYPTO_C was disabled and MBEDTLS_ECDSA_C enabled,
151 some code was defining 0-size arrays, resulting in compilation errors.
152 Fixed by disabling the offending code in configurations without PSA
153 Crypto, where it never worked. Fixes #9311.
154 * Fix unintended performance regression when using short RSA public keys.
155 Fixes #9232.
156 * Fixes an issue where some TLS 1.2 clients could not connect to an
157 Mbed TLS 3.6.0 server, due to incorrect handling of
158 legacy_compression_methods in the ClientHello.
159 Fixes #8995, #9243.
160 * Fix TLS connections failing when the handshake selects TLS 1.3
161 in an application that does not call psa_crypto_init().
162 Fixes #9072.
163 * Fix TLS connection failure in applications using an Mbed TLS client in
164 the default configuration connecting to a TLS 1.3 server sending tickets.
165 See the documentation of
166 mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets() for more
167 information.
168 Fixes #8749.
169 * Fix a memory leak that could occur when failing to process an RSA
170 key through some PSA functions due to low memory conditions.
171 * Fixed a regression introduced in 3.6.0 where the CA callback set with
172 mbedtls_ssl_conf_ca_cb() would stop working when connections were
173 upgraded to TLS 1.3. Fixed by adding support for the CA callback with TLS
174 1.3.
175 * Fixed a regression introduced in 3.6.0 where clients that relied on
176 optional/none authentication mode, by calling mbedtls_ssl_conf_authmode()
177 with MBEDTLS_SSL_VERIFY_OPTIONAL or MBEDTLS_SSL_VERIFY_NONE, would stop
178 working when connections were upgraded to TLS 1.3. Fixed by adding
179 support for optional/none with TLS 1.3 as well. Note that the TLS 1.3
180 standard makes server authentication mandatory; users are advised not to
181 use authmode none, and to carefully check the results when using optional
182 mode.
183 * Fixed a regression introduced in 3.6.0 where context-specific certificate
184 verify callbacks, set with mbedtls_ssl_set_verify() as opposed to
185 mbedtls_ssl_conf_verify(), would stop working when connections were
186 upgraded to TLS 1.3. Fixed by adding support for context-specific verify
187 callback in TLS 1.3.
188
189Changes
190 * Warn if mbedtls/check_config.h is included manually, as this can
191 lead to spurious errors. Error if a *adjust*.h header is included
192 manually, as this can lead to silently inconsistent configurations,
193 potentially resulting in buffer overflows.
194 When migrating from Mbed TLS 2.x, if you had a custom config.h that
195 included check_config.h, remove this inclusion from the Mbed TLS 3.x
196 configuration file (renamed to mbedtls_config.h). This change was made
197 in Mbed TLS 3.0, but was not announced in a changelog entry at the time.
David Horstmann9cf929d2024-08-28 20:48:36 +0100198
Minos Galanakis4492dbd2024-03-21 15:52:49 +0000199= Mbed TLS 3.6.0 branch released 2024-03-28
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000200
201API changes
202 * Remove `tls13_` in mbedtls_ssl_tls13_conf_early_data() and
203 mbedtls_ssl_tls13_conf_max_early_data_size() API names. Early data
204 feature may not be TLS 1.3 specific in the future. Fixes #6909.
205
206Default behavior changes
207 * psa_import_key() now only accepts RSA keys in the PSA standard formats.
208 The undocumented ability to import other formats (PKCS#8, SubjectPublicKey,
209 PEM) accepted by the pkparse module has been removed. Applications that
210 need these formats can call mbedtls_pk_parse_{public,}key() followed by
211 mbedtls_pk_import_into_psa().
212
213Requirement changes
214 * Drop support for Visual Studio 2013 and 2015, and Arm Compiler 5.
215
216New deprecations
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000217 * Rename the MBEDTLS_SHA256_USE_A64_CRYPTO_xxx config options to
218 MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_xxx. The old names may still
219 be used, but are deprecated.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000220 * In the PSA API, domain parameters are no longer used for anything.
221 They are deprecated and will be removed in a future version of the
222 library.
223 * mbedtls_ecp_write_key() is deprecated in favor of
224 mbedtls_ecp_write_key_ext().
225
226Removals
227 * In the PSA API, the experimental way to encode the public exponent of
228 an RSA key as a domain parameter is no longer supported. Use
229 psa_generate_key_ext() instead.
230 * Temporary function mbedtls_pk_wrap_as_opaque() is removed. To mimic the
231 same behavior mbedtls_pk_get_psa_attributes() and
232 mbedtls_pk_import_into_psa() can be used to import a PK key into PSA,
233 while mbedtls_pk_setup_opaque() can be used to wrap a PSA key into a opaque
234 PK context.
235
236Features
237 * Added an example program showing how to hash with the PSA API.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000238 * Support Armv8-A Crypto Extension acceleration for SHA-256
239 when compiling for Thumb (T32) or 32-bit Arm (A32).
240 * AES-NI is now supported in Windows builds with clang and clang-cl.
241 Resolves #8372.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000242 * Add new mbedtls_x509_csr_parse_der_with_ext_cb() routine which allows
243 parsing unsupported certificate extensions via user provided callback.
244 * Enable the new option MBEDTLS_BLOCK_CIPHER_NO_DECRYPT to omit
245 the decryption direction of block ciphers (AES, ARIA, Camellia).
246 This affects both the low-level modules and the high-level APIs
247 (the cipher and PSA interfaces). This option is incompatible with modes
248 that use the decryption direction (ECB in PSA, CBC, XTS, KW) and with DES.
249 * Support use of Armv8-A Cryptographic Extensions for hardware acclerated
250 AES when compiling for Thumb (T32) or 32-bit Arm (A32).
251 * If a cipher or AEAD mechanism has a PSA driver, you can now build the
252 library without the corresponding built-in implementation. Generally
253 speaking that requires both the key type and algorithm to be accelerated
254 or they'll both be built in. However, for CCM and GCM the built-in
255 implementation is able to take advantage of a driver that only
256 accelerates the key type (that is, the block cipher primitive). See
257 docs/driver-only-builds.md for full details and current limitations.
258 * The CTR_DRBG module will now use AES from a PSA driver if MBEDTLS_AES_C is
259 disabled. This requires PSA_WANT_ALG_ECB_NO_PADDING in addition to
260 MBEDTLS_PSA_CRYPTO_C and PSA_WANT_KEY_TYPE_AES.
261 * Fewer modules depend on MBEDTLS_CIPHER_C, making it possible to save code
262 size by disabling it in more circumstances. In particular, the CCM and
263 GCM modules no longer depend on MBEDTLS_CIPHER_C. Also,
264 MBEDTLS_PSA_CRYPTO can now be enabled without MBEDTLS_CIPHER_C if all
265 unauthenticated (non-AEAD) ciphers are disabled, or if they're all
266 fully provided by drivers. See docs/driver-only-builds.md for full
267 details and current limitations; in particular, NIST_KW and PKCS5/PKCS12
268 decryption still unconditionally depend on MBEDTLS_CIPHER_C.
269 * Add support for record size limit extension as defined by RFC 8449
270 and configured with MBEDTLS_SSL_RECORD_SIZE_LIMIT.
271 Application data sent and received will be fragmented according to
272 Record size limits negotiated during handshake.
273 * Improve performance of AES-GCM, AES-CTR and CTR-DRBG when
274 hardware accelerated AES is not present (around 13-23% on 64-bit Arm).
275 * Add functions mbedtls_ecc_group_to_psa() and mbedtls_ecc_group_from_psa()
276 to convert between Mbed TLS and PSA curve identifiers.
277 * Add utility functions to manipulate mbedtls_ecp_keypair objects, filling
278 gaps made by making its fields private: mbedtls_ecp_set_public_key(),
279 mbedtls_ecp_write_public_key(), mbedtls_ecp_keypair_calc_public(),
280 mbedtls_ecp_keypair_get_group_id(). Fixes #5017, #5441, #8367, #8652.
281 * Add functions mbedtls_md_psa_alg_from_type() and
282 mbedtls_md_type_from_psa_alg() to convert between mbedtls_md_type_t and
283 psa_algorithm_t.
284 * Add partial platform support for z/OS.
285 * Improve performance for gcc (versions older than 9.3.0) and IAR.
286 * Add functions mbedtls_ecdsa_raw_to_der() and mbedtls_ecdsa_der_to_raw() to
287 convert ECDSA signatures between raw and DER (ASN.1) formats.
288 * Add support for using AES-CBC 128, 192, and 256 bit schemes
289 with PKCS#5 PBES2. Keys encrypted this way can now be parsed by PK parse.
290 * The new function mbedtls_rsa_get_bitlen() returns the length of the modulus
291 in bits, i.e. the key size for an RSA key.
292 * Add pc files for pkg-config, e.g.:
293 pkg-config --cflags --libs (mbedtls|mbedcrypto|mbedx509)
294 * Add getter (mbedtls_ssl_session_get_ticket_creation_time()) to access
295 `mbedtls_ssl_session.ticket_creation_time`.
296 * The new functions mbedtls_pk_get_psa_attributes() and
297 mbedtls_pk_import_into_psa() provide a uniform way to create a PSA
298 key from a PK key.
299 * The benchmark program now reports times for both ephemeral and static
300 ECDH in all ECDH configurations.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000301 * Add support for 8-bit GCM tables for Shoup's algorithm to speedup GCM
302 operations when hardware accelerated AES is not present. Improves
303 performance by around 30% on 64-bit Intel; 125% on Armv7-M.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000304 * The new function psa_generate_key_ext() allows generating an RSA
305 key pair with a custom public exponent.
306 * The new function mbedtls_ecp_write_key_ext() is similar to
307 mbedtls_ecp_write_key(), but can be used without separately calculating
308 the output length.
309 * Add new accessor to expose the private group id member of
310 `mbedtls_ecdh_context` structure.
311 * Add new accessor to expose the `MBEDTLS_PRIVATE(ca_istrue)` member of
312 `mbedtls_x509_crt` structure. This requires setting
313 the MBEDTLS_X509_EXT_BASIC_CONSTRAINTS bit in the certificate's
314 ext_types field.
315 * mbedtls_psa_get_random() is always available as soon as
316 MBEDTLS_PSA_CRYPTO_CLIENT is enabled at build time and psa_crypto_init() is
317 called at runtime. This together with MBEDTLS_PSA_RANDOM_STATE can be
318 used as random number generator function (f_rng) and context (p_rng) in
319 legacy functions.
320 * The new functions mbedtls_pk_copy_from_psa() and
321 mbedtls_pk_copy_public_from_psa() provide ways to set up a PK context
322 with the same content as a PSA key.
323 * Add new accessors to expose the private session-id,
324 session-id length, and ciphersuite-id members of
325 `mbedtls_ssl_session` structure.
326 Add new accessor to expose the ciphersuite-id of
327 `mbedtls_ssl_ciphersuite_t` structure.Design ref: #8529
328 * Mbed TLS now supports the writing and reading of TLS 1.3 early data (see
329 docs/tls13-early-data.md). The support enablement is controlled at build
330 time by the MBEDTLS_SSL_EARLY_DATA configuration option and at runtime by
331 the mbedtls_ssl_conf_early_data() API (by default disabled in both cases).
332 * Add protection for multithreaded access to the PSA keystore and protection
333 for multithreaded access to the the PSA global state, including
334 concurrently calling psa_crypto_init() when MBEDTLS_THREADING_C and
335 MBEDTLS_THREADING_PTHREAD are defined. See
336 docs/architecture/psa-thread-safety/psa-thread-safety.md for more details.
337 Resolves issues #3263 and #7945.
338
339Security
340 * Fix a stack buffer overread (less than 256 bytes) when parsing a TLS 1.3
341 ClientHello in a TLS 1.3 server supporting some PSK key exchange mode. A
342 malicious client could cause information disclosure or a denial of service.
Ronald Cron68613a42024-05-02 15:36:16 +0200343 Fixes CVE-2024-30166.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000344 * Passing buffers that are stored in untrusted memory as arguments
345 to PSA functions is now secure by default.
346 The PSA core now protects against modification of inputs or exposure
347 of intermediate outputs during operations. This is currently implemented
348 by copying buffers.
349 This feature increases code size and memory usage. If buffers passed to
350 PSA functions are owned exclusively by the PSA core for the duration of
351 the function call (i.e. no buffer parameters are in shared memory),
352 copying may be disabled by setting MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS.
353 Note that setting this option will cause input-output buffer overlap to
354 be only partially supported (#3266).
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000355 Fixes CVE-2024-28960.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000356 * Restore the maximum TLS version to be negotiated to the configured one
357 when an SSL context is reset with the mbedtls_ssl_session_reset() API.
358 An attacker was able to prevent an Mbed TLS server from establishing any
359 TLS 1.3 connection potentially resulting in a Denial of Service or forced
360 version downgrade from TLS 1.3 to TLS 1.2. Fixes #8654 reported by hey3e.
361 Fixes CVE-2024-28755.
362 * When negotiating TLS version on server side, do not fall back to the
363 TLS 1.2 implementation of the protocol if it is disabled.
364 - If the TLS 1.2 implementation was disabled at build time, a TLS 1.2
365 client could put the TLS 1.3-only server in an infinite loop processing
366 a TLS 1.2 ClientHello, resulting in a denial of service. Reported by
367 Matthias Mucha and Thomas Blattmann, SICK AG.
368 - If the TLS 1.2 implementation was disabled at runtime, a TLS 1.2 client
369 was able to successfully establish a TLS 1.2 connection with the server.
370 Reported by alluettiv on GitHub.
371 Fixes CVE-2024-28836.
372
373Bugfix
374 * Fix the build with CMake when Everest or P256-m is enabled through
375 a user configuration file or the compiler command line. Fixes #8165.
376 * Fix compilation error in C++ programs when MBEDTLS_ASN1_PARSE_C is
377 disabled.
378 * Fix possible NULL dereference issue in X509 cert_req program if an entry
379 in the san parameter is not separated by a colon.
380 * Fix possible NULL dereference issue in X509 cert_write program if an entry
381 in the san parameter is not separated by a colon.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000382 * Fix an inconsistency between implementations and usages of `__cpuid`,
383 which mainly causes failures when building Windows target using
384 mingw or clang. Fixes #8334 & #8332.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000385 * Fix build failure in conda-forge. Fixes #8422.
386 * Fix parsing of CSRs with critical extensions.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000387 * Switch to milliseconds as the unit for ticket creation and reception time
388 instead of seconds. That avoids rounding errors when computing the age of
389 tickets compared to peer using a millisecond clock (observed with GnuTLS).
390 Fixes #6623.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000391 * Fix TLS server accepting TLS 1.2 handshake while TLS 1.2
392 is disabled at runtime. Fixes #8593.
393 * Remove accidental introduction of RSA signature algorithms
394 in TLS Suite B Profile. Fixes #8221.
395 * Fix unsupported PSA asymmetric encryption and decryption
396 (psa_asymmetric_[en|de]crypt) with opaque keys.
397 Resolves #8461.
398 * On Linux on ARMv8, fix a build error with SHA-256 and SHA-512
399 acceleration detection when the libc headers do not define the
400 corresponding constant. Reported by valord577.
401 * Correct initial capacities for key derivation algorithms:TLS12_PRF,
402 TLS12_PSK_TO_MS, PBKDF2-HMAC, PBKDF2-CMAC
403 * Fix mbedtls_pk_get_bitlen() for RSA keys whose size is not a
404 multiple of 8. Fixes #868.
405 * Avoid segmentation fault caused by releasing not initialized
406 entropy resource in gen_key example. Fixes #8809.
407 * mbedtls_pem_read_buffer() now performs a check on the padding data of
408 decrypted keys and it rejects invalid ones.
409 * Fix mbedtls_pk_sign(), mbedtls_pk_verify(), mbedtls_pk_decrypt() and
410 mbedtls_pk_encrypt() on non-opaque RSA keys to honor the padding mode in
411 the RSA context. Before, if MBEDTLS_USE_PSA_CRYPTO was enabled and the
412 RSA context was configured for PKCS#1 v2.1 (PSS/OAEP), the sign/verify
413 functions performed a PKCS#1 v1.5 signature instead and the
414 encrypt/decrypt functions returned an error. Fixes #8824.
415 * Fix missing bitflags in SSL session serialization headers. Their absence
416 allowed SSL sessions saved in one configuration to be loaded in a
417 different, incompatible configuration.
418 * In TLS 1.3 clients, fix an interoperability problem due to the client
419 generating a new random after a HelloRetryRequest. Fixes #8669.
420 * Fix the restoration of the ALPN when loading serialized connection with
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000421 the mbedtls_ssl_context_load() API.
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000422 * Fix NULL pointer dereference in mbedtls_pk_verify_ext() when called using
423 an opaque RSA context and specifying MBEDTLS_PK_RSASSA_PSS as key type.
424 * Fix RSA opaque keys always using PKCS1 v1.5 algorithms instead of the
425 primary algorithm of the wrapped PSA key.
426 * Fully support arbitrary overlap between inputs and outputs of PSA
427 functions. Note that overlap is still only partially supported when
428 MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS is set (#3266).
429
430Changes
431 * Use heap memory to allocate DER encoded public/private key.
432 This reduces stack usage significantly for writing a public/private
433 key to a PEM string.
Minos Galanakis8d94aec2024-03-22 16:00:18 +0000434 * PSA_WANT_ALG_CCM and PSA_WANT_ALG_CCM_STAR_NO_TAG are no more synonyms and
435 they are now treated separately. This means that they should be
436 individually enabled in order to enable respective support; also the
437 corresponding MBEDTLS_PSA_ACCEL symbol should be defined in case
438 acceleration is required.
439 * Moved declaration of functions mbedtls_ecc_group_to_psa and
440 mbedtls_ecc_group_of_psa from psa/crypto_extra.h to mbedtls/psa_util.h
Minos Galanakis2c1daef2024-03-21 15:46:39 +0000441 * mbedtls_pk_sign_ext() is now always available, not just when
442 PSA (MBEDTLS_PSA_CRYPTO_C) is enabled.
443 * Extended PSA Crypto configurations options for FFDH by making it possible
444 to select only some of the parameters / groups, with the macros
445 PSA_WANT_DH_RFC7919_XXXX. You now need to defined the corresponding macro
446 for each size you want to support. Also, if you have an FFDH accelerator,
447 you'll need to define the appropriate MBEDTLS_PSA_ACCEL macros to signal
448 support for these domain parameters.
449 * RSA support in PSA no longer auto-enables the pkparse and pkwrite modules,
450 saving code size when those are not otherwise enabled.
451 * mbedtls_mpi_exp_mod and code that uses it, notably RSA and DHM operations,
452 have changed their speed/memory compromise as part of a proactive security
453 improvement. The new default value of MBEDTLS_MPI_WINDOW_SIZE roughly
454 preserves the current speed, at the expense of increasing memory
455 consumption.
456 * Rename directory containing Visual Studio files from visualc/VS2013 to
457 visualc/VS2017.
458 * The TLS 1.3 protocol is now enabled in the default configuration.
459
Dave Rodgman6ba41692024-01-22 15:40:12 +0000460= Mbed TLS 3.5.2 branch released 2024-01-26
461
462Security
463 * Fix a timing side channel in private key RSA operations. This side channel
464 could be sufficient for an attacker to recover the plaintext. A local
465 attacker or a remote attacker who is close to the victim on the network
466 might have precise enough timing measurements to exploit this. It requires
467 the attacker to send a large number of messages for decryption. For
468 details, see "Everlasting ROBOT: the Marvin Attack", Hubert Kario. Reported
469 by Hubert Kario, Red Hat.
470 * Fix a failure to validate input when writing x509 extensions lengths which
471 could result in an integer overflow, causing a zero-length buffer to be
472 allocated to hold the extension. The extension would then be copied into
473 the buffer, causing a heap buffer overflow.
474
Dave Rodgman0a403d42023-11-03 12:28:08 +0000475= Mbed TLS 3.5.1 branch released 2023-11-06
476
477Changes
478 * Mbed TLS is now released under a dual Apache-2.0 OR GPL-2.0-or-later
479 license. Users may choose which license they take the code under.
480
Dave Rodgman76049152023-11-07 12:33:17 +0000481Bugfix
482 * Fix accidental omission of MBEDTLS_TARGET_PREFIX in 3rdparty modules
483 in CMake.
484
Minos Galanakis974388f2023-10-03 22:07:22 +0100485= Mbed TLS 3.5.0 branch released 2023-10-05
Minos Galanakis80a81562023-10-03 22:03:50 +0100486
487API changes
488 * Mbed TLS 3.4 introduced support for omitting the built-in implementation
489 of ECDSA and/or EC J-PAKE when those are provided by a driver. However,
Dave Rodgmanc0e1f3e2023-11-03 11:08:05 +0000490 there was a flaw in the logic checking if the built-in implementation, in
491 that it failed to check if all the relevant curves were supported by the
Minos Galanakis80a81562023-10-03 22:03:50 +0100492 accelerator. As a result, it was possible to declare no curves as
493 accelerated and still have the built-in implementation compiled out.
494 Starting with this release, it is necessary to declare which curves are
495 accelerated (using MBEDTLS_PSA_ACCEL_ECC_xxx macros), or they will be
496 considered not accelerated, and the built-in implementation of the curves
497 and any algorithm possible using them will be included in the build.
498 * Add new millisecond time type `mbedtls_ms_time_t` and `mbedtls_ms_time()`
499 function, needed for TLS 1.3 ticket lifetimes. Alternative implementations
500 can be created using an ALT interface.
501
502Requirement changes
503 * Officially require Python 3.8 now that earlier versions are out of support.
504 * Minimum required Windows version is now Windows Vista, or
505 Windows Server 2008.
506
507New deprecations
508 * PSA_WANT_KEY_TYPE_xxx_KEY_PAIR and
509 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR, where xxx is either ECC or RSA,
510 are now being deprecated in favor of PSA_WANT_KEY_TYPE_xxx_KEY_PAIR_yyy and
511 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR_yyy. Here yyy can be: BASIC,
512 IMPORT, EXPORT, GENERATE, DERIVE. The goal is to have a finer detail about
513 the capabilities of the PSA side for either key.
514 * MBEDTLS_CIPHER_BLKSIZE_MAX is deprecated in favor of
515 MBEDTLS_MAX_BLOCK_LENGTH (if you intended what the name suggests:
516 maximum size of any supported block cipher) or the new name
517 MBEDTLS_CMAC_MAX_BLOCK_SIZE (if you intended the actual semantics:
518 maximum size of a block cipher supported by the CMAC module).
519 * mbedtls_pkcs5_pbes2() and mbedtls_pkcs12_pbe() functions are now
520 deprecated in favor of mbedtls_pkcs5_pbes2_ext() and
521 mbedtls_pkcs12_pbe_ext() as they offer more security by checking
522 for overflow of the output buffer and reporting the actual length
523 of the output.
524
525Features
526 * All modules that use hashes or HMAC can now take advantage of PSA Crypto
527 drivers when MBEDTLS_PSA_CRYPTO_C is enabled and psa_crypto_init() has
528 been called. Previously (in 3.3), this was restricted to a few modules,
529 and only in builds where MBEDTLS_MD_C was disabled; in particular the
530 entropy module was not covered which meant an external RNG had to be
531 provided - these limitations are lifted in this version. A new set of
532 feature macros, MBEDTLS_MD_CAN_xxx, has been introduced that can be used
533 to check for availability of hash algorithms, regardless of whether
534 they're provided by a built-in implementation, a driver or both. See
535 docs/driver-only-builds.md.
536 * When a PSA driver for ECDH is present, it is now possible to disable
537 MBEDTLS_ECDH_C in the build in order to save code size. For TLS 1.2
538 key exchanges based on ECDH(E) to work, this requires
539 MBEDTLS_USE_PSA_CRYPTO. Restartable/interruptible ECDHE operations in
540 TLS 1.2 (ECDHE-ECDSA key exchange) are not supported in those builds yet,
541 as PSA does not have an API for restartable ECDH yet.
542 * When all of ECDH, ECDSA and EC J-PAKE are either disabled or provided by
543 a driver, it is possible to disable MBEDTLS_ECP_C (and MBEDTLS_BIGNUM_C
544 if not required by another module) and still get support for ECC keys and
545 algorithms in PSA, with some limitations. See docs/driver-only-builds.txt
546 for details.
547 * Add parsing of directoryName subtype for subjectAltName extension in
548 x509 certificates.
549 * Add support for server-side TLS version negotiation. If both TLS 1.2 and
550 TLS 1.3 protocols are enabled, the TLS server now selects TLS 1.2 or
551 TLS 1.3 depending on the capabilities and preferences of TLS clients.
552 Fixes #6867.
553 * X.509 hostname verification now supports IPAddress Subject Alternate Names.
554 * Add support for reading and writing X25519 and X448
555 public and private keys in RFC 8410 format using the existing PK APIs.
556 * When parsing X.509 certificates, support the extensions
557 SignatureKeyIdentifier and AuthorityKeyIdentifier.
558 * Don't include the PSA dispatch functions for PAKEs (psa_pake_setup() etc)
559 if no PAKE algorithms are requested
560 * Add support for the FFDH algorithm and DH key types in PSA, with
561 parameters from RFC 7919. This includes a built-in implementation based
562 on MBEDTLS_BIGNUM_C, and a driver dispatch layer enabling alternative
563 implementations of FFDH through the driver entry points.
564 * It is now possible to generate certificates with SubjectAltNames.
565 Currently supported subtypes: DnsName, UniformResourceIdentifier,
566 IP address, OtherName, and DirectoryName, as defined in RFC 5280.
567 See mbedtls_x509write_crt_set_subject_alternative_name for
568 more information.
569 * X.509 hostname verification now partially supports URI Subject Alternate
570 Names. Only exact matching, without any normalization procedures
571 described in 7.4 of RFC5280, will result in a positive URI verification.
572 * Add function mbedtls_oid_from_numeric_string() to parse an OID from a
573 string to a DER-encoded mbedtls_asn1_buf.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100574 * Add SHA-3 family hash functions.
Minos Galanakis80a81562023-10-03 22:03:50 +0100575 * Add support to restrict AES to 128-bit keys in order to save code size.
576 A new configuration option, MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH, can be
577 used to enable this feature.
578 * AES performance improvements. Uplift varies by platform,
579 toolchain, optimisation flags and mode.
580 Aarch64, gcc -Os and CCM, GCM and XTS benefit the most.
581 On Aarch64, uplift is typically around 20 - 110%.
582 When compiling with gcc -Os on Aarch64, AES-XTS improves
583 by 4.5x.
584 * Add support for PBKDF2-HMAC through the PSA API.
585 * New symbols PSA_WANT_KEY_TYPE_xxx_KEY_PAIR_yyy and
586 MBEDTLS_PSA_ACCEL_KEY_TYPE_xxx_KEY_PAIR_yyy (where xxx is either ECC, RSA
587 or DH) were introduced in order to have finer accuracy in defining the
588 PSA capabilities for each key. These capabilities, named yyy above, can be
589 any of: BASIC, IMPORT, EXPORT, GENERATE, DERIVE.
590 - DERIVE is only available for ECC keys, not for RSA or DH ones.
591 - implementations are free to enable more than what it was strictly
592 requested. For example BASIC internally enables IMPORT and EXPORT
593 (useful for testing purposes), but this might change in the future.
594 * Add support for FFDH key exchange in TLS 1.3.
595 This is automatically enabled as soon as PSA_WANT_ALG_FFDH
596 and the ephemeral or psk-ephemeral key exchange mode are enabled.
597 By default, all groups are offered; the list of groups can be
598 configured using the existing API function mbedtls_ssl_conf_groups().
599 * Improve mbedtls_x509_time performance and reduce memory use.
600 * Reduce syscalls to time() during certificate verification.
601 * Allow MBEDTLS_CONFIG_FILE and MBEDTLS_USER_CONFIG_FILE to be set by
602 setting the CMake variable of the same name at configuration time.
603 * Add getter (mbedtls_ssl_cache_get_timeout()) to access
604 `mbedtls_ssl_cache_context.timeout`.
605 * Add getter (mbedtls_ssl_get_hostname()) to access
606 `mbedtls_ssl_context.hostname`.
607 * Add getter (mbedtls_ssl_conf_get_endpoint()) to access
608 `mbedtls_ssl_config.endpoint`.
609 * Support for "opaque" (PSA-held) ECC keys in the PK module has been
610 extended: it is now possible to use mbedtls_pk_write_key_der(),
611 mbedtls_pk_write_key_pem(), mbedtls_pk_check_pair(), and
612 mbedtls_pk_verify() with opaque ECC keys (provided the PSA attributes
613 allow it).
614 * The documentation of mbedtls_ecp_group now describes the optimized
615 representation of A for some curves. Fixes #8045.
616 * Add a possibility to generate CSR's with RCF822 and directoryName subtype
617 of subjectAltName extension in x509 certificates.
618 * Add support for PBKDF2-CMAC through the PSA API.
619 * New configuration option MBEDTLS_AES_USE_HARDWARE_ONLY introduced. When
620 using CPU-accelerated AES (e.g., Arm Crypto Extensions), this option
621 disables the plain C implementation and the run-time detection for the
622 CPU feature, which reduces code size and avoids the vulnerability of the
623 plain C implementation.
624 * Accept arbitrary AttributeType and AttributeValue in certificate
625 Distinguished Names using RFC 4514 syntax.
626 * Applications using ECC over secp256r1 through the PSA API can use a
627 new implementation with a much smaller footprint, but some minor
628 usage restrictions. See the documentation of the new configuration
629 option MBEDTLS_PSA_P256M_DRIVER_ENABLED for details.
630
631Security
632 * Fix a case where potentially sensitive information held in memory would not
633 be completely zeroized during TLS 1.2 handshake, in both server and client
634 configurations.
635 * In configurations with ARIA or Camellia but not AES, the value of
636 MBEDTLS_CIPHER_BLKSIZE_MAX was 8, rather than 16 as the name might
637 suggest. This did not affect any library code, because this macro was
638 only used in relation with CMAC which does not support these ciphers.
639 This may affect application code that uses this macro.
640 * Developers using mbedtls_pkcs5_pbes2() or mbedtls_pkcs12_pbe() should
641 review the size of the output buffer passed to this function, and note
642 that the output after decryption may include CBC padding. Consider moving
643 to the new functions mbedtls_pkcs5_pbes2_ext() or mbedtls_pkcs12_pbe_ext()
644 which checks for overflow of the output buffer and reports the actual
645 length of the output.
646 * Improve padding calculations in CBC decryption, NIST key unwrapping and
647 RSA OAEP decryption. With the previous implementation, some compilers
648 (notably recent versions of Clang and IAR) could produce non-constant
649 time code, which could allow a padding oracle attack if the attacker
650 has access to precise timing measurements.
651 * Updates to constant-time C code so that compilers are less likely to use
652 conditional instructions, which can have an observable difference in
653 timing. (Clang has been seen to do this.) Also introduce assembly
654 implementations for 32- and 64-bit Arm and for x86 and x86-64, which are
655 guaranteed not to use conditional instructions.
656 * Fix definition of MBEDTLS_MD_MAX_BLOCK_SIZE, which was too
657 small when MBEDTLS_SHA384_C was defined and MBEDTLS_SHA512_C was
658 undefined. Mbed TLS itself was unaffected by this, but user code
659 which used MBEDTLS_MD_MAX_BLOCK_SIZE could be affected. The only
660 release containing this bug was Mbed TLS 3.4.0.
661 * Fix a buffer overread when parsing short TLS application data records in
662 null-cipher cipher suites. Credit to OSS-Fuzz.
663 * Fix a remotely exploitable heap buffer overflow in TLS handshake parsing.
664 In TLS 1.3, all configurations are affected except PSK-only ones, and
665 both clients and servers are affected.
666 In TLS 1.2, the affected configurations are those with
667 MBEDTLS_USE_PSA_CRYPTO and ECDH enabled but DHM and RSA disabled,
668 and only servers are affected, not clients.
669 Credit to OSS-Fuzz.
670
671Bugfix
672 * Fix proper sizing for PSA_EXPORT_[KEY_PAIR/PUBLIC_KEY]_MAX_SIZE and
673 PSA_SIGNATURE_MAX_SIZE buffers when at least one accelerated EC is bigger
674 than all built-in ones and RSA is disabled.
675 Resolves #6622.
676 * Add missing md.h includes to some of the external programs from
677 the programs directory. Without this, even though the configuration
678 was sufficient for a particular program to work, it would only print
679 a message that one of the required defines is missing.
680 * Fix declaration of mbedtls_ecdsa_sign_det_restartable() function
681 in the ecdsa.h header file. There was a build warning when the
682 configuration macro MBEDTLS_ECDSA_SIGN_ALT was defined.
683 Resolves #7407.
684 * Fix an error when MBEDTLS_ECDSA_SIGN_ALT is defined but not
685 MBEDTLS_ECDSA_VERIFY_ALT, causing ecdsa verify to fail. Fixes #7498.
686 * Fix missing PSA initialization in sample programs when
687 MBEDTLS_USE_PSA_CRYPTO is enabled.
688 * Fix the J-PAKE driver interface for user and peer to accept any values
689 (previously accepted values were limited to "client" or "server").
690 * Fix clang and armclang compilation error when targeting certain Arm
691 M-class CPUs (Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M23,
692 SecurCore SC000). Fixes #1077.
693 * Fix "unterminated '#pragma clang attribute push'" in sha256/sha512.c when
694 built with MBEDTLS_SHAxxx_USE_A64_CRYPTO_IF_PRESENT but don't have a
695 way to detect the crypto extensions required. A warning is still issued.
696 * Fixed an issue that caused compile errors when using CMake and the IAR
697 toolchain.
698 * Fix very high stack usage in SSL debug code. Reported by Maximilian
699 Gerhardt in #7804.
700 * Fix a compilation failure in the constant_time module when
701 building for arm64_32 (e.g., for watchos). Reported by Paulo
702 Coutinho in #7787.
703 * Fix crypt_and_hash decryption fail when used with a stream cipher
704 mode of operation due to the input not being multiple of block size.
705 Resolves #7417.
706 * Fix a bug in which mbedtls_x509_string_to_names() would return success
707 when given a invalid name string if it did not contain '=' or ','.
708 * Fix compilation warnings in aes.c, which prevented the
709 example TF-M configuration in configs/ from building cleanly:
710 tfm_mbedcrypto_config_profile_medium.h with
711 crypto_config_profile_medium.h.
712 * In TLS 1.3, fix handshake failure when a client in its ClientHello
713 proposes an handshake based on PSK only key exchange mode or at least
714 one of the key exchange modes using ephemeral keys to a server that
715 supports only the PSK key exchange mode.
716 * Fix CCM* with no tag being not supported in a build with CCM as the only
717 symmetric encryption algorithm and the PSA configuration enabled.
718 * Fix the build with MBEDTLS_PSA_INJECT_ENTROPY. Fixes #7516.
719 * Fix a compilation error on some platforms when including mbedtls/ssl.h
720 with all TLS support disabled. Fixes #6628.
721 * Fix x509 certificate generation to conform to RFC 5480 / RFC 5758 when
722 using ECC key. The certificate was rejected by some crypto frameworks.
723 Fixes #2924.
724 * Fix a potential corruption of the passed-in IV when mbedtls_aes_crypt_cbc()
725 is called with zero length and padlock is not enabled.
726 * Fix compile failure due to empty enum in cipher_wrap.c, when building
727 with a very minimal configuration. Fixes #7625.
728 * Fix some cases where mbedtls_mpi_mod_exp, RSA key construction or ECDSA
729 signature can silently return an incorrect result in low memory conditions.
730 * Don't try to include MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE when
731 MBEDTLS_PSA_CRYPTO_CONFIG is disabled.
732 * Fix IAR compiler warnings.
733 * Fix an issue when parsing an otherName subject alternative name into a
734 mbedtls_x509_san_other_name struct. The type-id of the otherName was not
735 copied to the struct. This meant that the struct had incomplete
736 information about the otherName SAN and contained uninitialized memory.
737 * Fix the detection of HardwareModuleName otherName SANs. These were being
738 detected by comparing the wrong field and the check was erroneously
739 inverted.
740 * Fix a build error in some configurations with MBEDTLS_PSA_CRYPTO_CONFIG
741 enabled, where some low-level modules required by requested PSA crypto
742 features were not getting automatically enabled. Fixes #7420.
743 * Fix undefined symbols in some builds using TLS 1.3 with a custom
744 configuration file.
745 * Fix log level for the got supported group message. Fixes #6765
746 * Functions in the ssl_cache module now return a negative MBEDTLS_ERR_xxx
747 error code on failure. Before, they returned 1 to indicate failure in
748 some cases involving a missing entry or a full cache.
749 * mbedtls_pk_parse_key() now rejects trailing garbage in encrypted keys.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100750 * Fix the build with CMake when Everest or P256-m is enabled through
751 a user configuration file or the compiler command line. Fixes #8165.
Minos Galanakis80a81562023-10-03 22:03:50 +0100752
753Changes
754 * Enable Arm / Thumb bignum assembly for most Arm platforms when
755 compiling with gcc, clang or armclang and -O0.
756 * Enforce minimum RSA key size when generating a key
757 to avoid accidental misuse.
758 * Use heap memory to allocate DER encoded RSA private key.
759 This reduces stack usage significantly for RSA signature
760 operations when MBEDTLS_PSA_CRYPTO_C is defined.
761 * Update Windows code to use BCryptGenRandom and wcslen, and
762 ensure that conversions between size_t, ULONG, and int are
763 always done safely. Original contribution by Kevin Kane #635, #730
764 followed by Simon Butcher #1453.
Dave Rodgman5d323bf2023-10-04 18:46:47 +0100765 * Users integrating their own PSA drivers should be aware that
Minos Galanakis80a81562023-10-03 22:03:50 +0100766 the file library/psa_crypto_driver_wrappers.c has been renamed
767 to psa_crypto_driver_wrappers_no_static.c.
768 * When using CBC with the cipher module, the requirement to call
769 mbedtls_cipher_set_padding_mode() is now enforced. Previously, omitting
770 this call accidentally applied a default padding mode chosen at compile
771 time.
772
Gilles Peskine4a415fd2023-08-02 12:51:44 +0200773= Mbed TLS 3.4.1 branch released 2023-08-04
Gilles Peskine82c159f2023-08-02 12:51:01 +0200774
775Bugfix
776 * Fix builds on Windows with clang
777
778Changes
779 * Update test data to avoid failures of unit tests after 2023-08-07.
780
Paul Elliottdbe435c2023-03-23 10:43:15 +0000781= Mbed TLS 3.4.0 branch released 2023-03-28
782
783Default behavior changes
784 * The default priority order of TLS 1.3 cipher suites has been modified to
785 follow the same rules as the TLS 1.2 cipher suites (see
786 ssl_ciphersuites.c). The preferred cipher suite is now
787 TLS_CHACHA20_POLY1305_SHA256.
788
789New deprecations
790 * mbedtls_x509write_crt_set_serial() is now being deprecated in favor of
791 mbedtls_x509write_crt_set_serial_raw(). The goal here is to remove any
792 direct dependency of X509 on BIGNUM_C.
793 * PSA to mbedtls error translation is now unified in psa_util.h,
794 deprecating mbedtls_md_error_from_psa. Each file that performs error
795 translation should define its own version of PSA_TO_MBEDTLS_ERR,
796 optionally providing file-specific error pairs. Please see psa_util.h for
797 more details.
798
799Features
800 * Added partial support for parsing the PKCS #7 Cryptographic Message
801 Syntax, as defined in RFC 2315. Currently, support is limited to the
802 following:
803 - Only the signed-data content type, version 1 is supported.
804 - Only DER encoding is supported.
805 - Only a single digest algorithm per message is supported.
806 - Certificates must be in X.509 format. A message must have either 0
807 or 1 certificates.
808 - There is no support for certificate revocation lists.
809 - The authenticated and unauthenticated attribute fields of SignerInfo
810 must be empty.
811 Many thanks to Daniel Axtens, Nayna Jain, and Nick Child from IBM for
812 contributing this feature, and to Demi-Marie Obenour for contributing
813 various improvements, tests and bug fixes.
814 * General performance improvements by accessing multiple bytes at a time.
815 Fixes #1666.
816 * Improvements to use of unaligned and byte-swapped memory, reducing code
817 size and improving performance (depending on compiler and target
818 architecture).
819 * Add support for reading points in compressed format
820 (MBEDTLS_ECP_PF_COMPRESSED) with mbedtls_ecp_point_read_binary()
821 (and callers) for Short Weierstrass curves with prime p where p = 3 mod 4
822 (all mbedtls MBEDTLS_ECP_DP_SECP* and MBEDTLS_ECP_DP_BP* curves
823 except MBEDTLS_ECP_DP_SECP224R1 and MBEDTLS_ECP_DP_SECP224K1)
824 * SHA224_C/SHA384_C are now independent from SHA384_C/SHA512_C respectively.
825 This helps in saving code size when some of the above hashes are not
826 required.
827 * Add parsing of V3 extensions (key usage, Netscape cert-type,
828 Subject Alternative Names) in x509 Certificate Sign Requests.
829 * Use HOSTCC (if it is set) when compiling C code during generation of the
830 configuration-independent files. This allows them to be generated when
831 CC is set for cross compilation.
832 * Add parsing of uniformResourceIdentifier subtype for subjectAltName
833 extension in x509 certificates.
834 * Add an interruptible version of sign and verify hash to the PSA interface,
835 backed by internal library support for ECDSA signing and verification.
836 * Add parsing of rfc822Name subtype for subjectAltName
837 extension in x509 certificates.
838 * The configuration macros MBEDTLS_PSA_CRYPTO_PLATFORM_FILE and
839 MBEDTLS_PSA_CRYPTO_STRUCT_FILE specify alternative locations for
840 the headers "psa/crypto_platform.h" and "psa/crypto_struct.h".
841 * When a PSA driver for ECDSA is present, it is now possible to disable
842 MBEDTLS_ECDSA_C in the build in order to save code size. For PK, X.509
843 and TLS to fully work, this requires MBEDTLS_USE_PSA_CRYPTO to be enabled.
844 Restartable/interruptible ECDSA operations in PK, X.509 and TLS are not
845 supported in those builds yet, as driver support for interruptible ECDSA
846 operations is not present yet.
847 * Add a driver dispatch layer for EC J-PAKE, enabling alternative
848 implementations of EC J-PAKE through the driver entry points.
849 * Add new API mbedtls_ssl_cache_remove for cache entry removal by
850 its session id.
851 * Add support to include the SubjectAltName extension to a CSR.
852 * Add support for AES with the Armv8-A Cryptographic Extension on
853 64-bit Arm. A new configuration option, MBEDTLS_AESCE_C, can
854 be used to enable this feature. Run-time detection is supported
855 under Linux only.
856 * When a PSA driver for EC J-PAKE is present, it is now possible to disable
857 MBEDTLS_ECJPAKE_C in the build in order to save code size. For the
858 corresponding TLS 1.2 key exchange to work, MBEDTLS_USE_PSA_CRYPTO needs
859 to be enabled.
860 * Add functions mbedtls_rsa_get_padding_mode() and mbedtls_rsa_get_md_alg()
861 to read non-public fields for padding mode and hash id from
862 an mbedtls_rsa_context, as requested in #6917.
863 * AES-NI is now supported with Visual Studio.
864 * AES-NI is now supported in 32-bit builds, or when MBEDTLS_HAVE_ASM
865 is disabled, when compiling with GCC or Clang or a compatible compiler
866 for a target CPU that supports the requisite instructions (for example
867 gcc -m32 -msse2 -maes -mpclmul). (Generic x86 builds with GCC-like
868 compilers still require MBEDTLS_HAVE_ASM and a 64-bit target.)
869 * It is now possible to use a PSA-held (opaque) password with the TLS 1.2
870 ECJPAKE key exchange, using the new API function
871 mbedtls_ssl_set_hs_ecjpake_password_opaque().
872
873Security
874 * Use platform-provided secure zeroization function where possible, such as
875 explicit_bzero().
876 * Zeroize SSL cache entries when they are freed.
877 * Fix a potential heap buffer overread in TLS 1.3 client-side when
878 MBEDTLS_DEBUG_C is enabled. This may result in an application crash.
879 * Add support for AES with the Armv8-A Cryptographic Extension on 64-bit
880 Arm, so that these systems are no longer vulnerable to timing side-channel
881 attacks. This is configured by MBEDTLS_AESCE_C, which is on by default.
882 Reported by Demi Marie Obenour.
883 * MBEDTLS_AESNI_C, which is enabled by default, was silently ignored on
884 builds that couldn't compile the GCC-style assembly implementation
885 (most notably builds with Visual Studio), leaving them vulnerable to
886 timing side-channel attacks. There is now an intrinsics-based AES-NI
887 implementation as a fallback for when the assembly one cannot be used.
888
889Bugfix
890 * Fix possible integer overflow in mbedtls_timing_hardclock(), which
891 could cause a crash in programs/test/benchmark.
892 * Fix IAR compiler warnings. Fixes #6924.
893 * Fix a bug in the build where directory names containing spaces were
894 causing generate_errors.pl to error out resulting in a build failure.
895 Fixes issue #6879.
896 * In TLS 1.3, when using a ticket for session resumption, tweak its age
897 calculation on the client side. It prevents a server with more accurate
898 ticket timestamps (typically timestamps in milliseconds) compared to the
899 Mbed TLS ticket timestamps (in seconds) to compute a ticket age smaller
900 than the age computed and transmitted by the client and thus potentially
901 reject the ticket. Fix #6623.
902 * Fix compile error where MBEDTLS_RSA_C and MBEDTLS_X509_CRT_WRITE_C are
903 defined, but MBEDTLS_PK_RSA_ALT_SUPPORT is not defined. Fixes #3174.
904 * List PSA_WANT_ALG_CCM_STAR_NO_TAG in psa/crypto_config.h so that it can
905 be toggled with config.py.
906 * The key derivation algorithm PSA_ALG_TLS12_ECJPAKE_TO_PMS cannot be
907 used on a shared secret from a key agreement since its input must be
908 an ECC public key. Reject this properly.
909 * mbedtls_x509write_crt_set_serial() now explicitly rejects serial numbers
910 whose binary representation is longer than 20 bytes. This was already
911 forbidden by the standard (RFC5280 - section 4.1.2.2) and now it's being
912 enforced also at code level.
913 * Fix potential undefined behavior in mbedtls_mpi_sub_abs(). Reported by
914 Pascal Cuoq using TrustInSoft Analyzer in #6701; observed independently by
915 Aaron Ucko under Valgrind.
916 * Fix behavior of certain sample programs which could, when run with no
917 arguments, access uninitialized memory in some cases. Fixes #6700 (which
918 was found by TrustInSoft Analyzer during REDOCS'22) and #1120.
919 * Fix parsing of X.509 SubjectAlternativeName extension. Previously,
920 malformed alternative name components were not caught during initial
921 certificate parsing, but only on subsequent calls to
922 mbedtls_x509_parse_subject_alt_name(). Fixes #2838.
923 * Make the fields of mbedtls_pk_rsassa_pss_options public. This makes it
924 possible to verify RSA PSS signatures with the pk module, which was
925 inadvertently broken since Mbed TLS 3.0.
926 * Fix bug in conversion from OID to string in
927 mbedtls_oid_get_numeric_string(). OIDs such as 2.40.0.25 are now printed
928 correctly.
929 * Reject OIDs with overlong-encoded subidentifiers when converting
930 them to a string.
931 * Reject OIDs with subidentifier values exceeding UINT_MAX. Such
932 subidentifiers can be valid, but Mbed TLS cannot currently handle them.
933 * Reject OIDs that have unterminated subidentifiers, or (equivalently)
934 have the most-significant bit set in their last byte.
935 * Silence warnings from clang -Wdocumentation about empty \retval
936 descriptions, which started appearing with Clang 15. Fixes #6960.
937 * Fix the handling of renegotiation attempts in TLS 1.3. They are now
938 systematically rejected.
939 * Fix an unused-variable warning in TLS 1.3-only builds if
940 MBEDTLS_SSL_RENEGOTIATION was enabled. Fixes #6200.
941 * Fix undefined behavior in mbedtls_ssl_read() and mbedtls_ssl_write() if
942 len argument is 0 and buffer is NULL.
943 * Allow setting user and peer identifiers for EC J-PAKE operation
944 instead of role in PAKE PSA Crypto API as described in the specification.
945 This is a partial fix that allows only "client" and "server" identifiers.
946 * Fix a compilation error when PSA Crypto is built with support for
947 TLS12_PRF but not TLS12_PSK_TO_MS. Reported by joerchan in #7125.
948 * In the TLS 1.3 server, select the preferred client cipher suite, not the
949 least preferred. The selection error was introduced in Mbed TLS 3.3.0.
950 * Fix TLS 1.3 session resumption when the established pre-shared key is
951 384 bits long. That is the length of pre-shared keys created under a
952 session where the cipher suite is TLS_AES_256_GCM_SHA384.
953 * Fix an issue when compiling with MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
954 enabled, which required specifying compiler flags enabling SHA3 Crypto
955 Extensions, where some compilers would emit EOR3 instructions in other
956 modules, which would then fail if run on a CPU without the SHA3
957 extensions. Fixes #5758.
958
959Changes
960 * Install the .cmake files into CMAKE_INSTALL_LIBDIR/cmake/MbedTLS,
961 typically /usr/lib/cmake/MbedTLS.
962 * Mixed-endian systems are explicitly not supported any more.
963 * When MBEDTLS_USE_PSA_CRYPTO and MBEDTLS_ECDSA_DETERMINISTIC are both
964 defined, mbedtls_pk_sign() now use deterministic ECDSA for ECDSA
965 signatures. This aligns the behaviour with MBEDTLS_USE_PSA_CRYPTO to
966 the behaviour without it, where deterministic ECDSA was already used.
967 * Visual Studio: Rename the directory containing Visual Studio files from
968 visualc/VS2010 to visualc/VS2013 as we do not support building with versions
969 older than 2013. Update the solution file to specify VS2013 as a minimum.
970 * programs/x509/cert_write:
971 - now it accepts the serial number in 2 different formats: decimal and
972 hex. They cannot be used simultaneously
973 - "serial" is used for the decimal format and it's limted in size to
974 unsigned long long int
975 - "serial_hex" is used for the hex format; max length here is
976 MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN*2
977 * The C code follows a new coding style. This is transparent for users but
978 affects contributors and maintainers of local patches. For more
979 information, see
980 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/rewrite-branch-for-coding-style/
981 * Changed the default MBEDTLS_ECP_WINDOW_SIZE from 6 to 2.
982 As tested in issue 6790, the correlation between this define and
983 RSA decryption performance has changed lately due to security fixes.
984 To fix the performance degradation when using default values the
985 window was reduced from 6 to 2, a value that gives the best or close
986 to best results when tested on Cortex-M4 and Intel i7.
987 * When enabling MBEDTLS_SHA256_USE_A64_CRYPTO_* or
988 MBEDTLS_SHA512_USE_A64_CRYPTO_*, it is no longer necessary to specify
989 compiler target flags on the command line; the library now sets target
990 options within the appropriate modules.
991
Dave Rodgman69591e92022-12-08 14:59:54 +0000992= Mbed TLS 3.3.0 branch released 2022-12-14
993
Dave Rodgman69591e92022-12-08 14:59:54 +0000994Default behavior changes
995 * Previously the macro MBEDTLS_SSL_DTLS_CONNECTION_ID implemented version 05
996 of the IETF draft, and was marked experimental and disabled by default.
997 It is now no longer experimental, and implements the final version from
998 RFC 9146, which is not interoperable with the draft-05 version.
999 If you need to communicate with peers that use earlier versions of
1000 Mbed TLS, then you need to define MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT
1001 to 1, but then you won't be able to communicate with peers that use the
1002 standard (non-draft) version.
1003 If you need to interoperate with both classes of peers with the
1004 same build of Mbed TLS, please let us know about your situation on the
1005 mailing list or GitHub.
1006
1007Requirement changes
1008 * When building with PSA drivers using generate_driver_wrappers.py, or
1009 when building the library from the development branch rather than
1010 from a release, the Python module jsonschema is now necessary, in
1011 addition to jinja2. The official list of required Python modules is
1012 maintained in scripts/basic.requirements.txt and may change again
1013 in the future.
1014
1015New deprecations
1016 * Deprecate mbedtls_asn1_free_named_data().
1017 Use mbedtls_asn1_free_named_data_list()
1018 or mbedtls_asn1_free_named_data_list_shallow().
1019
1020Features
1021 * Support rsa_pss_rsae_* signature algorithms in TLS 1.2.
1022 * make: enable building unversioned shared library, with e.g.:
1023 "SHARED=1 SOEXT_TLS=so SOEXT_X509=so SOEXT_CRYPTO=so make lib"
1024 resulting in library names like "libmbedtls.so" rather than
1025 "libmbedcrypto.so.11".
1026 * Expose the EC J-PAKE functionality through the Draft PSA PAKE Crypto API.
1027 Only the ECC primitive with secp256r1 curve and SHA-256 hash algorithm
1028 are supported in this implementation.
1029 * Some modules can now use PSA drivers for hashes, including with no
1030 built-in implementation present, but only in some configurations.
1031 - RSA OAEP and PSS (PKCS#1 v2.1), PKCS5, PKCS12 and EC J-PAKE now use
1032 hashes from PSA when (and only when) MBEDTLS_MD_C is disabled.
1033 - PEM parsing of encrypted files now uses MD-5 from PSA when (and only
1034 when) MBEDTLS_MD5_C is disabled.
1035 See the documentation of the corresponding macros in mbedtls_config.h for
1036 details.
1037 Note that some modules are not able to use hashes from PSA yet, including
1038 the entropy module. As a consequence, for now the only way to build with
1039 all hashes only provided by drivers (no built-in hash) is to use
1040 MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG.
1041 * When MBEDTLS_USE_PSA_CRYPTO is enabled, X.509, TLS 1.2 and TLS 1.3 now
1042 properly negotiate/accept hashes based on their availability in PSA.
1043 As a consequence, they now work in configurations where the built-in
1044 implementations of (some) hashes are excluded and those hashes are only
1045 provided by PSA drivers. (See previous entry for limitation on RSA-PSS
1046 though: that module only use hashes from PSA when MBEDTLS_MD_C is off).
1047 * Add support for opaque keys as the private keys associated to certificates
1048 for authentication in TLS 1.3.
1049 * Add the LMS post-quantum-safe stateful-hash asymmetric signature scheme.
1050 Signature verification is production-ready, but generation is for testing
1051 purposes only. This currently only supports one parameter set
1052 (LMS_SHA256_M32_H10), meaning that each private key can be used to sign
1053 1024 messages. As such, it is not intended for use in TLS, but instead
1054 for verification of assets transmitted over an insecure channel,
1055 particularly firmware images.
1056 * Add the LM-OTS post-quantum-safe one-time signature scheme, which is
1057 required for LMS. This can be used independently, but each key can only
1058 be used to sign one message so is impractical for most circumstances.
1059 * Mbed TLS now supports TLS 1.3 key establishment via pre-shared keys.
1060 The pre-shared keys can be provisioned externally or via the ticket
1061 mechanism (session resumption).
1062 The ticket mechanism is supported when the configuration option
1063 MBEDTLS_SSL_SESSION_TICKETS is enabled.
1064 New options MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_xxx_ENABLED
1065 control the support for the three possible TLS 1.3 key exchange modes.
1066 * cert_write: support for setting extended key usage attributes. A
1067 corresponding new public API call has been added in the library,
1068 mbedtls_x509write_crt_set_ext_key_usage().
1069 * cert_write: support for writing certificate files in either PEM
1070 or DER format.
1071 * The PSA driver wrapper generator generate_driver_wrappers.py now
1072 supports a subset of the driver description language, including
1073 the following entry points: import_key, export_key, export_public_key,
1074 get_builtin_key, copy_key.
1075 * The new functions mbedtls_asn1_free_named_data_list() and
1076 mbedtls_asn1_free_named_data_list_shallow() simplify the management
1077 of memory in named data lists in X.509 structures.
1078 * The TLS 1.2 EC J-PAKE key exchange can now use the PSA Crypto API.
1079 Additional PSA key slots will be allocated in the process of such key
1080 exchange for builds that enable MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED and
1081 MBEDTLS_USE_PSA_CRYPTO.
1082 * Add support for DTLS Connection ID as defined by RFC 9146, controlled by
1083 MBEDTLS_SSL_DTLS_CONNECTION_ID (enabled by default) and configured with
1084 mbedtls_ssl_set_cid().
1085 * Add a driver dispatch layer for raw key agreement, enabling alternative
1086 implementations of raw key agreement through the key_agreement driver
1087 entry point. This entry point is specified in the proposed PSA driver
1088 interface, but had not yet been implemented.
Dave Rodgman552e1072022-12-14 17:01:51 +00001089 * Add an ad-hoc key derivation function handling EC J-PAKE to PMS
1090 calculation that can be used to derive the session secret in TLS 1.2,
1091 as described in draft-cragie-tls-ecjpake-01. This can be achieved by
1092 using PSA_ALG_TLS12_ECJPAKE_TO_PMS as the key derivation algorithm.
Dave Rodgman69591e92022-12-08 14:59:54 +00001093
1094Security
1095 * Fix potential heap buffer overread and overwrite in DTLS if
1096 MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and
1097 MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001098 * Fix an issue where an adversary with access to precise enough information
1099 about memory accesses (typically, an untrusted operating system attacking
1100 a secure enclave) could recover an RSA private key after observing the
1101 victim performing a single private-key operation if the window size used
1102 for the exponentiation was 3 or smaller. Found and reported by Zili KOU,
Dave Rodgman69591e92022-12-08 14:59:54 +00001103 Wenjian HE, Sharad Sinha, and Wei ZHANG. See "Cache Side-channel Attacks
1104 and Defenses of the Sliding Window Algorithm in TEEs" - Design, Automation
1105 and Test in Europe 2023.
1106
1107Bugfix
1108 * Refactor mbedtls_aes_context to support shallow-copying. Fixes #2147.
1109 * Fix an issue with in-tree CMake builds in releases with GEN_FILES
1110 turned off: if a shipped file was missing from the working directory,
1111 it could be turned into a symbolic link to itself.
1112 * Fix a long-standing build failure when building x86 PIC code with old
1113 gcc (4.x). The code will be slower, but will compile. We do however
1114 recommend upgrading to a more recent compiler instead. Fixes #1910.
1115 * Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
1116 Contributed by Kazuyuki Kimura to fix #2020.
1117 * Use double quotes to include private header file psa_crypto_cipher.h.
1118 Fixes 'file not found with <angled> include' error
1119 when building with Xcode.
1120 * Fix handling of broken symlinks when loading certificates using
1121 mbedtls_x509_crt_parse_path(). Instead of returning an error as soon as a
1122 broken link is encountered, skip the broken link and continue parsing
1123 other certificate files. Contributed by Eduardo Silva in #2602.
1124 * Fix an interoperability failure between an Mbed TLS client with both
1125 TLS 1.2 and TLS 1.3 support, and a TLS 1.2 server that supports
1126 rsa_pss_rsae_* signature algorithms. This failed because Mbed TLS
1127 advertised support for PSS in both TLS 1.2 and 1.3, but only
1128 actually supported PSS in TLS 1.3.
1129 * Fix a compilation error when using CMake with an IAR toolchain.
1130 Fixes #5964.
1131 * Fix a build error due to a missing prototype warning when
1132 MBEDTLS_DEPRECATED_REMOVED is enabled.
1133 * Fix mbedtls_ctr_drbg_free() on an initialized but unseeded context. When
1134 MBEDTLS_AES_ALT is enabled, it could call mbedtls_aes_free() on an
1135 uninitialized context.
1136 * Fix a build issue on Windows using CMake where the source and build
1137 directories could not be on different drives. Fixes #5751.
1138 * Fix bugs and missing dependencies when building and testing
1139 configurations with only one encryption type enabled in TLS 1.2.
1140 * Provide the missing definition of mbedtls_setbuf() in some configurations
1141 with MBEDTLS_PLATFORM_C disabled. Fixes #6118, #6196.
1142 * Fix compilation errors when trying to build with
1143 PSA drivers for AEAD (GCM, CCM, Chacha20-Poly1305).
1144 * Fix memory leak in ssl_parse_certificate_request() caused by
1145 mbedtls_x509_get_name() not freeing allocated objects in case of error.
1146 Change mbedtls_x509_get_name() to clean up allocated objects on error.
1147 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
1148 MBEDTLS_USE_PSA_CRYPTO or MBEDTLS_PK_WRITE_C. Fixes #6408.
1149 * Fix build failure with MBEDTLS_RSA_C and MBEDTLS_PSA_CRYPTO_C but not
1150 MBEDTLS_PK_PARSE_C. Fixes #6409.
1151 * Fix ECDSA verification, where it was not always validating the
1152 public key. This bug meant that it was possible to verify a
1153 signature with an invalid public key, in some cases. Reported by
1154 Guido Vranken using Cryptofuzz in #4420.
1155 * Fix a possible null pointer dereference if a memory allocation fails
1156 in TLS PRF code. Reported by Michael Madsen in #6516.
1157 * Fix TLS 1.3 session resumption. Fixes #6488.
1158 * Add a configuration check to exclude optional client authentication
1159 in TLS 1.3 (where it is forbidden).
1160 * Fix a bug in which mbedtls_x509_crt_info() would produce non-printable
1161 bytes when parsing certificates containing a binary RFC 4108
1162 HardwareModuleName as a Subject Alternative Name extension. Hardware
1163 serial numbers are now rendered in hex format. Fixes #6262.
1164 * Fix bug in error reporting in dh_genprime.c where upon failure,
1165 the error code returned by mbedtls_mpi_write_file() is overwritten
1166 and therefore not printed.
1167 * In the bignum module, operations of the form (-A) - (+A) or (-A) - (-A)
1168 with A > 0 created an unintended representation of the value 0 which was
1169 not processed correctly by some bignum operations. Fix this. This had no
1170 consequence on cryptography code, but might affect applications that call
1171 bignum directly and use negative numbers.
1172 * Fix a bug whereby the list of signature algorithms sent as part of
1173 the TLS 1.2 server certificate request would get corrupted, meaning the
1174 first algorithm would not get sent and an entry consisting of two random
1175 bytes would be sent instead. Found by Serban Bejan and Dudek Sebastian.
1176 * Fix undefined behavior (typically harmless in practice) of
1177 mbedtls_mpi_add_mpi(), mbedtls_mpi_add_abs() and mbedtls_mpi_add_int()
1178 when both operands are 0 and the left operand is represented with 0 limbs.
1179 * Fix undefined behavior (typically harmless in practice) when some bignum
1180 functions receive the most negative value of mbedtls_mpi_sint. Credit
1181 to OSS-Fuzz. Fixes #6597.
1182 * Fix undefined behavior (typically harmless in practice) in PSA ECB
1183 encryption and decryption.
1184 * Move some SSL-specific code out of libmbedcrypto where it had been placed
1185 accidentally.
1186 * Fix a build error when compiling the bignum module for some Arm platforms.
1187 Fixes #6089, #6124, #6217.
1188
1189Changes
1190 * Add the ability to query PSA_WANT_xxx macros to query_compile_time_config.
1191 * Calling AEAD tag-specific functions for non-AEAD algorithms (which
1192 should not be done - they are documented for use only by AES-GCM and
1193 ChaCha20+Poly1305) now returns MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
1194 instead of success (0).
1195
Paul Elliott869298b2022-07-12 10:39:42 +01001196= Mbed TLS 3.2.1 branch released 2022-07-12
1197
1198Bugfix
Paul Elliott4ecb1b52022-09-20 14:33:13 +01001199 * Re-add missing generated file library/psa_crypto_driver_wrappers.c
Paul Elliott869298b2022-07-12 10:39:42 +01001200
Paul Elliott2238eed2022-07-08 18:19:12 +01001201= Mbed TLS 3.2.0 branch released 2022-07-11
1202
1203Default behavior changes
1204 * mbedtls_cipher_set_iv will now fail with ChaCha20 and ChaCha20+Poly1305
1205 for IV lengths other than 12. The library was silently overwriting this
1206 length with 12, but did not inform the caller about it. Fixes #4301.
1207
1208Requirement changes
1209 * The library will no longer compile out of the box on a platform without
1210 setbuf(). If your platform does not have setbuf(), you can configure an
1211 alternative function by enabling MBEDTLS_PLATFORM_SETBUF_ALT or
1212 MBEDTLS_PLATFORM_SETBUF_MACRO.
1213
1214New deprecations
1215 * Deprecate mbedtls_ssl_conf_max_version() and
1216 mbedtls_ssl_conf_min_version() in favor of
1217 mbedtls_ssl_conf_max_tls_version() and
1218 mbedtls_ssl_conf_min_tls_version().
1219 * Deprecate mbedtls_cipher_setup_psa(). Use psa_aead_xxx() or
1220 psa_cipher_xxx() directly instead.
1221 * Secure element drivers enabled by MBEDTLS_PSA_CRYPTO_SE_C are deprecated.
1222 This was intended as an experimental feature, but had not been explicitly
1223 documented as such. Use opaque drivers with the interface enabled by
1224 MBEDTLS_PSA_CRYPTO_DRIVERS instead.
1225 * Deprecate mbedtls_ssl_conf_sig_hashes() in favor of the more generic
1226 mbedtls_ssl_conf_sig_algs(). Signature algorithms for the TLS 1.2 and
1227 TLS 1.3 handshake should now be configured with
1228 mbedtls_ssl_conf_sig_algs().
1229
1230Features
1231 * Add accessor to obtain ciphersuite id from ssl context.
1232 * Add accessors to get members from ciphersuite info.
1233 * Add mbedtls_ssl_ticket_rotate() for external ticket rotation.
1234 * Add accessor to get the raw buffer pointer from a PEM context.
1235 * The structures mbedtls_ssl_config and mbedtls_ssl_context now store
1236 a piece of user data which is reserved for the application. The user
1237 data can be either a pointer or an integer.
1238 * Add an accessor function to get the configuration associated with
1239 an SSL context.
1240 * Add a function to access the protocol version from an SSL context in a
1241 form that's easy to compare. Fixes #5407.
1242 * Add function mbedtls_md_info_from_ctx() to recall the message digest
1243 information that was used to set up a message digest context.
1244 * Add ALPN support in TLS 1.3 clients.
1245 * Add server certificate selection callback near end of Client Hello.
1246 Register callback with mbedtls_ssl_conf_cert_cb().
1247 * Provide mechanism to reset handshake cert list by calling
1248 mbedtls_ssl_set_hs_own_cert() with NULL value for own_cert param.
1249 * Add accessor mbedtls_ssl_get_hs_sni() to retrieve SNI from within
1250 cert callback (mbedtls_ssl_conf_cert_cb()) during handshake.
1251 * The X.509 module now uses PSA hash acceleration if present.
1252 * Add support for psa crypto key derivation for elliptic curve
1253 keys. Fixes #3260.
1254 * Add function mbedtls_timing_get_final_delay() to access the private
1255 final delay field in an mbedtls_timing_delay_context, as requested in
1256 #5183.
1257 * Add mbedtls_pk_sign_ext() which allows generating RSA-PSS signatures when
1258 PSA Crypto is enabled.
1259 * Add function mbedtls_ecp_export() to export ECP key pair parameters.
1260 Fixes #4838.
1261 * Add function mbedtls_ssl_is_handshake_over() to enable querying if the SSL
1262 Handshake has completed or not, and thus whether to continue calling
1263 mbedtls_ssl_handshake_step(), requested in #4383.
1264 * Add the function mbedtls_ssl_get_own_cid() to access our own connection id
1265 within mbedtls_ssl_context, as requested in #5184.
1266 * Introduce mbedtls_ssl_hs_cb_t typedef for use with
1267 mbedtls_ssl_conf_cert_cb() and perhaps future callbacks
1268 during TLS handshake.
1269 * Add functions mbedtls_ssl_conf_max_tls_version() and
1270 mbedtls_ssl_conf_min_tls_version() that use a single value to specify
1271 the protocol version.
1272 * Extend the existing PSA_ALG_TLS12_PSK_TO_MS() algorithm to support
1273 mixed-PSK. Add an optional input PSA_KEY_DERIVATION_INPUT_OTHER_SECRET
1274 holding the other secret.
1275 * When MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you may list the PSA crypto
1276 feature requirements in the file named by the new macro
1277 MBEDTLS_PSA_CRYPTO_CONFIG_FILE instead of the default psa/crypto_config.h.
1278 Furthermore you may name an additional file to include after the main
1279 file with the macro MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE.
1280 * Add the function mbedtls_x509_crt_has_ext_type() to access the ext types
1281 field within mbedtls_x509_crt context, as requested in #5585.
1282 * Add HKDF-Expand and HKDF-Extract as separate algorithms in the PSA API.
1283 * Add support for the ARMv8 SHA-2 acceleration instructions when building
1284 for Aarch64.
1285 * Add support for authentication of TLS 1.3 clients by TLS 1.3 servers.
1286 * Add support for server HelloRetryRequest message. The TLS 1.3 client is
1287 now capable of negotiating another shared secret if the one sent in its
1288 first ClientHello was not suitable to the server.
1289 * Add support for client-side TLS version negotiation. If both TLS 1.2 and
1290 TLS 1.3 protocols are enabled in the build of Mbed TLS, the TLS client now
1291 negotiates TLS 1.3 or TLS 1.2 with TLS servers.
1292 * Enable building of Mbed TLS with TLS 1.3 protocol support but without TLS
1293 1.2 protocol support.
1294 * Mbed TLS provides an implementation of a TLS 1.3 server (ephemeral key
1295 establishment only). See docs/architecture/tls13-support.md for a
1296 description of the support. The MBEDTLS_SSL_PROTO_TLS1_3 and
1297 MBEDTLS_SSL_SRV_C configuration options control this.
1298 * Add accessors to configure DN hints for certificate request:
1299 mbedtls_ssl_conf_dn_hints() and mbedtls_ssl_set_hs_dn_hints()
1300 * The configuration option MBEDTLS_USE_PSA_CRYPTO, which previously
1301 affected only a limited subset of crypto operations in TLS, X.509 and PK,
1302 now causes most of them to be done using PSA Crypto; see
1303 docs/use-psa-crypto.md for the list of exceptions.
1304 * The function mbedtls_pk_setup_opaque() now supports RSA key pairs as well.
1305 Opaque keys can now be used everywhere a private key is expected in the
1306 TLS and X.509 modules.
1307 * Opaque pre-shared keys for TLS, provisioned with
1308 mbedtls_ssl_conf_psk_opaque() or mbedtls_ssl_set_hs_psk_opaque(), which
1309 previously only worked for "pure" PSK key exchange, now can also be used
1310 for the "mixed" PSK key exchanges as well: ECDHE-PSK, DHE-PSK, RSA-PSK.
1311 * cmake now detects if it is being built as a sub-project, and in that case
1312 disables the target export/installation and package configuration.
1313 * Make USE_PSA_CRYPTO compatible with KEY_ID_ENCODES_OWNER. Fixes #5259.
1314 * Add example programs cipher_aead_demo.c, md_hmac_demo.c, aead_demo.c
1315 and hmac_demo.c, which use PSA and the md/cipher interfaces side
1316 by side in order to illustrate how the operation is performed in PSA.
1317 Addresses #5208.
1318
1319Security
1320 * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
1321 module before freeing them. These buffers contain secret key material, and
1322 could thus potentially leak the key through freed heap.
1323 * Fix potential memory leak inside mbedtls_ssl_cache_set() with
1324 an invalid session id length.
1325 * Add the platform function mbedtls_setbuf() to allow buffering to be
1326 disabled on stdio files, to stop secrets loaded from said files being
1327 potentially left in memory after file operations. Reported by
1328 Glenn Strauss.
1329 * Fix a potential heap buffer overread in TLS 1.2 server-side when
1330 MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
1331 mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
1332 is selected. This may result in an application crash or potentially an
1333 information leak.
1334 * Fix a buffer overread in DTLS ClientHello parsing in servers with
1335 MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
1336 or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
1337 after the end of the SSL input buffer. The buffer overread only happens
1338 when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
1339 the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
1340 and possibly up to 571 bytes with a custom cookie check function.
1341 Reported by the Cybeats PSI Team.
1342 * Fix a buffer overread in TLS 1.3 Certificate parsing. An unauthenticated
1343 client or server could cause an MbedTLS server or client to overread up
1344 to 64 kBytes of data and potentially overread the input buffer by that
1345 amount minus the size of the input buffer. As overread data undergoes
1346 various checks, the likelihood of reaching the boundary of the input
1347 buffer is rather small but increases as its size
1348 MBEDTLS_SSL_IN_CONTENT_LEN decreases.
1349 * Fix check of certificate key usage in TLS 1.3. The usage of the public key
1350 provided by a client or server certificate for authentication was not
1351 checked properly when validating the certificate. This could cause a
1352 client or server to be able to authenticate itself through a certificate
1353 to an Mbed TLS TLS 1.3 server or client while it does not own a proper
1354 certificate to do so.
1355
1356Bugfix
1357 * Declare or use PSA_WANT_ALG_CCM_STAR_NO_TAG following the general
1358 pattern for PSA_WANT_xxx symbols. Previously you had to specify
1359 PSA_WANT_ALG_CCM for PSA_ALG_CCM_STAR_NO_TAG.
1360 * Fix a memory leak if mbedtls_ssl_config_defaults() is called twice.
1361 * Fixed swap of client and server random bytes when exporting them alongside
1362 TLS 1.3 handshake and application traffic secret.
1363 * Fix several bugs (warnings, compiler and linker errors, test failures)
1364 in reduced configurations when MBEDTLS_USE_PSA_CRYPTO is enabled.
1365 * Fix a bug in (D)TLS curve negotiation: when MBEDTLS_USE_PSA_CRYPTO was
1366 enabled and an ECDHE-ECDSA or ECDHE-RSA key exchange was used, the
1367 client would fail to check that the curve selected by the server for
1368 ECDHE was indeed one that was offered. As a result, the client would
1369 accept any curve that it supported, even if that curve was not allowed
1370 according to its configuration. Fixes #5291.
1371 * The TLS 1.3 implementation is now compatible with the
1372 MBEDTLS_USE_PSA_CRYPTO configuration option.
1373 * Fix unit tests that used 0 as the file UID. This failed on some
1374 implementations of PSA ITS. Fixes #3838.
1375 * Fix mbedtls_ssl_get_version() not reporting TLSv1.3. Fixes #5406.
1376 * Fix API violation in mbedtls_md_process() test by adding a call to
1377 mbedtls_md_starts(). Fixes #2227.
1378 * Fix compile errors when MBEDTLS_HAVE_TIME is not defined. Add tests
1379 to catch bad uses of time.h.
1380 * Fix a race condition in out-of-source builds with CMake when generated data
1381 files are already present. Fixes #5374.
1382 * Fix the library search path when building a shared library with CMake
1383 on Windows.
1384 * Fix bug in the alert sending function mbedtls_ssl_send_alert_message()
1385 potentially leading to corrupted alert messages being sent in case
1386 the function needs to be re-called after initially returning
1387 MBEDTLS_SSL_WANT_WRITE. Fixes #1916.
1388 * In configurations with MBEDTLS_SSL_DTLS_CONNECTION_ID enabled but not
1389 MBEDTLS_DEBUG_C, DTLS handshakes using CID would crash due to a null
1390 pointer dereference. Fix this. Fixes #3998.
1391 The fix was released, but not announced, in Mbed TLS 3.1.0.
1392 * Fix incorrect documentation of mbedtls_x509_crt_profile. The previous
1393 documentation stated that the `allowed_pks` field applies to signatures
1394 only, but in fact it does apply to the public key type of the end entity
1395 certificate, too. Fixes #1992.
1396 * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
1397 not NULL and val_len is zero.
1398 * Fix compilation error with mingw32. Fixed by Cameron Cawley in #4211.
1399 * Fix compilation error when using C++ Builder on Windows. Reported by
1400 Miroslav Mastny in #4015.
1401 * psa_raw_key_agreement() now returns PSA_ERROR_BUFFER_TOO_SMALL when
1402 applicable. Fixes #5735.
1403 * Fix a bug in the x25519 example program where the removal of
1404 MBEDTLS_ECDH_LEGACY_CONTEXT caused the program not to run. Fixes #4901 and
1405 #3191.
1406 * Fix a TLS 1.3 handshake failure when the peer Finished message has not
1407 been received yet when we first try to fetch it.
1408 * Encode X.509 dates before 1/1/2000 as UTCTime rather than
1409 GeneralizedTime. Fixes #5465.
1410 * Add mbedtls_x509_dn_get_next function to return the next relative DN in
1411 an X509 name, to allow walking the name list. Fixes #5431.
1412 * Fix order value of curve x448.
1413 * Fix string representation of DNs when outputting values containing commas
1414 and other special characters, conforming to RFC 1779. Fixes #769.
1415 * Silence a warning from GCC 12 in the selftest program. Fixes #5974.
1416 * Fix check_config.h to check that we have MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1417 when MBEDTLS_SSL_PROTO_TLS1_3 is specified, and make this and other
1418 dependencies explicit in the documentation. Fixes #5610.
1419 * Fix mbedtls_asn1_write_mpi() writing an incorrect encoding of 0.
1420 * Fix a TLS 1.3 handshake failure when the first attempt to send the client
1421 Finished message on the network cannot be satisfied. Fixes #5499.
1422 * Fix resource leaks in mbedtls_pk_parse_public_key() in low
1423 memory conditions.
1424 * Fix server connection identifier setting for outgoing encrypted records
1425 on DTLS 1.2 session resumption. After DTLS 1.2 session resumption with
1426 connection identifier, the Mbed TLS client now properly sends the server
1427 connection identifier in encrypted record headers. Fix #5872.
1428 * Fix a null pointer dereference when performing some operations on zero
1429 represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
1430 by 2, and mbedtls_mpi_write_string() in base 2).
1431 * Fix record sizes larger than 16384 being sometimes accepted despite being
1432 non-compliant. This could not lead to a buffer overflow. In particular,
1433 application data size was already checked correctly.
1434 * Fix MBEDTLS_SVC_KEY_ID_GET_KEY_ID() and MBEDTLS_SVC_KEY_ID_GET_OWNER_ID()
1435 which have been broken, resulting in compilation errors, since Mbed TLS
1436 3.0.
1437 * Ensure that TLS 1.2 ciphersuite/certificate and key selection takes into
1438 account not just the type of the key (RSA vs EC) but also what it can
1439 actually do. Resolves #5831.
1440 * Fix CMake windows host detection, especially when cross compiling.
1441 * Fix an error in make where the absence of a generated file caused
1442 make to break on a clean checkout. Fixes #5340.
1443 * Work around an MSVC ARM64 compiler bug causing incorrect behaviour
1444 in mbedtls_mpi_exp_mod(). Reported by Tautvydas Žilys in #5467.
Dave Rodgman2b52a2e2022-12-12 15:23:44 +00001445 * Removed the prompt to exit from all windows build programs, which was causing
Paul Elliott2238eed2022-07-08 18:19:12 +01001446 issues in CI/CD environments.
1447
1448Changes
1449 * The file library/psa_crypto_driver_wrappers.c is now generated
1450 from a template. In the future, the generation will support
1451 driver descriptions. For the time being, to customize this file,
1452 see docs/proposed/psa-driver-wrappers-codegen-migration-guide.md
1453 * Return PSA_ERROR_INVALID_ARGUMENT if the algorithm passed to one-shot
1454 AEAD functions is not an AEAD algorithm. This aligns them with the
1455 multipart functions, and the PSA Crypto API 1.1 specification.
1456 * In mbedtls_pk_parse_key(), if no password is provided, don't allocate a
1457 temporary variable on the heap. Suggested by Sergey Kanatov in #5304.
1458 * Assume source files are in UTF-8 when using MSVC with CMake.
1459 * Fix runtime library install location when building with CMake and MinGW.
1460 DLLs are now installed in the bin directory instead of lib.
1461 * cmake: Use GnuInstallDirs to customize install directories
1462 Replace custom LIB_INSTALL_DIR variable with standard CMAKE_INSTALL_LIBDIR
1463 variable. For backward compatibility, set CMAKE_INSTALL_LIBDIR if
1464 LIB_INSTALL_DIR is set.
1465 * Add a CMake option that enables static linking of the runtime library
1466 in Microsoft Visual C++ compiler. Contributed by Microplankton.
1467 * In CMake builds, add aliases for libraries so that the normal MbedTLS::*
1468 targets work when MbedTLS is built as a subdirectory. This allows the
1469 use of FetchContent, as requested in #5688.
Paul Bakker99ed6782011-01-05 14:48:42 +00001470
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001471= mbed TLS 3.1.0 branch released 2021-12-17
Ronald Cron831cf482021-12-15 09:02:38 +01001472
1473API changes
1474 * New error code for GCM: MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL.
1475 Alternative GCM implementations are expected to verify
1476 the length of the provided output buffers and to return the
1477 MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL in case the buffer length is too small.
1478 * You can configure groups for a TLS key exchange with the new function
1479 mbedtls_ssl_conf_groups(). It extends mbedtls_ssl_conf_curves().
1480 * Declare a number of structure fields as public: the fields of
1481 mbedtls_ecp_curve_info, the fields describing the result of ASN.1 and
1482 X.509 parsing, and finally the field fd of mbedtls_net_context on
1483 POSIX/Unix-like platforms.
1484
1485Requirement changes
1486 * Sign-magnitude and one's complement representations for signed integers are
1487 not supported. Two's complement is the only supported representation.
1488
1489New deprecations
1490 * Deprecate mbedtls_ssl_conf_curves() in favor of the more generic
1491 mbedtls_ssl_conf_groups().
1492
1493Removals
1494 * Remove the partial support for running unit tests via Greentea on Mbed OS,
1495 which had been unmaintained since 2018.
1496
1497Features
1498 * Enable support for Curve448 via the PSA API. Contributed by
1499 Archana Madhavan in #4626. Fixes #3399 and #4249.
1500 * The identifier of the CID TLS extension can be configured by defining
1501 MBEDTLS_TLS_EXT_CID at compile time.
1502 * Implement the PSA multipart AEAD interface, currently supporting
1503 ChaChaPoly and GCM.
1504 * Warn if errors from certain functions are ignored. This is currently
1505 supported on GCC-like compilers and on MSVC and can be configured through
1506 the macro MBEDTLS_CHECK_RETURN. The warnings are always enabled
1507 (where supported) for critical functions where ignoring the return
1508 value is almost always a bug. Enable the new configuration option
1509 MBEDTLS_CHECK_RETURN_WARNING to get warnings for other functions. This
1510 is currently implemented in the AES, DES and md modules, and will be
1511 extended to other modules in the future.
1512 * Add missing PSA macros declared by PSA Crypto API 1.0.0:
1513 PSA_ALG_IS_SIGN_HASH, PSA_ALG_NONE, PSA_HASH_BLOCK_LENGTH, PSA_KEY_ID_NULL.
1514 * Add support for CCM*-no-tag cipher to the PSA.
1515 Currently only 13-byte long IV's are supported.
1516 For decryption a minimum of 16-byte long input is expected.
1517 These restrictions may be subject to change.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001518 * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
Ronald Cron831cf482021-12-15 09:02:38 +01001519 * Add functions to get the IV and block size from cipher_info structs.
1520 * Add functions to check if a cipher supports variable IV or key size.
1521 * Add the internal implementation of and support for CCM to the PSA multipart
1522 AEAD interface.
1523 * Mbed TLS provides a minimum viable implementation of the TLS 1.3
1524 protocol. See docs/architecture/tls13-support.md for the definition of
1525 the TLS 1.3 Minimum Viable Product (MVP). The MBEDTLS_SSL_PROTO_TLS1_3
1526 configuration option controls the enablement of the support. The APIs
1527 mbedtls_ssl_conf_min_version() and mbedtls_ssl_conf_max_version() allow
1528 to select the 1.3 version of the protocol to establish a TLS connection.
1529 * Add PSA API definition for ARIA.
1530
1531Security
1532 * Zeroize several intermediate variables used to calculate the expected
1533 value when verifying a MAC or AEAD tag. This hardens the library in
1534 case the value leaks through a memory disclosure vulnerability. For
1535 example, a memory disclosure vulnerability could have allowed a
1536 man-in-the-middle to inject fake ciphertext into a DTLS connection.
1537 * In psa_aead_generate_nonce(), do not read back from the output buffer.
1538 This fixes a potential policy bypass or decryption oracle vulnerability
1539 if the output buffer is in memory that is shared with an untrusted
1540 application.
1541 * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
1542 from the output buffer. This fixes a potential policy bypass or decryption
1543 oracle vulnerability if the output buffer is in memory that is shared with
1544 an untrusted application.
1545 * Fix a double-free that happened after mbedtls_ssl_set_session() or
1546 mbedtls_ssl_get_session() failed with MBEDTLS_ERR_SSL_ALLOC_FAILED
1547 (out of memory). After that, calling mbedtls_ssl_session_free()
1548 and mbedtls_ssl_free() would cause an internal session buffer to
1549 be free()'d twice.
1550
1551Bugfix
1552 * Stop using reserved identifiers as local variables. Fixes #4630.
1553 * The GNU makefiles invoke python3 in preference to python except on Windows.
1554 The check was accidentally not performed when cross-compiling for Windows
1555 on Linux. Fix this. Fixes #4774.
1556 * Prevent divide by zero if either of PSA_CIPHER_ENCRYPT_OUTPUT_SIZE() or
1557 PSA_CIPHER_UPDATE_OUTPUT_SIZE() were called using an asymmetric key type.
1558 * Fix a parameter set but unused in psa_crypto_cipher.c. Fixes #4935.
1559 * Don't use the obsolete header path sys/fcntl.h in unit tests.
1560 These header files cause compilation errors in musl.
1561 Fixes #4969.
1562 * Fix missing constraints on x86_64 and aarch64 assembly code
1563 for bignum multiplication that broke some bignum operations with
1564 (at least) Clang 12.
1565 Fixes #4116, #4786, #4917, #4962.
1566 * Fix mbedtls_cipher_crypt: AES-ECB when MBEDTLS_USE_PSA_CRYPTO is enabled.
1567 * Failures of alternative implementations of AES or DES single-block
1568 functions enabled with MBEDTLS_AES_ENCRYPT_ALT, MBEDTLS_AES_DECRYPT_ALT,
1569 MBEDTLS_DES_CRYPT_ECB_ALT or MBEDTLS_DES3_CRYPT_ECB_ALT were ignored.
1570 This does not concern the implementation provided with Mbed TLS,
1571 where this function cannot fail, or full-module replacements with
1572 MBEDTLS_AES_ALT or MBEDTLS_DES_ALT. Reported by Armelle Duboc in #1092.
1573 * Some failures of HMAC operations were ignored. These failures could only
1574 happen with an alternative implementation of the underlying hash module.
1575 * Fix the error returned by psa_generate_key() for a public key. Fixes #4551.
1576 * Fix compile-time or run-time errors in PSA
1577 AEAD functions when ChachaPoly is disabled. Fixes #5065.
1578 * Remove PSA'a AEAD finish/verify output buffer limitation for GCM.
1579 The requirement of minimum 15 bytes for output buffer in
1580 psa_aead_finish() and psa_aead_verify() does not apply to the built-in
1581 implementation of GCM.
1582 * Move GCM's update output buffer length verification from PSA AEAD to
1583 the built-in implementation of the GCM.
1584 The requirement for output buffer size to be equal or greater then
1585 input buffer size is valid only for the built-in implementation of GCM.
1586 Alternative GCM implementations can process whole blocks only.
1587 * Fix the build of sample programs when neither MBEDTLS_ERROR_C nor
1588 MBEDTLS_ERROR_STRERROR_DUMMY is enabled.
1589 * Fix PSA_ALG_RSA_PSS verification accepting an arbitrary salt length.
1590 This algorithm now accepts only the same salt length for verification
1591 that it produces when signing, as documented. Use the new algorithm
1592 PSA_ALG_RSA_PSS_ANY_SALT to accept any salt length. Fixes #4946.
1593 * The existing predicate macro name PSA_ALG_IS_HASH_AND_SIGN is now reserved
1594 for algorithm values that fully encode the hashing step, as per the PSA
1595 Crypto API specification. This excludes PSA_ALG_RSA_PKCS1V15_SIGN_RAW and
1596 PSA_ALG_ECDSA_ANY. The new predicate macro PSA_ALG_IS_SIGN_HASH covers
1597 all algorithms that can be used with psa_{sign,verify}_hash(), including
1598 these two.
1599 * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
1600 not to list other shared libraries they need.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001601 * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
1602 exceeds 2^32. Fixes #4884.
Ronald Cron831cf482021-12-15 09:02:38 +01001603 * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
1604 version 11.
1605 * Fix the build when no SHA2 module is included. Fixes #4930.
1606 * Fix the build when only the bignum module is included. Fixes #4929.
1607 * Fix a potential invalid pointer dereference and infinite loop bugs in
1608 pkcs12 functions when the password is empty. Fix the documentation to
1609 better describe the inputs to these functions and their possible values.
1610 Fixes #5136.
1611 * The key usage flags PSA_KEY_USAGE_SIGN_MESSAGE now allows the MAC
1612 operations psa_mac_compute() and psa_mac_sign_setup().
1613 * The key usage flags PSA_KEY_USAGE_VERIFY_MESSAGE now allows the MAC
1614 operations psa_mac_verify() and psa_mac_verify_setup().
1615
1616Changes
1617 * Explicitly mark the fields mbedtls_ssl_session.exported and
1618 mbedtls_ssl_config.respect_cli_pref as private. This was an
1619 oversight during the run-up to the release of Mbed TLS 3.0.
1620 The fields were never intended to be public.
1621 * Implement multi-part CCM API.
1622 The multi-part functions: mbedtls_ccm_starts(), mbedtls_ccm_set_lengths(),
1623 mbedtls_ccm_update_ad(), mbedtls_ccm_update(), mbedtls_ccm_finish()
1624 were introduced in mbedTLS 3.0 release, however their implementation was
1625 postponed until now.
1626 Implemented functions support chunked data input for both CCM and CCM*
1627 algorithms.
1628 * Remove MBEDTLS_SSL_EXPORT_KEYS, making it always on and increasing the
1629 code size by about 80B on an M0 build. This option only gated an ability
1630 to set a callback, but was deemed unnecessary as it was yet another define
1631 to remember when writing tests, or test configurations. Fixes #4653.
1632 * Improve the performance of base64 constant-flow code. The result is still
1633 slower than the original non-constant-flow implementation, but much faster
1634 than the previous constant-flow implementation. Fixes #4814.
1635 * Ignore plaintext/ciphertext lengths for CCM*-no-tag operations.
1636 For CCM* encryption/decryption without authentication, input
1637 length will be ignored.
1638 * Indicate in the error returned if the nonce length used with
1639 ChaCha20-Poly1305 is invalid, and not just unsupported.
Ronald Cron1ffa6a52021-12-14 15:57:17 +01001640 * The mbedcrypto library includes a new source code module constant_time.c,
1641 containing various functions meant to resist timing side channel attacks.
1642 This module does not have a separate configuration option, and functions
1643 from this module will be included in the build as required. Currently
1644 most of the interface of this module is private and may change at any
1645 time.
1646 * The generated configuration-independent files are now automatically
1647 generated by the CMake build system on Unix-like systems. This is not
1648 yet supported when cross-compiling.
Ronald Cron831cf482021-12-15 09:02:38 +01001649
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001650= Mbed TLS 3.0.0 branch released 2021-07-07
Dave Rodgman10ba5532021-04-26 14:58:26 +01001651
1652API changes
1653 * Remove HAVEGE module.
1654 The design of HAVEGE makes it unsuitable for microcontrollers. Platforms
1655 with a more complex CPU usually have an operating system interface that
1656 provides better randomness. Instead of HAVEGE, declare OS or hardware RNG
1657 interfaces with mbedtls_entropy_add_source() and/or use an entropy seed
1658 file created securely during device provisioning. See
Dave Rodgmanb3196842022-10-12 16:47:08 +01001659 https://mbed-tls.readthedocs.io/en/latest/kb/how-to/add-entropy-sources-to-entropy-pool/ for
Dave Rodgman10ba5532021-04-26 14:58:26 +01001660 more information.
1661 * Add missing const attributes to API functions.
1662 * Remove helpers for the transition from Mbed TLS 1.3 to Mbed TLS 2.0: the
1663 header compat-1.3.h and the script rename.pl.
1664 * Remove certs module from the API.
1665 Transfer keys and certificates embedded in the library to the test
1666 component. This contributes to minimizing library API and discourages
1667 users from using unsafe keys in production.
1668 * Move alt helpers and definitions.
1669 Various helpers and definitions available for use in alt implementations
1670 have been moved out of the include/ directory and into the library/
1671 directory. The files concerned are ecp_internal.h and rsa_internal.h
Gilles Peskine6a2fb612021-05-24 22:25:04 +02001672 which have also been renamed to ecp_internal_alt.h and rsa_alt_helpers.h
Dave Rodgman10ba5532021-04-26 14:58:26 +01001673 respectively.
1674 * Move internal headers.
1675 Header files that were only meant for the library's internal use and
1676 were not meant to be used in application code have been moved out of
1677 the include/ directory. The headers concerned are bn_mul.h, aesni.h,
1678 padlock.h, entropy_poll.h and *_internal.h.
1679 * Drop support for parsing SSLv2 ClientHello
1680 (MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO).
1681 * Drop support for SSLv3 (MBEDTLS_SSL_PROTO_SSL3).
Dave Rodgman10ba5532021-04-26 14:58:26 +01001682 * Drop support for TLS record-level compression (MBEDTLS_ZLIB_SUPPORT).
1683 * Drop support for RC4 TLS ciphersuites.
1684 * Drop support for single-DES ciphersuites.
1685 * Drop support for MBEDTLS_SSL_HW_RECORD_ACCEL.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001686 * Update AEAD output size macros to bring them in line with the PSA Crypto
1687 API version 1.0 spec. This version of the spec parameterizes them on the
1688 key type used, as well as the key bit-size in the case of
1689 PSA_AEAD_TAG_LENGTH.
1690 * Add configuration option MBEDTLS_X509_REMOVE_INFO which
1691 removes the mbedtls_x509_*_info(), mbedtls_debug_print_crt()
1692 as well as other functions and constants only used by
1693 those functions. This reduces the code footprint by
1694 several kB.
1695 * Remove SSL error codes `MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED`
1696 and `MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH` which are never
1697 returned from the public SSL API.
1698 * Remove `MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE` and return
1699 `MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL` instead.
Dave Rodgman814b0992021-07-02 12:11:14 +01001700 * The output parameter of mbedtls_sha512_finish, mbedtls_sha512,
1701 mbedtls_sha256_finish and mbedtls_sha256 now has a pointer type
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001702 rather than array type. This removes spurious warnings in some compilers
1703 when outputting a SHA-384 or SHA-224 hash into a buffer of exactly
1704 the hash size.
1705 * Remove the MBEDTLS_TEST_NULL_ENTROPY config option. Fixes #4388.
1706 * The interface of the GCM module has changed to remove restrictions on
1707 how the input to multipart operations is broken down. mbedtls_gcm_finish()
Dave Rodgmaneaef0b72021-07-01 16:59:13 +01001708 now takes extra output parameters for the last partial output block.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001709 mbedtls_gcm_update() now takes extra parameters for the output length.
1710 The software implementation always produces the full output at each
1711 call to mbedtls_gcm_update(), but alternative implementations activated
1712 by MBEDTLS_GCM_ALT may delay partial blocks to the next call to
1713 mbedtls_gcm_update() or mbedtls_gcm_finish(). Furthermore, applications
1714 no longer pass the associated data to mbedtls_gcm_starts(), but to the
1715 new function mbedtls_gcm_update_ad().
1716 These changes are backward compatible for users of the cipher API.
1717 * Replace MBEDTLS_SHA512_NO_SHA384 config option with MBEDTLS_SHA384_C.
1718 This separates config option enabling the SHA384 algorithm from option
1719 enabling the SHA512 algorithm. Fixes #4034.
1720 * Introduce MBEDTLS_SHA224_C.
1721 This separates config option enabling the SHA224 algorithm from option
1722 enabling SHA256.
Dave Rodgman745e3582021-07-05 18:53:31 +01001723 * The getter and setter API of the SSL session cache (used for
1724 session-ID based session resumption) has changed to that of
1725 a key-value store with keys being session IDs and values
1726 being opaque instances of `mbedtls_ssl_session`.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001727 * Remove the mode parameter from RSA operation functions. Signature and
1728 decryption functions now always use the private key and verification and
1729 encryption use the public key. Verification functions also no longer have
1730 RNG parameters.
Dave Rodgman745e3582021-07-05 18:53:31 +01001731 * Modify semantics of `mbedtls_ssl_conf_[opaque_]psk()`:
1732 In Mbed TLS 2.X, the API prescribes that later calls overwrite
1733 the effect of earlier calls. In Mbed TLS 3.0, calling
1734 `mbedtls_ssl_conf_[opaque_]psk()` more than once will fail,
1735 leaving the PSK that was configured first intact.
1736 Support for more than one PSK may be added in 3.X.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001737 * The function mbedtls_x509write_csr_set_extension() has an extra parameter
1738 which allows to mark an extension as critical. Fixes #4055.
1739 * For multi-part AEAD operations with the cipher module, calling
1740 mbedtls_cipher_finish() is now mandatory. Previously the documentation
1741 was unclear on this point, and this function happened to never do
1742 anything with the currently implemented AEADs, so in practice it was
1743 possible to skip calling it, which is no longer supported.
1744 * The option MBEDTLS_ECP_FIXED_POINT_OPTIM use pre-computed comb tables
1745 instead of computing tables in runtime. Thus, this option now increase
1746 code size, and it does not increase RAM usage in runtime anymore.
1747 * Remove the SSL APIs mbedtls_ssl_get_input_max_frag_len() and
1748 mbedtls_ssl_get_output_max_frag_len(), and add a new API
1749 mbedtls_ssl_get_max_in_record_payload(), complementing the existing
1750 mbedtls_ssl_get_max_out_record_payload().
1751 Uses of mbedtls_ssl_get_input_max_frag_len() and
1752 mbedtls_ssl_get_input_max_frag_len() should be replaced by
1753 mbedtls_ssl_get_max_in_record_payload() and
1754 mbedtls_ssl_get_max_out_record_payload(), respectively.
1755 * mbedtls_rsa_init() now always selects the PKCS#1v1.5 encoding for an RSA
1756 key. To use an RSA key with PSS or OAEP, call mbedtls_rsa_set_padding()
1757 after initializing the context. mbedtls_rsa_set_padding() now returns an
1758 error if its parameters are invalid.
Dave Rodgman745e3582021-07-05 18:53:31 +01001759 * Replace MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE by a runtime
1760 configuration function mbedtls_ssl_conf_preference_order(). Fixes #4398.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001761 * Instead of accessing the len field of a DHM context, which is no longer
1762 supported, use the new function mbedtls_dhm_get_len() .
1763 * In modules that implement cryptographic hash functions, many functions
1764 mbedtls_xxx() now return int instead of void, and the corresponding
1765 function mbedtls_xxx_ret() which was identical except for returning int
1766 has been removed. This also concerns mbedtls_xxx_drbg_update(). See the
1767 migration guide for more information. Fixes #4212.
1768 * For all functions that take a random number generator (RNG) as a
1769 parameter, this parameter is now mandatory (that is, NULL is not an
1770 acceptable value). Functions which previously accepted NULL and now
1771 reject it are: the X.509 CRT and CSR writing functions; the PK and RSA
1772 sign and decrypt function; mbedtls_rsa_private(); the functions
1773 in DHM and ECDH that compute the shared secret; the scalar multiplication
1774 functions in ECP.
1775 * The following functions now require an RNG parameter:
1776 mbedtls_ecp_check_pub_priv(), mbedtls_pk_check_pair(),
1777 mbedtls_pk_parse_key(), mbedtls_pk_parse_keyfile().
1778 * mbedtls_ssl_conf_export_keys_ext_cb() and
1779 mbedtls_ssl_conf_export_keys_cb() have been removed and
1780 replaced by a new API mbedtls_ssl_set_export_keys_cb().
1781 Raw keys and IVs are no longer passed to the callback.
1782 Further, callbacks now receive an additional parameter
1783 indicating the type of secret that's being exported,
1784 paving the way for the larger number of secrets
1785 in TLS 1.3. Finally, the key export callback and
1786 context are now connection-specific.
1787 * Signature functions in the RSA and PK modules now require the hash
1788 length parameter to be the size of the hash input. For RSA signatures
1789 other than raw PKCS#1 v1.5, this must match the output size of the
1790 specified hash algorithm.
1791 * The functions mbedtls_pk_sign(), mbedtls_pk_sign_restartable(),
1792 mbedtls_ecdsa_write_signature() and
1793 mbedtls_ecdsa_write_signature_restartable() now take an extra parameter
1794 indicating the size of the output buffer for the signature.
1795 * Implement one-shot cipher functions, psa_cipher_encrypt and
1796 psa_cipher_decrypt, according to the PSA Crypto API 1.0.0
1797 specification.
1798 * Direct access to fields of structures declared in public headers is no
1799 longer supported except for fields that are documented public. Use accessor
1800 functions instead. For more information, see the migration guide entry
1801 "Most structure fields are now private".
Dave Rodgman9bd03892021-07-01 16:59:49 +01001802 * mbedtls_ssl_get_session_pointer() has been removed, and
1803 mbedtls_ssl_{set,get}_session() may now only be called once for any given
1804 SSL context.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001805
1806Default behavior changes
1807 * Enable by default the functionalities which have no reason to be disabled.
1808 They are: ARIA block cipher, CMAC mode, elliptic curve J-PAKE library and
1809 Key Wrapping mode as defined in NIST SP 800-38F. Fixes #4036.
1810 * Some default policies for X.509 certificate verification and TLS have
1811 changed: curves and hashes weaker than 255 bits are no longer accepted
1812 by default. The default order in TLS now favors faster curves over larger
1813 curves.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001814
1815Requirement changes
1816 * The library now uses the %zu format specifier with the printf() family of
1817 functions, so requires a toolchain that supports it. This change does not
1818 affect the maintained LTS branches, so when contributing changes please
1819 bear this in mind and do not add them to backported code.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001820 * If you build the development version of Mbed TLS, rather than an official
1821 release, some configuration-independent files are now generated at build
1822 time rather than checked into source control. This includes some library
1823 source files as well as the Visual Studio solution. Perl, Python 3 and a
1824 C compiler for the host platform are required. See “Generated source files
1825 in the development branch” in README.md for more information.
1826 * Refresh the minimum supported versions of tools to build the
1827 library. CMake versions older than 3.10.2 and Python older
1828 than 3.6 are no longer supported.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001829
1830Removals
1831 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
1832 compile-time option, which was off by default. Users should not trust
1833 certificates signed with SHA-1 due to the known attacks against SHA-1.
Manuel Pégourié-Gonnard143b1e32021-05-05 09:46:01 +02001834 If needed, SHA-1 certificates can still be verified by using a custom
Manuel Pégourié-Gonnarde7563062021-04-26 10:08:29 +02001835 verification profile.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001836 * Removed deprecated things in psa/crypto_compat.h. Fixes #4284
1837 * Removed deprecated functions from hashing modules. Fixes #4280.
1838 * Remove PKCS#11 library wrapper. PKCS#11 has limited functionality,
1839 lacks automated tests and has scarce documentation. Also, PSA Crypto
1840 provides a more flexible private key management.
1841 More details on PCKS#11 wrapper removal can be found in the mailing list
1842 https://lists.trustedfirmware.org/pipermail/mbed-tls/2020-April/000024.html
1843 * Remove deprecated error codes. Fix #4283
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001844 * Remove MBEDTLS_ENABLE_WEAK_CIPHERSUITES configuration option. Fixes #4416.
1845 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
1846 compile-time option. This option has been inactive for a long time.
1847 Please use the `lifetime` parameter of `mbedtls_ssl_ticket_setup()`
1848 instead.
1849 * Remove the following deprecated functions and constants of hex-encoded
1850 primes based on RFC 5114 and RFC 3526 from library code and tests:
1851 mbedtls_aes_encrypt(), mbedtls_aes_decrypt(), mbedtls_mpi_is_prime(),
1852 mbedtls_cipher_auth_encrypt(), mbedtls_cipher_auth_decrypt(),
1853 mbedtls_ctr_drbg_update(), mbedtls_hmac_drbg_update(),
1854 mbedtls_ecdsa_write_signature_det(), mbedtls_ecdsa_sign_det(),
1855 mbedtls_ssl_conf_dh_param(), mbedtls_ssl_get_max_frag_len(),
1856 MBEDTLS_DHM_RFC5114_MODP_2048_P, MBEDTLS_DHM_RFC5114_MODP_2048_G,
1857 MBEDTLS_DHM_RFC3526_MODP_2048_P, MBEDTLS_DHM_RFC3526_MODP_2048_G,
1858 MBEDTLS_DHM_RFC3526_MODP_3072_P, MBEDTLS_DHM_RFC3526_MODP_3072_G,
1859 MBEDTLS_DHM_RFC3526_MODP_4096_P, MBEDTLS_DHM_RFC3526_MODP_4096_G.
1860 Remove the deprecated file: include/mbedtls/net.h. Fixes #4282.
1861 * Remove MBEDTLS_SSL_MAX_CONTENT_LEN configuration option, since
1862 MBEDTLS_SSL_IN_CONTENT_LEN and MBEDTLS_SSL_OUT_CONTENT_LEN replace
1863 it. Fixes #4362.
1864 * Remove the MBEDTLS_SSL_RECORD_CHECKING option and enable by default its
1865 previous action. Fixes #4361.
1866 * Remove support for TLS 1.0, TLS 1.1 and DTLS 1.0, as well as support for
1867 CBC record splitting, fallback SCSV, and the ability to configure
1868 ciphersuites per version, which are no longer relevant. This removes the
1869 configuration options MBEDTLS_SSL_PROTO_TLS1,
1870 MBEDTLS_SSL_PROTO_TLS1_1, MBEDTLS_SSL_CBC_RECORD_SPLITTING and
1871 MBEDTLS_SSL_FALLBACK_SCSV as well as the functions
1872 mbedtls_ssl_conf_cbc_record_splitting(),
1873 mbedtls_ssl_get_key_exchange_md_ssl_tls(), mbedtls_ssl_conf_fallback(),
1874 and mbedtls_ssl_conf_ciphersuites_for_version(). Fixes #4286.
1875 * The RSA module no longer supports private-key operations with the public
1876 key and vice versa.
1877 * Remove the MBEDTLS_SSL_DTLS_BADMAC_LIMIT config.h option. Fixes #4403.
1878 * Remove all the 3DES ciphersuites:
1879 MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
1880 MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
1881 MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
1882 MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
1883 MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
1884 MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
1885 MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA,
1886 MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
1887 MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA. Remove the
1888 MBEDTLS_REMOVE_3DES_CIPHERSUITES option which is no longer relevant.
1889 Fixes #4367.
1890 * Remove the MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 option and let the code
1891 behave as if it was always disabled. Fixes #4386.
1892 * Remove MBEDTLS_ECDH_LEGACY_CONTEXT config option since this was purely for
1893 backward compatibility which is no longer supported. Addresses #4404.
1894 * Remove the following macros: MBEDTLS_CHECK_PARAMS,
1895 MBEDTLS_CHECK_PARAMS_ASSERT, MBEDTLS_PARAM_FAILED,
1896 MBEDTLS_PARAM_FAILED_ALT. Fixes #4313.
1897 * Remove the MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION config.h
1898 option. The mbedtls_x509_crt_parse_der_with_ext_cb() is the way to go for
1899 migration path. Fixes #4378.
Dave Rodgman745e3582021-07-05 18:53:31 +01001900 * Remove the MBEDTLS_X509_CHECK_KEY_USAGE and
1901 MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE config.h options and let the code
1902 behave as if they were always enabled. Fixes #4405.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001903 * MBEDTLS_ECP_MAX_BITS is no longer a configuration option because it is
1904 now determined automatically based on supported curves.
Dave Rodgman745e3582021-07-05 18:53:31 +01001905 * Remove the following functions: mbedtls_timing_self_test(),
1906 mbedtls_hardclock_poll(), mbedtls_timing_hardclock() and
1907 mbedtls_set_alarm(). Fixes #4083.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001908 * The configuration option MBEDTLS_ECP_NO_INTERNAL_RNG has been removed as
1909 it no longer had any effect.
Dave Rodgman745e3582021-07-05 18:53:31 +01001910 * Remove all support for MD2, MD4, RC4, Blowfish and XTEA. This removes the
1911 corresponding modules and all their APIs and related configuration
1912 options. Fixes #4084.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001913 * Remove MBEDTLS_SSL_TRUNCATED_HMAC and also remove
1914 MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT config option. Users are better served by
1915 using a CCM-8 ciphersuite than a CBC ciphersuite with truncated HMAC.
1916 See issue #4341 for more details.
1917 * Remove the compile-time option
1918 MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001919
1920Features
1921 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
1922 signature with a specific salt length. This function allows to validate
1923 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
1924 Meuter in PR #3183.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001925 * Added support for built-in driver keys through the PSA opaque crypto
1926 driver interface. Refer to the documentation of
1927 MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS for more information.
1928 * Implement psa_sign_message() and psa_verify_message().
1929 * The multi-part GCM interface (mbedtls_gcm_update() or
1930 mbedtls_cipher_update()) no longer requires the size of partial inputs to
1931 be a multiple of 16.
1932 * The multi-part GCM interface now supports chunked associated data through
1933 multiple calls to mbedtls_gcm_update_ad().
1934 * The new function mbedtls_mpi_random() generates a random value in a
1935 given range uniformly.
1936 * Alternative implementations of the AES, DHM, ECJPAKE, ECP, RSA and timing
1937 modules had undocumented constraints on their context types. These
1938 constraints have been relaxed.
1939 See docs/architecture/alternative-implementations.md for the remaining
1940 constraints.
1941 * The new functions mbedtls_dhm_get_len() and mbedtls_dhm_get_bitlen()
1942 query the size of the modulus in a Diffie-Hellman context.
1943 * The new function mbedtls_dhm_get_value() copy a field out of a
1944 Diffie-Hellman context.
1945 * Use the new function mbedtls_ecjpake_set_point_format() to select the
1946 point format for ECJPAKE instead of accessing the point_format field
1947 directly, which is no longer supported.
1948 * Implement psa_mac_compute() and psa_mac_verify() as defined in the
1949 PSA Cryptograpy API 1.0.0 specification.
1950
1951Security
Dave Rodgman5b13f602021-07-05 18:09:16 +01001952 * Fix a bias in the generation of finite-field Diffie-Hellman-Merkle (DHM)
1953 private keys and of blinding values for DHM and elliptic curves (ECP)
1954 computations. Reported by FlorianF89 in #4245.
1955 * Fix a potential side channel vulnerability in ECDSA ephemeral key generation.
1956 An adversary who is capable of very precise timing measurements could
1957 learn partial information about the leading bits of the nonce used for the
1958 signature, allowing the recovery of the private key after observing a
1959 large number of signature operations. This completes a partial fix in
1960 Mbed TLS 2.20.0.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001961 * Fix an issue where an adversary with access to precise enough information
1962 about memory accesses (typically, an untrusted operating system attacking
1963 a secure enclave) could recover an RSA private key after observing the
1964 victim performing a single private-key operation. Found and reported by
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001965 Zili KOU, Wenjian HE, Sharad Sinha, and Wei ZHANG.
Tom Cosgroveb3c6a1e2023-03-08 15:47:00 +00001966 * Fix an issue where an adversary with access to precise enough timing
1967 information (typically, a co-located process) could recover a Curve25519
1968 or Curve448 static ECDH key after inputting a chosen public key and
1969 observing the victim performing the corresponding private-key operation.
1970 Found and reported by Leila Batina, Lukas Chmielewski, Björn Haase, Niels
1971 Samwel and Peter Schwabe.
Dave Rodgman10ba5532021-04-26 14:58:26 +01001972
1973Bugfix
1974 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
1975 lead to the seed file corruption in case if the path to the seed file is
1976 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
1977 Krasnoshchok in #3616.
1978 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
1979 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
1980 to create is not valid, bringing them in line with version 1.0.0 of the
1981 specification. Fix #4271.
1982 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
1983 get printf format specifier warnings.
1984 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
1985 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
1986 in line with version 1.0.0 of the specification. Fix #4162.
1987 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
1988 zero. Fixes #1792
Gilles Peskinef4998b02021-06-10 15:51:54 +02001989 * Fix some cases in the bignum module where the library constructed an
1990 unintended representation of the value 0 which was not processed
1991 correctly by some bignum operations. This could happen when
1992 mbedtls_mpi_read_string() was called on "-0", or when
1993 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
1994 the arguments being negative and the other being 0. Fixes #4643.
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01001995 * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
1996 defined. Fixes #4217.
1997 * Fix an incorrect error code when parsing a PKCS#8 private key.
1998 * In a TLS client, enforce the Diffie-Hellman minimum parameter size
1999 set with mbedtls_ssl_conf_dhm_min_bitlen() precisely. Before, the
2000 minimum size was rounded down to the nearest multiple of 8.
2001 * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
2002 defined to specific values. If the code is used in a context
2003 where these are already defined, this can result in a compilation
2004 error. Instead, assume that if they are defined, the values will
2005 be adequate to build Mbed TLS.
2006 * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
2007 nonetheless, resulting in undefined reference errors when building a
2008 shared library. Reported by Guillermo Garcia M. in #4411.
2009 * The cipher suite TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 was not available
2010 when SHA-1 was disabled and was offered when SHA-1 was enabled but SHA-384
2011 was disabled. Fix the dependency. Fixes #4472.
2012 * Do not offer SHA384 cipher suites when SHA-384 is disabled. Fixes #4499.
2013 * Fix test suite code on platforms where int32_t is not int, such as
2014 Arm Cortex-M. Fixes #4530.
2015 * Fix some issues affecting MBEDTLS_ARIA_ALT implementations: a misplaced
2016 directive in a header and a missing initialization in the self-test.
2017 * Fix a missing initialization in the Camellia self-test, affecting
2018 MBEDTLS_CAMELLIA_ALT implementations.
2019 * Restore the ability to configure PSA via Mbed TLS options to support RSA
2020 key pair operations but exclude RSA key generation. When MBEDTLS_GENPRIME
2021 is not defined PSA will no longer attempt to use mbedtls_rsa_gen_key().
2022 Fixes #4512.
2023 * Fix a regression introduced in 2.24.0 which broke (D)TLS CBC ciphersuites
2024 (when the encrypt-then-MAC extension is not in use) with some ALT
2025 implementations of the underlying hash (SHA-1, SHA-256, SHA-384), causing
2026 the affected side to wrongly reject valid messages. Fixes #4118.
2027 * Remove outdated check-config.h check that prevented implementing the
2028 timing module on Mbed OS. Fixes #4633.
2029 * Fix PSA_ALG_TLS12_PRF and PSA_ALG_TLS12_PSK_TO_MS being too permissive
2030 about missing inputs.
2031 * Fix mbedtls_net_poll() and mbedtls_net_recv_timeout() often failing with
2032 MBEDTLS_ERR_NET_POLL_FAILED on Windows. Fixes #4465.
2033 * Fix a resource leak in a test suite with an alternative AES
2034 implementation. Fixes #4176.
2035 * Fix a crash in mbedtls_mpi_debug_mpi on a bignum having 0 limbs. This
2036 could notably be triggered by setting the TLS debug level to 3 or above
2037 and using a Montgomery curve for the key exchange. Reported by lhuang04
2038 in #4578. Fixes #4608.
2039 * psa_verify_hash() was relying on implementation-specific behavior of
2040 mbedtls_rsa_rsassa_pss_verify() and was causing failures in some _ALT
2041 implementations. This reliance is now removed. Fixes #3990.
2042 * Disallow inputs of length different from the corresponding hash when
2043 signing or verifying with PSA_ALG_RSA_PSS (The PSA Crypto API mandates
2044 that PSA_ALG_RSA_PSS uses the same hash throughout the algorithm.)
2045 * Fix a null pointer dereference when mbedtls_mpi_exp_mod() was called with
2046 A=0 represented with 0 limbs. Up to and including Mbed TLS 2.26, this bug
2047 could not be triggered by code that constructed A with one of the
2048 mbedtls_mpi_read_xxx functions (including in particular TLS code) since
2049 those always built an mpi object with at least one limb.
2050 Credit to OSS-Fuzz. Fixes #4641.
2051 * Fix mbedtls_mpi_gcd(G,A,B) when the value of B is zero. This had no
2052 effect on Mbed TLS's internal use of mbedtls_mpi_gcd(), but may affect
2053 applications that call mbedtls_mpi_gcd() directly. Fixes #4642.
2054 * The PSA API no longer allows the creation or destruction of keys with a
2055 read-only lifetime. The persistence level PSA_KEY_PERSISTENCE_READ_ONLY
2056 can now only be used as intended, for keys that cannot be modified through
2057 normal use of the API.
2058 * When MBEDTLS_PSA_CRYPTO_SPM is enabled, crypto_spe.h was not included
2059 in all the right places. Include it from crypto_platform.h, which is
2060 the natural place. Fixes #4649.
2061 * Fix which alert is sent in some cases to conform to the
2062 applicable RFC: on an invalid Finished message value, an
2063 invalid max_fragment_length extension, or an
2064 unsupported extension used by the server.
Dave Rodgmana84a8eb2021-07-01 17:01:04 +01002065 * Correct (change from 12 to 13 bytes) the value of the macro describing the
2066 maximum nonce length returned by psa_aead_generate_nonce().
Dave Rodgman10ba5532021-04-26 14:58:26 +01002067
2068Changes
2069 * Fix the setting of the read timeout in the DTLS sample programs.
2070 * Add extra printf compiler warning flags to builds.
2071 * Fix memsan build false positive in x509_crt.c with clang 11
Dave Rodgmanbb2eece2021-06-30 18:07:19 +01002072 * Alternative implementations of CMAC may now opt to not support 3DES as a
2073 CMAC block cipher, and still pass the CMAC self test.
2074 * Remove the AES sample application programs/aes/aescrypt2 which shows
2075 bad cryptographic practice. Fix #1906.
2076 * Remove configs/config-psa-crypto.h, which no longer had any intended
2077 differences from the default configuration, but had accidentally diverged.
2078 * When building the test suites with GNU make, invoke python3 or python, not
2079 python2, which is no longer supported upstream.
2080 * fix build failure on MinGW toolchain when __USE_MING_ANSI_STDIO is on.
2081 When that flag is on, standard GNU C printf format specifiers
2082 should be used.
2083 * Replace MBEDTLS_SSL_CID_PADDING_GRANULARITY and
2084 MBEDTLS_SSL_TLS1_3_PADDING_GRANULARITY with a new single unified option
2085 MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY. Fixes #4335.
2086 * Reduce the default value of MBEDTLS_ECP_WINDOW_SIZE. This reduces RAM usage
2087 during ECC operations at a negligible performance cost.
2088 * mbedtls_mpi_read_binary(), mbedtls_mpi_read_binary_le() and
2089 mbedtls_mpi_read_string() now construct an mbedtls_mpi object with 0 limbs
2090 when their input has length 0. Note that this is an implementation detail
2091 and can change at any time, so this change should be transparent, but it
2092 may result in mbedtls_mpi_write_binary() or mbedtls_mpi_write_string()
2093 now writing an empty string where it previously wrote one or more
2094 zero digits when operating from values constructed with an mpi_read
2095 function and some mpi operations.
2096 * Add CMake package config generation for CMake projects consuming Mbed TLS.
2097 * config.h has been split into build_info.h and mbedtls_config.h
2098 build_info.h is intended to be included from C code directly, while
2099 mbedtls_config.h is intended to be edited by end users wishing to
2100 change the build configuration, and should generally only be included from
2101 build_info.h.
2102 * The handling of MBEDTLS_CONFIG_FILE has been moved into build_info.h.
2103 * A config file version symbol, MBEDTLS_CONFIG_VERSION was introduced.
2104 Defining it to a particular value will ensure that Mbed TLS interprets
2105 the config file in a way that's compatible with the config file format
2106 used by the Mbed TLS release whose MBEDTLS_VERSION_NUMBER has the same
2107 value.
2108 The only value supported by Mbed TLS 3.0.0 is 0x03000000.
2109 * Various changes to which alert and/or error code may be returned
2110 * during the TLS handshake.
2111 * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
2112 PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
2113 when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
2114 is also applied when loading a key from storage.
Dave Rodgman10ba5532021-04-26 14:58:26 +01002115
Dave Rodgman74755e42021-03-08 18:35:44 +00002116= mbed TLS 2.26.0 branch released 2021-03-08
2117
2118API changes
2119 * Renamed the PSA Crypto API output buffer size macros to bring them in line
2120 with version 1.0.0 of the specification.
2121 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
2122 in bits rather than bytes, with an additional flag to indicate if the
2123 size may have been rounded up to a whole number of bytes.
2124 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
2125 with version 1.0.0 of the specification.
2126
2127Default behavior changes
2128 * In mbedtls_rsa_context objects, the ver field was formerly documented
2129 as always 0. It is now reserved for internal purposes and may take
2130 different values.
2131
2132New deprecations
2133 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
2134 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
2135 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
2136 deprecated.
2137 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
2138 have been renamed, and the old names deprecated.
2139
2140Features
2141 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
2142 CTR_DRBG is used by default if it is available, but you can override
2143 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
2144 Fix #3354.
2145 * Automatic fallback to a software implementation of ECP when
2146 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
2147 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
2148 * The PSA crypto subsystem can now be configured to use less static RAM by
2149 tweaking the setting for the maximum amount of keys simultaneously in RAM.
2150 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
2151 can exist simultaneously. It has a sensible default if not overridden.
2152 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
2153 now use an external random generator instead of the library's own
2154 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
2155 and see the documentation of mbedtls_psa_external_get_random() for details.
2156 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
2157 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
2158 random generator with mbedtls_xxx functions. See the documentation of
2159 mbedtls_psa_get_random() for details.
2160 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
2161 minimum MAC or tag length thanks to the new wildcards
2162 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
2163 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
2164
2165Security
2166 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
2167 nonce from entropy. Applications were affected if they called
2168 mbedtls_ctr_drbg_set_nonce_len(), if they called
2169 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
2170 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
2171 In such cases, a random nonce was necessary to achieve the advertised
2172 security strength, but the code incorrectly used a constant instead of
2173 entropy from the nonce.
2174 Found by John Stroebel in #3819 and fixed in #3973.
2175 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
2176 |A| - |B| where |B| is larger than |A| and has more limbs (so the
2177 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
2178 applications calling mbedtls_mpi_sub_abs() directly are affected:
2179 all calls inside the library were safe since this function is
2180 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
2181 * Fix an errorneous estimation for an internal buffer in
2182 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
2183 value the function might fail to write a private RSA keys of the largest
2184 supported size.
2185 Found by Daniel Otte, reported in #4093 and fixed in #4094.
2186 * Fix a stack buffer overflow with mbedtls_net_poll() and
2187 mbedtls_net_recv_timeout() when given a file descriptor that is
2188 beyond FD_SETSIZE. Reported by FigBug in #4169.
2189 * Guard against strong local side channel attack against base64 tables by
2190 making access aceess to them use constant flow code.
2191
2192Bugfix
2193 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
2194 * Fix memory leak that occured when calling psa_close_key() on a
2195 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
2196 * Fix an incorrect error code if an RSA private operation glitched.
2197 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
2198 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
2199 is enabled, on platforms where initializing a mutex allocates resources.
2200 This was a regression introduced in the previous release. Reported in
2201 #4017, #4045 and #4071.
2202 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
2203 twice is safe. This happens for RSA when some Mbed TLS library functions
2204 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
2205 enabled on platforms where freeing a mutex twice is not safe.
2206 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
2207 when MBEDTLS_THREADING_C is enabled on platforms where initializing
2208 a mutex allocates resources.
2209 * Fixes a bug where, if the library was configured to include support for
2210 both the old SE interface and the new PSA driver interface, external keys were
2211 not loaded from storage. This was fixed by #3996.
2212 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
2213 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
2214 include this extension in all CA certificates that contain public keys
2215 used to validate digital signatures on certificates and MUST mark the
2216 extension as critical in such certificates." Previous to this change,
2217 the extension was always marked as non-critical. This was fixed by
2218 #3698.
2219
2220Changes
2221 * A new library C file psa_crypto_client.c has been created to contain
2222 the PSA code needed by a PSA crypto client when the PSA crypto
2223 implementation is not included into the library.
2224 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
2225 now uses the getrandom syscall instead of reading from /dev/urandom.
2226
Janos Follath56b38c22020-12-09 01:34:21 +00002227= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +00002228
2229API changes
2230 * The numerical values of the PSA Crypto API macros have been updated to
2231 conform to version 1.0.0 of the specification.
2232 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
2233 The underlying stream cipher is determined by the key type
2234 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
2235 * The functions mbedtls_cipher_auth_encrypt() and
2236 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
2237 as they have no way to check if the output buffer is large enough.
2238 Please use mbedtls_cipher_auth_encrypt_ext() and
2239 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
2240 Cryptofuzz. Fixes #3665.
2241
2242Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +00002243 * Update the minimum required CMake version to 2.8.12. This silences a
2244 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +00002245
2246New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +01002247 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002248 Use PSA_ALG_STREAM_CIPHER instead.
2249 * The functions mbedtls_cipher_auth_encrypt() and
2250 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
2251 functions mbedtls_cipher_auth_encrypt_ext() and
2252 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
2253 these new functions always append the tag to the ciphertext, and include
2254 the tag in the ciphertext length.
2255
2256Features
Janos Follathd6ce1162020-12-09 16:32:01 +00002257 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
2258 ciphers, asymmetric signing/verification and key generation, validate_key
2259 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +00002260 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002261 * In PSA, allow using a key declared with a base key agreement algorithm
2262 in combined key agreement and derivation operations, as long as the key
2263 agreement algorithm in use matches the algorithm the key was declared with.
2264 This is currently non-standard behaviour, but expected to make it into a
2265 future revision of the PSA Crypto standard.
2266 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
2267 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
2268 external CMake projects that include this one to avoid CMake target name
2269 clashes. The default value of this variable is "", so default target names
2270 are unchanged.
2271 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
2272 Pascal, improved by Ron Eldor.
2273 * In the PSA API, it is no longer necessary to open persistent keys:
2274 operations now accept the key identifier. The type psa_key_handle_t is now
2275 identical to psa_key_id_t instead of being platform-defined. This bridges
2276 the last major gap to compliance with the PSA Cryptography specification
2277 version 1.0.0. Opening persistent keys is still supported for backward
2278 compatibility, but will be deprecated and later removed in future
2279 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002280 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
2281 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
2282 1.0.0 of the PSA Crypto API specification.
2283
2284Security
2285 * The functions mbedtls_cipher_auth_encrypt() and
2286 mbedtls_cipher_auth_decrypt() would write past the minimum documented
2287 size of the output buffer when used with NIST_KW. As a result, code using
2288 those functions as documented with NIST_KW could have a buffer overwrite
2289 of up to 15 bytes, with consequences ranging up to arbitrary code
2290 execution depending on the location of the output buffer.
2291 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
2292 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
2293 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
2294 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
2295 which is how most uses of randomization in asymmetric cryptography
2296 (including key generation, intermediate value randomization and blinding)
2297 are implemented. This could cause failures or the silent use of non-random
2298 values. A random generator can fail if it needs reseeding and cannot not
2299 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
2300 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
2301 * Fix a compliance issue whereby we were not checking the tag on the
2302 algorithm parameters (only the size) when comparing the signature in the
2303 description part of the cert to the real signature. This meant that a
2304 NULL algorithm parameters entry would look identical to an array of REAL
2305 (size zero) to the library and thus the certificate would be considered
2306 valid. However, if the parameters do not match in *any* way then the
2307 certificate should be considered invalid, and indeed OpenSSL marks these
2308 certs as invalid when mbedtls did not.
2309 Many thanks to guidovranken who found this issue via differential fuzzing
2310 and reported it in #3629.
2311 * Zeroising of local buffers and variables which are used for calculations
2312 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
2313 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
2314 functions to erase sensitive data from memory. Reported by
2315 Johan Malmgren and Johan Uppman Bruce from Sectra.
2316
2317Bugfix
Janos Follath76027f62020-12-09 16:28:35 +00002318 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
2319 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +00002320 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
2321 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
2322 * Include the psa_constant_names generated source code in the source tree
2323 instead of generating it at build time. Fixes #3524.
2324 * Fix rsa_prepare_blinding() to retry when the blinding value is not
2325 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
2326 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
2327 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
2328 Fixes #3647.
2329 * Use socklen_t on Android and other POSIX-compliant system
2330 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
2331 Fix #3432.
2332 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
2333 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
2334 psa_cipher_* functions compliant with the PSA Crypto API specification.
2335 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
2336 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
2337 only the curves that support ECDSA, filter the list with
2338 mbedtls_ecdsa_can_do().
2339 * Fix psa_generate_key() returning an error when asked to generate
2340 an ECC key pair on Curve25519 or secp244k1.
2341 * Fix psa_key_derivation_output_key() to allow the output of a combined key
2342 agreement and subsequent key derivation operation to be used as a key
2343 inside of the PSA Crypto core.
2344 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
2345 chars. Fixes a build failure on platforms where char is unsigned. Fixes
2346 #3794.
2347 * Fix an off-by-one error in the additional data length check for
2348 CCM, which allowed encryption with a non-standard length field.
2349 Fixes #3719.
2350 * Correct the default IV size for mbedtls_cipher_info_t structures using
2351 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
2352 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
2353 defined. Fix contributed in #3571.
2354 * Fix conditions for including string.h in error.c. Fixes #3866.
2355 * psa_set_key_id() now also sets the lifetime to persistent for keys located
2356 in a secure element.
2357 * Attempting to create a volatile key with a non-zero key identifier now
2358 fails. Previously the key identifier was just ignored when creating a
2359 volatile key.
2360 * Attempting to create or register a key with a key identifier in the vendor
2361 range now fails.
2362 * Fix build failures on GCC 11. Fixes #3782.
2363 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
2364 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
2365 (an error condition) and the second operand was aliased to the result.
2366 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
2367 could go undetected, resulting in an incorrect result.
2368 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
2369 Fixes #2927.
2370 * In PEM writing functions, fill the trailing part of the buffer with null
2371 bytes. This guarantees that the corresponding parsing function can read
2372 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
2373 until this property was inadvertently broken in Mbed TLS 2.19.0.
2374 Fixes #3682.
2375 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
2376 option on. In this configuration key management methods that are required
2377 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
2378 Fixes #3818. Reported by John Stroebel.
2379
2380Changes
2381 * Reduce stack usage significantly during sliding window exponentiation.
2382 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
2383 * The PSA persistent storage format is updated to always store the key bits
2384 attribute. No automatic upgrade path is provided. Previously stored keys
2385 must be erased, or manually upgraded based on the key storage format
2386 specification (docs/architecture/mbed-crypto-storage-specification.md).
2387 Fixes #3740.
2388 * Remove the zeroization of a pointer variable in AES rounds. It was valid
2389 but spurious and misleading since it looked like a mistaken attempt to
2390 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
2391 Leti, France.
2392
Janos Follath6012f0e2020-08-26 15:32:10 +01002393= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +01002394
2395API changes
Janos Follath6012f0e2020-08-26 15:32:10 +01002396 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
2397 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
2398 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +01002399 Rename associated macros as well:
2400 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
2401 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
2402 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
2403 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
2404
2405Default behavior changes
2406 * Stop storing persistent information about externally stored keys created
2407 through PSA Crypto with a volatile lifetime. Reported in #3288 and
2408 contributed by Steven Cooreman in #3382.
2409
2410Features
2411 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
2412 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
2413 * Support building on e2k (Elbrus) architecture: correctly enable
2414 -Wformat-signedness, and fix the code that causes signed-one-bit-field
2415 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
2416 <akemi_homura@kurisa.ch>.
2417
2418Security
2419 * Fix a vulnerability in the verification of X.509 certificates when
2420 matching the expected common name (the cn argument of
2421 mbedtls_x509_crt_verify()) with the actual certificate name: when the
2422 subjecAltName extension is present, the expected name was compared to any
2423 name in that extension regardless of its type. This means that an
2424 attacker could for example impersonate a 4-bytes or 16-byte domain by
2425 getting a certificate for the corresponding IPv4 or IPv6 (this would
2426 require the attacker to control that IP address, though). Similar attacks
2427 using other subjectAltName name types might be possible. Found and
2428 reported by kFYatek in #3498.
2429 * When checking X.509 CRLs, a certificate was only considered as revoked if
2430 its revocationDate was in the past according to the local clock if
2431 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
2432 certificates were never considered as revoked. On builds with
2433 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
2434 example, an untrusted OS attacking a secure enclave) could prevent
2435 revocation of certificates via CRLs. Fixed by no longer checking the
2436 revocationDate field, in accordance with RFC 5280. Reported by
2437 yuemonangong in #3340. Reported independently and fixed by
2438 Raoul Strackx and Jethro Beekman in #3433.
2439 * In (D)TLS record decryption, when using a CBC ciphersuites without the
2440 Encrypt-then-Mac extension, use constant code flow memory access patterns
2441 to extract and check the MAC. This is an improvement to the existing
2442 countermeasure against Lucky 13 attacks. The previous countermeasure was
2443 effective against network-based attackers, but less so against local
2444 attackers. The new countermeasure defends against local attackers, even
2445 if they have access to fine-grained measurements. In particular, this
2446 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
2447 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
2448 (University of Florida) and Dave Tian (Purdue University).
2449 * Fix side channel in RSA private key operations and static (finite-field)
2450 Diffie-Hellman. An adversary with precise enough timing and memory access
2451 information (typically an untrusted operating system attacking a secure
2452 enclave) could bypass an existing counter-measure (base blinding) and
2453 potentially fully recover the private key.
2454 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
2455 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
2456 for pinpointing the problematic code.
2457 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
2458 application data from memory. Reported in #689 by
2459 Johan Uppman Bruce of Sectra.
2460
2461Bugfix
2462 * Library files installed after a CMake build no longer have execute
2463 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +01002464 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
2465 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +01002466 Reported in #3451 and fix contributed in #3452 by okhowang.
2467 * Fix the endianness of Curve25519 keys imported/exported through the PSA
2468 APIs. psa_import_key and psa_export_key will now correctly expect/output
2469 Montgomery keys in little-endian as defined by RFC7748. Contributed by
2470 Steven Cooreman in #3425.
2471 * Fix build errors when the only enabled elliptic curves are Montgomery
2472 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
2473 also fixes missing declarations reported by Steven Cooreman in #1147.
2474 * Fix self-test failure when the only enabled short Weierstrass elliptic
2475 curve is secp192k1. Fixes #2017.
2476 * PSA key import will now correctly import a Curve25519/Curve448 public key
2477 instead of erroring out. Contributed by Steven Cooreman in #3492.
2478 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
2479 lower bits. Fix contributed in #3540.
2480 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
2481 conditions. Reported and fix suggested by Guido Vranken in #3486.
2482 * Fix bug in redirection of unit test outputs on platforms where stdout is
2483 defined as a macro. First reported in #2311 and fix contributed in #3528.
2484
2485Changes
2486 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
2487 in #3478 and fix contributed in #3479 by okhowang.
2488 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
2489 previously could lead to stack overflow on constrained devices.
2490 Contributed by Doru Gucea and Simon Leet in #3464.
2491 * Undefine the ASSERT macro before defining it locally, in case it is defined
2492 in a platform header. Contributed by Abdelatif Guettouche in #3557.
2493 * Update copyright notices to use Linux Foundation guidance. As a result,
2494 the copyright of contributors other than Arm is now acknowledged, and the
2495 years of publishing are no longer tracked in the source files. This also
2496 eliminates the need for the lines declaring the files to be part of
2497 MbedTLS. Fixes #3457.
2498 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
2499 example applications which allows to provide a password for the key file
2500 specified through the existing key_file argument. This allows the use of
2501 these applications with password-protected key files. Analogously but for
2502 ssl_server2 only, add the command line parameter key_pwd2 which allows to
2503 set a password for the key file provided through the existing key_file2
2504 argument.
2505
Janos Follath13cba682020-06-26 12:40:52 +01002506= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +01002507
2508Default behavior changes
2509 * In the experimental PSA secure element interface, change the encoding of
2510 key lifetimes to encode a persistence level and the location. Although C
2511 prototypes do not effectively change, code calling
2512 psa_register_se_driver() must be modified to pass the driver's location
2513 instead of the keys' lifetime. If the library is upgraded on an existing
2514 device, keys created with the old lifetime value will not be readable or
2515 removable through Mbed TLS after the upgrade.
2516
2517Features
2518 * New functions in the error module return constant strings for
2519 high- and low-level error codes, complementing mbedtls_strerror()
2520 which constructs a string for any error code, including compound
2521 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
2522 in #3176.
2523 * The new utility programs/ssl/ssl_context_info prints a human-readable
2524 dump of an SSL context saved with mbedtls_ssl_context_save().
2525 * Add support for midipix, a POSIX layer for Microsoft Windows.
2526 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
2527 parsing unsupported certificate extensions via user provided callback.
2528 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
2529 a solution to #3241.
2530 * Pass the "certificate policies" extension to the callback supplied to
2531 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
2532 policies (#3419).
2533 * Added support to entropy_poll for the kern.arandom syscall supported on
2534 some BSD systems. Contributed by Nia Alarie in #3423.
2535 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
2536
2537Security
2538 * Fix a side channel vulnerability in modular exponentiation that could
2539 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
2540 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
2541 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
2542 Strackx (Fortanix) in #3394.
2543 * Fix side channel in mbedtls_ecp_check_pub_priv() and
2544 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
2545 private key that didn't include the uncompressed public key), as well as
2546 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
2547 f_rng argument. An attacker with access to precise enough timing and
2548 memory access information (typically an untrusted operating system
2549 attacking a secure enclave) could fully recover the ECC private key.
2550 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
2551 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
2552 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
2553 macros). This would cause the original Lucky 13 attack to be possible in
2554 those configurations, allowing an active network attacker to recover
2555 plaintext after repeated timing measurements under some conditions.
2556 Reported and fix suggested by Luc Perneel in #3246.
2557
2558Bugfix
2559 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
2560 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
2561 the example programs. Reported in #1430 and fix contributed by irwir.
2562 * Fix undefined behavior in X.509 certificate parsing if the
2563 pathLenConstraint basic constraint value is equal to INT_MAX.
2564 The actual effect with almost every compiler is the intended
2565 behavior, so this is unlikely to be exploitable anywhere. #3192
2566 * Fix issue with a detected HW accelerated record error not being exposed
2567 due to shadowed variable. Contributed by Sander Visser in #3310.
2568 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
2569 NULL pointer argument. Contributed by Sander Visser in #3312.
2570 * Fix potential linker errors on dual world platforms by inlining
2571 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
2572 from psa_crypto.c. Fixes #3300.
2573 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
2574 #2855.
2575 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
2576 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
2577 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
2578 * Remove unused macros from MSVC projects. Reported in #3297 and fix
2579 submitted in #3333 by irwir.
2580 * Add additional bounds checks in ssl_write_client_hello() preventing
2581 output buffer overflow if the configuration declared a buffer that was
2582 too small.
2583 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
2584 fix submitted in #3421 by Nia Alarie.
2585 * Fix building library/net_sockets.c and the ssl_mail_client program on
2586 NetBSD. Contributed by Nia Alarie in #3422.
2587 * Fix false positive uninitialised variable reported by cpp-check.
2588 Contributed by Sander Visser in #3311.
2589 * Update iv and len context pointers manually when reallocating buffers
2590 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
2591 when receiving a connection with CID, when these fields were shifted
2592 in ssl_parse_record_header().
2593
2594Changes
2595 * Fix warnings about signedness issues in format strings. The build is now
2596 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
2597 in #3153.
2598 * Fix minor performance issue in operations on Curve25519 caused by using a
2599 suboptimal modular reduction in one place. Found and fix contributed by
2600 Aurelien Jarno in #3209.
2601 * Combine identical cases in switch statements in md.c. Contributed
2602 by irwir in #3208.
2603 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
2604 by irwir in #3150.
2605 * Unify the example programs termination to call mbedtls_exit() instead of
2606 using a return command. This has been done to enable customization of the
2607 behavior in bare metal environments.
2608 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
2609 Contributed by Koh M. Nakagawa in #3326.
2610 * Use FindPython3 when cmake version >= 3.15.0
2611 * Abort the ClientHello writing function as soon as some extension doesn't
2612 fit into the record buffer. Previously, such extensions were silently
2613 dropped. As a consequence, the TLS handshake now fails when the output
2614 buffer is not large enough to hold the ClientHello.
2615 * The unit tests now rely on header files in tests/include/test and source
2616 files in tests/src. When building with make or cmake, the files in
2617 tests/src are compiled and the resulting object linked into each test
2618 executable.
2619 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
2620 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
2621 coutermeasures. If side channels are not a concern, this dependency can
2622 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
2623 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
2624 Martinho. #3147
2625 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
2626 in #3182 and fix submitted by irwir. #3217
2627 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
2628
Janos Follath876e0252020-04-08 17:15:18 +01002629= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00002630
2631New deprecations
2632 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
2633 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04002634 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
2635 mbedtls_ssl_get_output_max_frag_len() and
2636 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
2637 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +00002638
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01002639Security
2640 * Fix issue in DTLS handling of new associations with the same parameters
2641 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
2642 the server could cause it to drop established associations with
2643 legitimate clients, resulting in a Denial of Service. This could only
2644 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
2645 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +01002646 * Fix side channel in ECC code that allowed an adversary with access to
2647 precise enough timing and memory access information (typically an
2648 untrusted operating system attacking a secure enclave) to fully recover
2649 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
2650 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +02002651 * Fix a potentially remotely exploitable buffer overread in a
2652 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +01002653
Janos Follathee856862020-04-08 16:58:36 +01002654Features
2655 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
2656 resizes the I/O buffers before and after handshakes, reducing the memory
2657 consumption during application data transfer.
2658
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01002659Bugfix
2660 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
2661 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +03002662 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
2663 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +01002664 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
2665 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +01002666
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002667Changes
2668 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
2669 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -04002670 * Split mbedtls_ssl_get_max_frag_len() into
2671 mbedtls_ssl_get_output_max_frag_len() and
2672 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
2673 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
2674 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002675
Janos Follath138c2ea2020-02-19 14:32:24 +00002676= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +00002677
Andres Amaya Garcia09634242018-11-29 09:55:41 +00002678New deprecations
2679 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
2680 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +00002681 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +01002682 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
2683 library which allows TLS authentication to use keys stored in a
2684 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +00002685
Gilles Peskinef142d4c2020-02-11 19:05:03 +01002686Security
2687 * Fix potential memory overread when performing an ECDSA signature
2688 operation. The overread only happens with cryptographically low
2689 probability (of the order of 2^-n where n is the bitsize of the curve)
2690 unless the RNG is broken, and could result in information disclosure or
2691 denial of service (application crash or extra resource consumption).
2692 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +01002693 * To avoid a side channel vulnerability when parsing an RSA private key,
2694 read all the CRT parameters from the DER structure rather than
2695 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
2696 Brumley. Reported and fix contributed by Jack Lloyd.
2697 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +01002698
2699Features
2700 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
2701 support without SHA-384.
2702
2703API changes
2704 * Change the encoding of key types and curves in the PSA API. The new
2705 values are aligned with the upcoming release of the PSA Crypto API
2706 specification version 1.0.0. The main change which may break some
2707 existing code is that elliptic curve key types no longer encode the
2708 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
2709 a curve family and the key size determines the exact curve (for example,
2710 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
2711
Jaeden Amero62236d72020-01-24 18:20:22 +00002712Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +01002713 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +01002714 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
2715 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +01002716 * Fix some false-positive uninitialized variable warnings in X.509. Fix
2717 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +01002718 * Fix a possible error code mangling in psa_mac_verify_finish() when
2719 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +00002720 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
2721 RSA keys that would later be rejected by functions expecting private
2722 keys. Found by Catena cyber using oss-fuzz (issue 20467).
2723 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
2724 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +00002725
Jaeden Amerod56a2af2020-01-15 18:07:20 +00002726= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +03002727
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002728Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002729 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002730 entropy function to obtain entropy for a nonce if the entropy size is less
2731 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002732 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002733 nonce length to 0.
2734
2735Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002736 * Enforce that mbedtls_entropy_func() gathers a total of
2737 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002738 default configuration, on a platform with a single entropy source, the
2739 entropy module formerly only grabbed 32 bytes, which is good enough for
2740 security if the source is genuinely strong, but less than the expected 64
2741 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +01002742 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
2743 mbedtls_internal_aes_decrypt() before exiting the function. The value of
2744 these variables can be used to recover the last round key. To follow best
2745 practice and to limit the impact of buffer overread vulnerabilities (like
2746 Heartbleed) we need to zeroize them before exiting the function.
2747 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
2748 Grant Hernandez, and Kevin Butler (University of Florida) and
2749 Dave Tian (Purdue University).
2750 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
2751 constant time/constant trace, so side channel attacks can retrieve the
2752 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
2753 to have only large prime factors), and then, by brute force, recover the
2754 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
2755 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
2756 timings on the comparison in the key generation enabled the attacker to
2757 learn leading bits of the ephemeral key used during ECDSA signatures and to
2758 recover the private key. Reported by Jeremy Dubeuf.
2759 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
2760 failures could happen with alternative implementations of AES. Bug
2761 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
2762 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002763
2764Features
2765 * Key derivation inputs in the PSA API can now either come from a key object
2766 or from a buffer regardless of the step type.
2767 * The CTR_DRBG module can grab a nonce from the entropy source during the
2768 initial seeding. The default nonce length is chosen based on the key size
2769 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002770 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002771 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002772 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002773
2774API changes
2775 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
2776 key derivation function, use a buffer instead (this is now always
2777 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002778 * Rename psa_asymmetric_sign() to psa_sign_hash() and
2779 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002780
irwir6c0da642019-09-26 21:07:41 +03002781Bugfix
2782 * Fix an incorrect size in a debugging message. Reported and fix
2783 submitted by irwir. Fixes #2717.
2784 * Fix an unused variable warning when compiling without DTLS.
2785 Reported and fix submitted by irwir. Fixes #2800.
2786 * Remove a useless assignment. Reported and fix submitted by irwir.
2787 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002788 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +01002789 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002790 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002791 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002792 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002793 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002794 * mbedtls_ctr_drbg_set_entropy_len() and
2795 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
2796 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002797
2798Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002799 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002800 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002801 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002802 before).
2803 * Variables containing error codes are now initialized to an error code
2804 rather than success, so that coding mistakes or memory corruption tends to
2805 cause functions to return this error code rather than a success. There are
2806 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +01002807 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002808 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002809 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +01002810 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +01002811 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +01002812 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +01002813 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +03002814
Jaeden Amero914a5072019-09-18 13:35:57 +01002815= mbed TLS 2.19.1 branch released 2019-09-16
2816
2817Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -06002818 * Declare include headers as PUBLIC to propagate to CMake project consumers
2819 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +01002820 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
2821 TLS sessions with tools like Wireshark.
2822
2823API Changes
2824 * Make client_random and server_random const in
2825 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
2826 from modifying the client/server hello.
2827
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02002828Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +01002829 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +02002830 contributed by apple-ihack-geek in #2663.
2831
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002832= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002833
Gilles Peskine52157832018-08-11 00:51:04 +02002834Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002835 * Fix a missing error detection in ECJPAKE. This could have caused a
2836 predictable shared secret if a hardware accelerator failed and the other
2837 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +02002838 * When writing a private EC key, use a constant size for the private
2839 value, as specified in RFC 5915. Previously, the value was written
2840 as an ASN.1 INTEGER, which caused the size of the key to leak
2841 about 1 bit of information on average and could cause the value to be
2842 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +00002843 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
2844 implement blinding. Because of this for the same key and message the same
2845 blinding value was generated. This reduced the effectiveness of the
2846 countermeasure and leaked information about the private key through side
2847 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +02002848
Jaeden Ameroc73fde72019-03-27 14:50:21 +00002849Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02002850 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +02002851 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +02002852 store it in non-volatile storage, and later using it for TLS session
2853 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +03002854 * Add a new API function mbedtls_ssl_check_record() to allow checking that
2855 an incoming record is valid, authentic and has not been seen before. This
2856 feature can be used alongside Connection ID and SSL context serialisation.
2857 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
2858 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01002859 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
2860 (https://project-everest.github.io/). It can be enabled at compile time
2861 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
2862 verified and significantly faster, but is only supported on x86 platforms
2863 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
2864 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +01002865 * Add mbedtls_net_close(), enabling the building of forking servers where
2866 the parent process closes the client socket and continue accepting, and
2867 the child process closes the listening socket and handles the client
2868 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +00002869
Gilles Peskine60b29d62019-08-14 18:37:59 +02002870API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +02002871 * Add DER-encoded test CRTs to library/certs.c, allowing
2872 the example programs ssl_server2 and ssl_client2 to be run
2873 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
2874 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +01002875 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
2876 list all curves for which at least one of ECDH or ECDSA is supported, not
2877 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
2878 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
2879 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +01002880 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
2881 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
2882 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +00002883
2884New deprecations
2885 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
2886 RNG function as an input.
2887 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
2888 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +02002889
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002890Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +01002891 * Fix missing bounds checks in X.509 parsing functions that could
2892 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
2893 * Fix multiple X.509 functions previously returning ASN.1 low-level error
2894 codes to always wrap these codes into X.509 high level error codes before
2895 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +01002896 * Fix to allow building test suites with any warning that detects unused
2897 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +01002898 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +01002899 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +01002900 * Fix build failure when building with mingw on Windows by including
2901 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +01002902 * Fix Visual Studio Release x64 build configuration by inheriting
2903 PlatformToolset from the project configuration. Fixes #1430 reported by
2904 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +01002905 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
2906 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +02002907 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +01002908 * Avoid use of statically sized stack buffers for certificate writing.
2909 This previously limited the maximum size of DER encoded certificates
2910 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -04002911 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +02002912 * Update test certificates that were about to expire. Reported by
2913 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +02002914 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
2915 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
2916 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +01002917 * Fix propagation of restart contexts in restartable EC operations.
2918 This could previously lead to segmentation faults in builds using an
2919 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +01002920 * Fix memory leak in in mpi_miller_rabin(). Contributed by
2921 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -06002922 * Improve code clarity in x509_crt module, removing false-positive
2923 uninitialized variable warnings on some recent toolchains (GCC8, etc).
2924 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +01002925 * Fix bug in endianness conversion in bignum module. This lead to
2926 functionally incorrect code on bigendian systems which don't have
2927 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +01002928
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002929Changes
Hanno Becker136512b2019-05-30 11:16:02 +01002930 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +02002931 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
2932 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +01002933 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -06002934 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
2935 docker-env.sh) to simplify running test suites on a Linux host. Contributed
2936 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +01002937 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
2938 test runs without variability. Contributed by Philippe Antoine (Catena
2939 cyber) in #2681.
2940 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +02002941 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
2942 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +01002943 * Remove the crypto part of the library from Mbed TLS. The crypto
2944 code and tests are now only available via Mbed Crypto, which
2945 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +00002946
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01002947= mbed TLS 2.18.1 branch released 2019-07-12
2948
Jaeden Ameroded319d2019-05-30 13:18:24 +01002949Bugfix
2950 * Fix build failure when building with mingw on Windows by including
2951 stdarg.h where needed. Fixes #2656.
2952
Jaeden Amero3aeb13e2019-06-18 17:27:20 +01002953Changes
2954 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
2955 Ashley Duncan in #2609.
2956
Jaeden Amerob1c72f52019-06-11 17:18:09 +01002957= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002958
Hanno Beckerac4172c2019-01-31 09:27:04 +00002959Features
2960 * Add the Any Policy certificate policy oid, as defined in
2961 rfc 5280 section 4.2.1.4.
2962 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
2963 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +00002964 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
2965 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +00002966 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +00002967 Contributed by Jack Lloyd and Fortanix Inc.
2968 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +00002969 and the used tls-prf.
2970 * Add public API for tls-prf function, according to requested enum.
2971 * Add support for parsing otherName entries in the Subject Alternative Name
2972 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +00002973 as defined in RFC 4108 section 5.
2974 * Add support for parsing certificate policies extension, as defined in
2975 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
2976 supported.
2977 * List all SAN types in the subject_alt_names field of the certificate.
2978 Resolves #459.
2979 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +00002980 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
2981 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +00002982 lifetime of the underlying transport by adding a connection identifier
2983 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05002984 incoming record with the correct connection data even after the peer has
2985 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +00002986 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
2987 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
2988
Paul Bakker5121ce52009-01-03 21:22:43 +00002989
Jaeden Amero4e0db562019-08-27 11:18:28 +01002990API Changes
2991 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
2992 and the used tls-prf.
2993 * Add public API for tls-prf function, according to requested enum.
2994
Paul Bakker5121ce52009-01-03 21:22:43 +00002995Bugfix
2996 * Fix private key DER output in the key_app_writer example. File contents
2997 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
2998 Christian Walther in #2239.
2999 * Fix potential memory leak in X.509 self test. Found and fixed by
3000 Junhwan Park, #2106.
3001 * Reduce stack usage of hkdf tests. Fixes #2195.
3002 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
3003 used with negative inputs. Found by Guido Vranken in #2404. Credit to
3004 OSS-Fuzz.
3005 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
3006 either used both encrypt and decrypt key schedules, or which perform padding.
3007 GCM and CCM were not affected. Fixed by Jack Lloyd.
3008 * Fix incorrect default port number in ssl_mail_client example's usage.
3009 Found and fixed by irwir. #2337
3010 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
3011 Fixed by Peter Kolbus (Garmin). #2579
3012 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +00003013 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
3014 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003015 for the parameter.
3016 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +00003017 sni entry parameter. Reported by inestlerode in #560.
3018 * Set the next sequence of the subject_alt_name to NULL when deleting
3019 sequence on failure. Found and fix suggested by Philippe Antoine.
3020 Credit to OSS-Fuzz.
3021
Paul Bakker5121ce52009-01-03 21:22:43 +00003022Changes
3023 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
3024 mbedTLS configuration only SHA-2 signed certificates are accepted.
3025 This certificate is used in the demo server programs, which lead the
3026 client programs to fail at the peer's certificate verification
3027 due to an unacceptable hash signature. The certificate has been
3028 updated to one that is SHA-256 signed. Fix contributed by
3029 Illya Gerasymchuk.
3030 * Return from various debugging routines immediately if the
3031 provided SSL context is unset.
3032 * Remove dead code from bignum.c in the default configuration.
3033 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
3034 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
3035 Contributed by Peter Kolbus (Garmin).
3036 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
3037 improve clarity. Fixes #2258.
3038
3039= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00003040
3041Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003042 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
3043 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00003044 at the cost of additional lifetime constraints on the input
3045 buffer, but at the benefit of reduced RAM consumption.
3046 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
3047 named bitstring in DER as required by RFC 5280 Appendix B.
3048 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
3049 from the default list (enabled by default). See
3050 https://sweet32.info/SWEET32_CCS16.pdf.
3051
3052API Changes
3053 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003054 See the Features section for more information.
3055 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
3056 for the benefit of saving RAM, by disabling the new compile-time
3057 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
3058 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
3059 always return NULL, and removes the peer_cert field from the
3060 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01003061 certificate.
3062
3063Security
3064 * Make mbedtls_ecdh_get_params return an error if the second key
3065 belongs to a different group from the first. Before, if an application
3066 passed keys that belonged to different group, the first key's data was
3067 interpreted according to the second group, which could lead to either
3068 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003069 latter case, this could expose at most 5 bits of the private key.
3070
3071Bugfix
3072 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
3073 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
3074 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
3075 Raised as a comment in #1996.
3076 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
3077 previously lead to a stack overflow on constrained targets.
3078 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
3079 in the header files, which missed the precompilation check. #971
3080 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
3081 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00003082 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
3083 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02003084 * Fix signed-to-unsigned integer conversion warning
3085 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06003086 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
3087 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01003088 * Fix false failure in all.sh when backup files exist in include/mbedtls
3089 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
3090 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
3091 mbedtls_asn1_write_bitstring().
3092 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
3093 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00003094 correctly as trailing zeroes were not accounted for as unused bits in the
3095 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00003096
3097Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003098 * Reduce RAM consumption during session renegotiation by not storing
3099 the peer CRT chain and session ticket twice.
3100 * Include configuration file in all header files that use configuration,
3101 instead of relying on other header files that they include.
3102 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05003103 * Add support for alternative CSR headers, as used by Microsoft and defined
3104 in RFC 7468. Found by Michael Ernst. Fixes #767.
3105 * Correct many misspellings. Fixed by MisterDA #2371.
3106 * Provide an abstraction of vsnprintf to allow alternative implementations
3107 for platforms that don't provide it. Based on contributions by Joris Aerts
3108 and Nathaniel Wesley Filardo.
3109 * Fix clobber list in MIPS assembly for large integer multiplication.
3110 Previously, this could lead to functionally incorrect assembly being
3111 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01003112 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
3113 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01003114 * Reduce the complexity of the timing tests. They were assuming more than the
3115 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01003116 * Fix configuration queries in ssl-opt.h. #2030
3117 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00003118 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
3119 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003120 * Ciphersuites based on 3DES now have the lowest priority by default when
3121 they are enabled.
3122
3123= mbed TLS 2.16.0 branch released 2018-12-21
3124
3125Features
3126 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
3127 of parameters in the API. This allows detection of obvious misuses of the
3128 API, such as passing NULL pointers. The API of existing functions hasn't
3129 changed, but requirements on parameters have been made more explicit in
3130 the documentation. See the corresponding API documentation for each
3131 function to see for which parameter values it is defined. This feature is
3132 disabled by default. See its API documentation in config.h for additional
3133 steps you have to take when enabling it.
3134
3135API Changes
3136 * The following functions in the random generator modules have been
3137 deprecated and replaced as shown below. The new functions change
3138 the return type from void to int to allow returning error codes when
3139 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
3140 primitive. Fixes #1798.
3141 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
3142 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
3143 * Extend ECDH interface to enable alternative implementations.
3144 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
3145 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
3146 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
3147 * Additional parameter validation checks have been added for the following
3148 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
3149 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
3150 Where modules have had parameter validation added, existing parameter
3151 checks may have changed. Some modules, such as Chacha20 had existing
3152 parameter validation whereas other modules had little. This has now been
3153 changed so that the same level of validation is present in all modules, and
3154 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
3155 is off. That means that checks which were previously present by default
3156 will no longer be.
3157
3158New deprecations
3159 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
3160 in favor of functions that can return an error code.
3161
3162Bugfix
3163 * Fix for Clang, which was reporting a warning for the bignum.c inline
3164 assembly for AMD64 targets creating string literals greater than those
3165 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
3166 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
3167 through qemu user emulation. Reported and fix suggested by randombit
3168 in #1212. Fixes #1212.
3169 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
3170 This could lead to a buffer overflow, but only in case ticket authentication
3171 was broken. Reported and fix suggested by Guido Vranken in #659.
3172 * Add explicit integer to enumeration type casts to example program
3173 programs/pkey/gen_key which previously led to compilation failure
3174 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
3175 * Fix double initialization of ECC hardware that made some accelerators
3176 hang.
3177 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05003178 of check for certificate/key matching. Reported by Attila Molnar, #507.
3179
3180 = mbed TLS 2.15.1 branch released 2018-11-30
3181
3182 Changes
3183 * Update the Mbed Crypto submodule to version 0.1.0b2.
3184
3185 = mbed TLS 2.15.0 branch released 2018-11-23
3186
3187 Features
3188 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
3189 Mbed Crypto as the source of the cryptography implementation.
3190 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
3191 the PSA Crypto API from Mbed Crypto when additionally used with the
3192 USE_CRYPTO_SUBMODULE build option.
3193
3194 Changes
3195 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003196 from the cipher abstraction layer. Fixes #2198.
3197
3198= mbed TLS 2.14.1 branch released 2018-11-30
3199
3200Security
3201 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
3202 decryption that could lead to a Bleichenbacher-style padding oracle
3203 attack. In TLS, this affects servers that accept ciphersuites based on
3204 RSA decryption (i.e. ciphersuites whose name contains RSA but not
3205 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
3206 (University of Adelaide), Daniel Genkin (University of Michigan),
3207 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
3208 (University of Adelaide, Data61). The attack is described in more detail
3209 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
3210 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
3211 via branching and memory access patterns. An attacker who could submit
3212 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
3213 of the decryption and not its result could nonetheless decrypt RSA
3214 plaintexts and forge RSA signatures. Other asymmetric algorithms may
3215 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
3216 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
3217 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
3218 modules.
3219
3220API Changes
3221 * The new functions mbedtls_ctr_drbg_update_ret() and
3222 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
3223 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05003224 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00003225 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003226
Hanno Beckerd3445da2018-11-02 09:36:45 +00003227= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00003228
Simon Butcherb35e59d2018-11-19 15:49:26 +00003229Security
Simon Butcher681edee2018-11-07 16:25:38 +00003230 * Fix overly strict DN comparison when looking for CRLs belonging to a
3231 particular CA. This previously led to ignoring CRLs when the CRL's issuer
3232 name and the CA's subject name differed in their string encoding (e.g.,
3233 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01003234 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00003235 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01003236 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00003237 incoming message buffer was placed within the first 64KiB of address
3238 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003239 to trigger a memory access up to 64KiB beyond the incoming message buffer,
3240 potentially leading to an application crash or information disclosure.
3241 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
3242 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00003243 adversary to construct non-primes that would be erroneously accepted as
3244 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003245 security of TLS, but can matter in other contexts with numbers chosen
3246 potentially by an adversary that should be prime and can be validated.
3247 For example, the number of rounds was enough to securely generate RSA key
3248 pairs or Diffie-Hellman parameters, but was insufficient to validate
3249 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00003250 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003251 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02003252
Simon Butcherb35e59d2018-11-19 15:49:26 +00003253Features
3254 * Add support for temporarily suspending expensive ECC computations after
3255 some configurable amount of operations. This is intended to be used in
3256 constrained, single-threaded systems where ECC is time consuming and can
3257 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02003258 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
3259 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
3260 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
3261 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00003262 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
3263 including client authentication).
3264 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
3265 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00003266 MPI multiplications used in ECC and RSA cryptography. Contributed by
3267 Aurelien Jarno.
3268 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
3269 signature always used a salt with the same length as the hash, and returned
3270 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00003271 shorter. This allows the library to support all hash and signature sizes
3272 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02003273 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00003274 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003275
3276API Changes
3277 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
3278 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00003279 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03003280 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003281
3282New deprecations
3283 * All module specific errors following the form
3284 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00003285 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00003286 platform error.
3287 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01003288 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
3289 by the equivalent plaform error.
3290 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03003291 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01003292 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00003293
3294Bugfix
3295 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
3296 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01003297 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
3298 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01003299 * Fix a bug in the update function for SSL ticket keys which previously
3300 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01003301 * Fix failure in hmac_drbg in the benchmark sample application, when
3302 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
3303 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01003304 which lead to accepting properly authenticated but improperly
3305 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00003306 * Fix memory leak and freeing without initialization in the example
3307 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01003308 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
3309 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
3310 * Zeroize memory used for buffering or reassembling handshake messages
3311 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00003312 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
3313 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
3314 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00003315 UTF8String. Previously, the use of the PrintableString format led to
3316 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01003317 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
3318 Thomas-Dee.
3319 * Fix compilation failure for configurations which use compile time
3320 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01003321 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
3322 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01003323
Simon Butcherc86993e2018-09-27 09:48:54 +01003324Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02003325 * Removed support for Yotta as a build tool.
3326 * Add tests for session resumption in DTLS.
3327 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01003328 test the handling of large packets and small packets on the client side
3329 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01003330 * Change the dtls_client and dtls_server samples to work by default over
3331 IPv6 and optionally by a build option over IPv4.
3332 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00003333 calls, rather than Win32 API calls directly. This is necessary to avoid
3334 conflict with C runtime usage. Found and fixed by irwir.
3335 * Remember the string format of X.509 DN attributes when replicating
3336 X.509 DNs. Previously, DN attributes were always written in their default
3337 string format (mostly PrintableString), which could lead to CRTs being
3338 created which used PrintableStrings in the issuer field even though the
3339 signing CA used UTF8Strings in its subject field; while X.509 compliant,
3340 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00003341 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
3342 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01003343 * Improve documentation of mbedtls_ssl_get_verify_result().
3344 Fixes #517 reported by github-monoculture.
3345 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01003346 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01003347 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01003348
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003349= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01003350
Hanno Becker921b76d2018-09-05 16:21:36 +01003351API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003352 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01003353 whose implementation should behave as a thread-safe version of gmtime().
3354 This allows users to configure such an implementation at compile time when
3355 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01003356 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01003357 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01003358
3359Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01003360 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01003361 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003362
k-stachowiak21feae52018-07-09 14:42:35 +02003363= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02003364
3365Security
3366 * Fix an issue in the X.509 module which could lead to a buffer overread
3367 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02003368 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02003369 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02003370
3371Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02003372 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02003373 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02003374 with the peer, as well as by a new per-connection MTU option, set using
3375 mbedtls_ssl_set_mtu().
3376 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003377 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
3378 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01003379 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01003380 enabled by default.
3381 * Add support for buffering out-of-order handshake messages in DTLS.
3382 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003383 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
3384 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01003385
Hanno Beckerd87a59c2018-08-14 16:34:55 +01003386API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02003387 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02003388 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01003389
3390Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02003391 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
3392 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01003393 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
3394 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03003395 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03003396 Fix contributed by Espressif Systems.
3397 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01003398 This improves compliance to RFC 4492, and as a result, solves
3399 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01003400 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01003401 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01003402 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
3403 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
3404 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
3405 with TLS versions 1.1 and earlier when the server requested authentication
3406 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01003407 check in parsing the CertificateRequest message,
3408 introduced in Mbed TLS 2.12.0. Fixes #1954.
3409 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01003410 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
3411 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01003412 * Fix undefined shifts with negative values in certificates parsing
3413 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01003414 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02003415 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01003416 * Remove redundant else statement. Raised by irwir. Fixes #1776.
3417
3418Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01003419 * Copy headers preserving timestamps when doing a "make install".
3420 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01003421 * Allow the forward declaration of public structs. Contributed by Dawid
3422 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01003423 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01003424 CCM test vectors from RAM.
3425 * Add support for buffering of out-of-order handshake messages.
3426 * Add warnings to the documentation of the HKDF module to reduce the risk
3427 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003428 functions. Fixes #1775. Reported by Brian J. Murray.
3429
Gilles Peskine104d8582018-06-27 10:57:33 +02003430= mbed TLS 2.12.0 branch released 2018-07-25
3431
3432Security
3433 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
3434 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
3435 partially recover the plaintext of messages under some conditions by
3436 exploiting timing measurements. With DTLS, the attacker could perform
3437 this recovery by sending many messages in the same connection. With TLS
3438 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
3439 worked if the same secret (for example a HTTP Cookie) has been repeatedly
3440 sent over connections manipulated by the attacker. Connections using GCM
3441 or CCM instead of CBC, using hash sizes other than SHA-384, or using
3442 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
3443 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02003444 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
3445 Shamir.
3446 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02003447 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01003448 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02003449 plaintext of messages under some conditions by using a cache attack
3450 targeting an internal MD/SHA buffer. With TLS or if
3451 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
3452 the same secret (for example a HTTP Cookie) has been repeatedly sent over
3453 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02003454 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
3455 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
3456 * Add a counter-measure against a vulnerability in TLS ciphersuites based
3457 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
3458 execute code on the local machine as well as manipulate network packets,
3459 to partially recover the plaintext of messages under some conditions (see
3460 previous entry) by using a cache attack targeting the SSL input record
3461 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02003462 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02003463 Eyal Ronen and Adi Shamir.
3464
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02003465Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003466 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02003467 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01003468 by Daniel King.
3469 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01003470 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
3471 Contributed by Augustin Cavalier.
3472 * Make the receive and transmit buffers independent sizes, for situations
3473 where the outgoing buffer can be fixed at a smaller size than the incoming
3474 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03003475 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003476 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02003477 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01003478 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
3479
3480Bugfix
niisatob7d39db2018-06-25 20:44:57 +09003481 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09003482 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01003483 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003484 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01003485 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
3486 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01003487 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
3488 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01003489 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
3490 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03003491 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
3492 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003493 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
3494 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01003495 * Added length checks to some TLS parsing functions. Found and fixed by
3496 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03003497 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03003498 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01003499 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
3500 the `#include` in the header files. Resolves #857
3501 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01003502 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
3503 Drozd. #1098
3504 * Fix decryption for zero length messages (which contain all padding) when a
3505 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
3506 such a message was wrongly reported as an invalid record and therefore lead
3507 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01003508 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
3509 contributed by Espressif Systems. Fixes #1632
3510 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003511 when the request_size argument is set to 0 as stated in the documentation.
3512 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01003513 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01003514 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003515 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01003516
3517Changes
3518 * Fail when receiving a TLS alert message with an invalid length, or invalid
3519 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
3520 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003521 when calling with a NULL salt and non-zero salt_len. Contributed by
3522 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00003523 * Change the shebang line in Perl scripts to look up perl in the PATH.
3524 Contributed by fbrosson.
3525 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01003526 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02003527 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
3528
3529= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01003530
3531Features
3532 * Add additional block mode, OFB (Output Feedback), to the AES module and
3533 cipher abstraction module.
3534 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01003535 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
3536 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02003537 * Add support for the XTS block cipher mode with AES (AES-XTS).
3538 Contributed by Aorimn in pull request #414.
3539 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01003540 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01003541 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01003542
3543Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01003544 * Fix the cert_write example to handle certificates signed with elliptic
3545 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01003546 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
3547 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01003548 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01003549 Reported by rahmanih in #683
3550 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
3551
Simon Butcherb6a5bff2018-06-18 11:51:36 +01003552Changes
3553 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
3554 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02003555 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01003556 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003557
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01003558= mbed TLS 2.10.0 branch released 2018-06-06
3559
3560Features
3561 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02003562 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00003563
3564API Changes
3565 * Extend the platform module with a util component that contains
3566 functionality shared by multiple Mbed TLS modules. At this stage
3567 platform_util.h (and its associated platform_util.c) only contain
3568 mbedtls_platform_zeroize(), which is a critical function from a security
3569 point of view. mbedtls_platform_zeroize() needs to be regularly tested
3570 against compilers to ensure that calls to it are not removed from the
3571 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01003572 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01003573 facilitate testing and maintenance.
3574
3575Bugfix
3576 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01003577 build to fail. Found by zv-io. Fixes #1651.
3578
Moran Pekera64fba42018-02-25 13:29:03 +02003579Changes
3580 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01003581 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01003582 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02003583
Simon Butcherf85c90a2017-07-27 15:11:52 +01003584= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01003585
3586Security
3587 * Fix an issue in the X.509 module which could lead to a buffer overread
3588 during certificate validation. Additionally, the issue could also lead to
3589 unnecessary callback checks being made or to some validation checks to be
3590 omitted. The overread could be triggered remotely, while the other issues
3591 would require a non DER-compliant certificate to be correctly signed by a
3592 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
3593 luocm. Fixes #825.
3594 * Fix the buffer length assertion in the ssl_parse_certificate_request()
3595 function which led to an arbitrary overread of the message buffer. The
3596 overreads could be caused by receiving a malformed message at the point
3597 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04003598 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01003599 data is output with the debug data.
3600 * Fix a client-side bug in the validation of the server's ciphersuite choice
3601 which could potentially lead to the client accepting a ciphersuite it didn't
3602 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003603 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01003604 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01003605
3606Features
3607 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01003608 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
3609 Suggested and contributed by jkivilin in pull request #394.
3610 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01003611 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01003612 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
3613 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01003614
3615API Changes
3616 * Extend the public API with the function of mbedtls_net_poll() to allow user
3617 applications to wait for a network context to become ready before reading
3618 or writing.
3619 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02003620 a check for whether more more data is pending to be processed in the
3621 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01003622 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00003623 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01003624
Gilles Peskine08185402018-03-22 21:50:48 +01003625Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01003626 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
3627 contributed by Brian J Murray and David Brown.
3628 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01003629 in configurations that omit certain hashes or public-key algorithms.
3630 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02003631 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01003632 #1353
3633 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
3634 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
3635 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08003636 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01003637 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07003638 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01003639 unable to parse keys which had only the optional parameters field of the
3640 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
3641 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02003642 stated in the mbedtls_cipher_update() documentation. Contributed by
3643 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01003644 * Fix overriding and ignoring return values when parsing and writing to
3645 a file in pk_sign program. Found by kevlut in #1142.
3646 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
3647 where data needs to be fetched from the underlying transport in order
3648 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01003649 returned when unexpected messages were being discarded, ignoring that
3650 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02003651 in the internal buffers; these cases led to deadlocks when event-driven
3652 I/O was used. Found and reported by Hubert Mis in #772.
3653 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04003654 function which leads to a potential one byte overread of the message
3655 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01003656 * Fix invalid buffer sizes passed to zlib during record compression and
3657 decompression.
3658 * Fix the soversion of libmbedcrypto to match the soversion of the
3659 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01003660 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003661 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
3662
Simon Butcherb03120a2018-04-30 16:40:25 +01003663Changes
3664 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01003665 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
3666 independently by Matthieu Volat and Arne Schwabe.
3667 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00003668 public-key algorithms. Includes contributions by Gert van Dijk.
3669 * Improve negative testing of X.509 parsing.
3670 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01003671 configurations where the feature is disabled. Found and fixed by Gergely
3672 Budai.
3673 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
3674 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01003675 instead incorrectly manipulates the configuration structure directly.
3676 Found and fix submitted by junyeonLEE in #1220.
3677 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02003678 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
3679 without PBES2. Fixed by Marcos Del Sol Vives.
3680 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01003681 for Curve25519 (other curves had it already). Contributed by Nicholas
3682 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01003683 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
3684 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01003685 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01003686 Paul Sokolovsky in #1356.
3687 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01003688 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01003689 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01003690 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02003691 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02003692 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
3693 by Alexey Skalozub in #405.
3694 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02003695 transmitting more than the required length, return an error. Raised by
3696 Sam O'Connor in #1245.
3697 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01003698 HMAC functions with non-HMAC ciphersuites. Independently contributed
3699 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02003700 * Improve security of RSA key generation by including criteria from
3701 FIPS 186-4. Contributed by Jethro Beekman. #1380
3702 * Declare functions in header files even when an alternative implementation
3703 of the corresponding module is activated by defining the corresponding
3704 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04003705 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01003706 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00003707 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01003708
Gilles Peskine04f9bd02018-02-22 15:22:44 +01003709= mbed TLS 2.8.0 branch released 2018-03-16
3710
Thomas Daubneyd596e992021-06-18 11:50:56 +01003711Default behavior changes
3712 * The truncated HMAC extension now conforms to RFC 6066. This means
3713 that when both sides of a TLS connection negotiate the truncated
3714 HMAC extension, Mbed TLS can now interoperate with other
3715 compliant implementations, but this breaks interoperability with
3716 prior versions of Mbed TLS. To restore the old behavior, enable
3717 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
3718 config.h. Found by Andreas Walz (ivESK, Offenburg University of
3719 Applied Sciences).
3720
Hanno Becker7dc832b2017-11-16 17:39:34 +00003721Security
Gilles Peskine04f9bd02018-02-22 15:22:44 +01003722 * Fix implementation of the truncated HMAC extension. The previous
3723 implementation allowed an offline 2^80 brute force attack on the
3724 HMAC key of a single, uninterrupted connection (with no
3725 resumption of the session).
Gilles Peskine553a06f2018-03-13 17:15:34 +01003726 * Verify results of RSA private key operations to defend
3727 against Bellcore glitch attack.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01003728 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
3729 a crash on invalid input.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01003730 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
3731 crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01003732 * Fix CRL parsing to reject CRLs containing unsupported critical
3733 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
Hanno Becker7dc832b2017-11-16 17:39:34 +00003734
Antonio Quartulli12ccef22017-12-20 07:03:55 +08003735Features
3736 * Extend PKCS#8 interface by introducing support for the entire SHA
3737 algorithms family when encrypting private keys using PKCS#5 v2.0.
Gilles Peskine1d80a672018-02-14 11:33:30 +01003738 This allows reading encrypted PEM files produced by software that
3739 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
3740 OpenVPN Inc. Fixes #1339
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01003741 * Add support for public keys encoded in PKCS#1 format. #1122
Antonio Quartulli12ccef22017-12-20 07:03:55 +08003742
Hanno Beckercf092b22018-03-06 14:23:38 +00003743New deprecations
3744 * Deprecate support for record compression (configuration option
3745 MBEDTLS_ZLIB_SUPPORT).
3746
Gilles Peskine27b07542018-02-14 14:07:48 +01003747Bugfix
3748 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
3749 Fixes #1358.
Gilles Peskine1e3fd692018-02-14 15:12:49 +01003750 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Ron Eldor099e61d2018-02-06 17:34:27 +02003751 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
3752 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Gilles Peskine1bf61232018-02-27 08:37:52 +01003753 In the context of SSL, this resulted in handshake failure. Reported by
3754 daniel in the Mbed TLS forum. #1351
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00003755 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
Gilles Peskineb4c571e2018-03-11 00:44:14 +01003756 * Fix setting version TLSv1 as minimal version, even if TLS 1
3757 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
3758 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
3759 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldor2f73c932017-09-26 15:06:56 +03003760 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
3761 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
Ron Eldorbc18eb32017-09-06 17:49:10 +03003762 Nick Wilson on issue #355
Gilles Peskine08af5382018-03-11 00:15:56 +01003763 * In test_suite_pk, pass valid parameters when testing for hash length
itayzafrir693a1d92018-02-26 12:02:10 +02003764 overflow. #1179
Gilles Peskinea31d8202018-03-12 23:45:08 +01003765 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
3766 by Guido Vranken. #639
Gilles Peskine3ff4a072018-03-12 23:54:20 +01003767 * Log correct number of ciphersuites used in Client Hello message. #918
Gilles Peskine5f193282018-03-13 17:18:06 +01003768 * Fix X509 CRT parsing that would potentially accept an invalid tag when
3769 parsing the subject alternative names.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01003770 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
3771 that could cause a key exchange to fail on valid data.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01003772 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
3773 could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01003774 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
3775 MBEDTLS_DEPRECATED_REMOVED. #1388
Sanne Woudacf793122017-09-07 16:33:44 +01003776 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
3777 Found through fuzz testing.
Gilles Peskine27b07542018-02-14 14:07:48 +01003778
3779Changes
3780 * Fix tag lengths and value ranges in the documentation of CCM encryption.
3781 Contributed by Mathieu Briand.
Gilles Peskine5daa7652018-02-14 14:10:24 +01003782 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
Gilles Peskinedf298682018-02-14 15:49:54 +01003783 * Remove support for the library reference configuration for picocoin.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01003784 * MD functions deprecated in 2.7.0 are no longer inline, to provide
3785 a migration path for those depending on the library's ABI.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02003786 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine6dc4a312018-03-13 00:13:06 +01003787 * Use (void) when defining functions with no parameters. Contributed by
3788 Joris Aerts. #678
Gilles Peskine27b07542018-02-14 14:07:48 +01003789
Simon Butcher55fc4e02018-02-05 01:09:13 +00003790= mbed TLS 2.7.0 branch released 2018-02-03
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003791
Gilles Peskine28a0c722017-10-17 19:01:38 +02003792Security
Simon Butcher55fc4e02018-02-05 01:09:13 +00003793 * Fix a heap corruption issue in the implementation of the truncated HMAC
3794 extension. When the truncated HMAC extension is enabled and CBC is used,
3795 sending a malicious application packet could be used to selectively corrupt
3796 6 bytes on the peer's heap, which could potentially lead to crash or remote
3797 code execution. The issue could be triggered remotely from either side in
3798 both TLS and DTLS. CVE-2018-0488
3799 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
3800 for the key size, which could potentially lead to crash or remote code
3801 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
3802 Qualcomm Technologies Inc. CVE-2018-0487
3803 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
3804 zeros.
3805 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
3806 64 KiB to the address of the SSL buffer and causing a wrap around.
3807 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
Hanno Becker930025d2017-09-18 16:07:19 +01003808 default enabled) maximum fragment length extension is disabled in the
3809 config and the application data buffer passed to mbedtls_ssl_write
3810 is larger than the internal message buffer (16384 bytes by default), the
3811 latter overflows. The exploitability of this issue depends on whether the
3812 application layer can be forced into sending such large packets. The issue
3813 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
Simon Butcher55fc4e02018-02-05 01:09:13 +00003814 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
3815 Fixes #707.
3816 * Add a provision to prevent compiler optimizations breaking the time
3817 constancy of mbedtls_ssl_safer_memcmp().
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01003818 * Ensure that buffers are cleared after use if they contain sensitive data.
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01003819 Changes were introduced in multiple places in the library.
Ron Eldor31162e42017-09-05 15:34:35 +03003820 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
3821 being leaked to memory after release.
Janos Follathb174c842017-09-20 16:26:04 +01003822 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
3823 leaking 1 bit of the private key. Reported by prashantkspatil.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003824 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
3825 data. Previously, trailing zero bytes were detected and omitted for the
3826 sake of saving memory, but potentially leading to slight timing
3827 differences. Reported by Marco Macchetti, Kudelski Group.
Hanno Becker509fef72017-10-19 10:10:18 +01003828 * Wipe stack buffer temporarily holding EC private exponent
3829 after keypair generation.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003830 * Fix a potential heap buffer over-read in ALPN extension parsing
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01003831 (server-side). Could result in application crash, but only if an ALPN
3832 name larger than 16 bytes had been configured on the server.
Hanno Becker0cd5b942017-10-13 17:17:28 +01003833 * Change default choice of DHE parameters from untrustworthy RFC 5114
3834 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
3835 manner.
Gilles Peskine28a0c722017-10-17 19:01:38 +02003836
Gilles Peskineb04e2c32017-09-29 15:45:12 +02003837Features
3838 * Allow comments in test data files.
Gilles Peskinec82fbb42017-12-15 15:01:27 +01003839 * The selftest program can execute a subset of the tests based on command
3840 line arguments.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02003841 * New unit tests for timing. Improve the self-test to be more robust
3842 when run on a heavily-loaded machine.
Gilles Peskine618d0912018-01-02 16:04:19 +01003843 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Jaeden Amero91d49e82018-01-11 16:35:44 +00003844 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Jaeden Amero15263302017-09-21 12:53:48 +01003845 * Add support for alternative implementations of GCM, selected by the
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01003846 configuration flag MBEDTLS_GCM_ALT.
Ron Eldor314adb62017-10-10 18:28:25 +03003847 * Add support for alternative implementations for ECDSA, controlled by new
3848 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
3849 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03003850 The following functions from the ECDSA module can be replaced
Ron Eldor314adb62017-10-10 18:28:25 +03003851 with alternative implementation:
Ron Eldor2981a0a2017-09-24 15:41:09 +03003852 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Hanno Becker087d5ad2018-01-24 16:06:25 +00003853 * Add support for alternative implementation of ECDH, controlled by the
3854 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
Ron Eldora84c1cb2017-10-10 19:04:27 +03003855 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
Ron Eldor8b766212017-09-24 15:44:56 +03003856 The following functions from the ECDH module can be replaced
3857 with an alternative implementation:
3858 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Hanno Becker087d5ad2018-01-24 16:06:25 +00003859 * Add support for alternative implementation of ECJPAKE, controlled by
3860 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003861 * Add mechanism to provide alternative implementation of the DHM module.
Gilles Peskine26182ed2017-09-29 15:45:12 +02003862
Hanno Beckera47023e2017-12-22 17:08:03 +00003863API Changes
3864 * Extend RSA interface by multiple functions allowing structure-
3865 independent setup and export of RSA contexts. Most notably,
Simon Butcher55fc4e02018-02-05 01:09:13 +00003866 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
Hanno Beckera47023e2017-12-22 17:08:03 +00003867 up RSA contexts from partial key material and having them completed to the
3868 needs of the implementation automatically. This allows to setup private RSA
3869 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
3870 purpose or CRT and/or blinding.
3871 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
3872 implementations of the RSA interface declared in rsa.h.
Gilles Peskine0a969102018-01-22 14:55:20 +01003873 * The following functions in the message digest modules (MD2, MD4, MD5,
3874 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
3875 The new functions change the return type from void to int to allow
3876 returning error codes when using MBEDTLS_<MODULE>_ALT.
3877 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
3878 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
3879 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01003880 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02003881
Ron Eldor73a38172017-10-03 15:58:26 +03003882New deprecations
3883 * Deprecate usage of RSA primitives with non-matching key-type
Simon Butcher55fc4e02018-02-05 01:09:13 +00003884 (e.g. signing with a public key).
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01003885 * Direct manipulation of structure fields of RSA contexts is deprecated.
3886 Users are advised to use the extended RSA API instead.
Jaeden Amero005239e2018-01-25 14:47:39 +00003887 * Deprecate usage of message digest functions that return void
3888 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
3889 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
3890 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
3891 that can return an error code.
Hanno Becker0cd5b942017-10-13 17:17:28 +01003892 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
3893 parameters from RFC 3526 or the newly added parameters from RFC 7919.
3894 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
3895 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
3896 etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003897 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
3898 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Hanno Becker0cd5b942017-10-13 17:17:28 +01003899 accepting DHM parameters in binary form, matching the new constants.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003900
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003901Bugfix
3902 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
3903 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher2c4f9462017-09-30 23:39:46 +01003904 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Simon Butcherb03120a2018-04-30 16:40:25 +01003905 Found by projectgus and Jethro Beekman, #836.
Simon Butcher16373a52017-10-02 19:12:54 +01003906 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
Ron Eldor73a38172017-10-03 15:58:26 +03003907 * Parse signature algorithm extension when renegotiating. Previously,
3908 renegotiated handshakes would only accept signatures using SHA-1
3909 regardless of the peer's preferences, or fail if SHA-1 was disabled.
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00003910 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
3911 dates on leap years with 100 and 400 intervals are handled correctly. Found
3912 by Nicholas Wilson. #694
Gilles Peskine91048a32017-10-19 17:46:14 +02003913 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
3914 accepted. Generating these signatures required the private key.
Gilles Peskinee7707222017-11-24 15:35:50 +01003915 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
3916 Found independently by Florian in the mbed TLS forum and by Mishamax.
3917 #878, #1019.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01003918 * Fix variable used before assignment compilation warnings with IAR
3919 toolchain. Found by gkerrien38.
Andres AG51a7ae12017-02-22 16:23:26 +00003920 * Fix unchecked return codes from AES, DES and 3DES functions in
3921 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
3922 If a call to one of the functions of the cryptographic primitive modules
3923 failed, the error may not be noticed by the function
3924 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
3925 Guido Vranken. #756
Gilles Peskine4b117d92017-11-28 17:23:37 +01003926 * Include configuration file in md.h, to fix compilation warnings.
3927 Reported by aaronmdjones in #1001
Hanno Becker041a6b02017-09-28 14:52:26 +01003928 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
3929 writing routines that prevented these functions to work with alternative
3930 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Hanno Becker86e52302017-10-05 09:08:53 +01003931 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
3932 non-v3 CRT's.
Gilles Peskined742b742017-11-28 17:40:56 +01003933 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00003934 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01003935 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003936 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Hanno Becker479e8e22017-10-12 15:39:45 +01003937 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003938 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Darryl Green36ba8b62017-11-21 09:55:33 +00003939 Reported by Yolan Romailler.
Gilles Peskineff01e002017-12-01 23:42:17 +01003940 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
Gilles Peskined6294112017-12-01 23:46:58 +01003941 * Fix incorrect unit in benchmark output. #850
Hanno Becker81e96dd2017-09-18 11:07:25 +01003942 * Add size-checks for record and handshake message content, securing
3943 fragile yet non-exploitable code-paths.
Ron Eldore1a9a4a2017-10-17 18:15:41 +03003944 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
3945 MilenkoMitrovic, #1104
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01003946 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003947 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Gilles Peskineec9c6262018-01-02 16:27:50 +01003948 * Fix possible memory leaks in mbedtls_gcm_self_test().
3949 * Added missing return code checks in mbedtls_aes_self_test().
Hanno Becker997e2182018-01-10 10:39:20 +00003950 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
3951 RSA test suite where the failure of CTR DRBG initialization lead to
3952 freeing an RSA context and several MPI's without proper initialization
3953 beforehand.
Gilles Peskine980d2032018-01-22 23:10:53 +01003954 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01003955 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
3956 Found and fixed by Martijn de Milliano.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003957 * Fix an issue in the cipher decryption with the mode
3958 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
3959 Note, this padding mode is not used by the TLS protocol. Found and fixed by
3960 Micha Kraus.
Gilles Peskined91f2a22018-01-19 11:25:10 +01003961 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
3962 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
3963 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
3964 mbedtls_sha512_init() is called before operating on the relevant context
Gilles Peskine0a969102018-01-22 14:55:20 +01003965 structure. Do not assume that zeroizing a context is a correct way to
3966 reset it. Found independently by ccli8 on Github.
3967 * In mbedtls_entropy_free(), properly free the message digest context.
Simon Butcher55fc4e02018-02-05 01:09:13 +00003968 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
3969 and fixed by muddog.
Hanno Becker86e52302017-10-05 09:08:53 +01003970
3971Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00003972 * Extend cert_write example program by options to set the certificate version
Hanno Becker86e52302017-10-05 09:08:53 +01003973 and the message digest. Further, allow enabling/disabling of authority
3974 identifier, subject identifier and basic constraints extensions.
Hanno Becker32297e82017-12-22 10:24:32 +00003975 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
3976 particular, don't require P,Q if neither CRT nor blinding are
3977 used. Reported and fix proposed independently by satur9nine and sliai
3978 on GitHub.
Gilles Peskineec9c6262018-01-02 16:27:50 +01003979 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine50984002018-01-17 08:01:37 +01003980 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
3981 undeclared dependency of the RSA module on the ASN.1 module.
Gilles Peskine0a969102018-01-22 14:55:20 +01003982 * Update all internal usage of deprecated message digest functions to the
3983 new ones with return codes. In particular, this modifies the
3984 mbedtls_md_info_t structure. Propagate errors from these functions
3985 everywhere except some locations in the ssl_tls.c module.
Jaeden Amero791e08a2018-01-26 12:04:12 +00003986 * Improve CTR_DRBG error handling by propagating underlying AES errors.
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01003987 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
3988 modules where the software implementation can be replaced by a hardware
3989 implementation.
Hanno Becker2a037942017-10-06 12:29:50 +01003990 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
3991 throughout the library.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01003992
Simon Butcher72ea31b2017-08-10 11:51:16 +01003993= mbed TLS 2.6.0 branch released 2017-08-10
Ron Eldord5a75f42016-12-16 16:15:56 +02003994
Simon Butcherb060cc22017-07-28 01:04:34 +01003995Security
Simon Butcher01971d02017-08-10 10:48:01 +01003996 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcherf85c90a2017-07-27 15:11:52 +01003997 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
3998 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher01971d02017-08-10 10:48:01 +01003999 (default: 8) intermediates, even when it was not trusted. This could be
4000 triggered remotely from either side. (With authmode set to 'required'
Simon Butcher3f2557e2017-08-01 18:06:12 +01004001 (the default), the handshake was correctly aborted).
4002 * Reliably wipe sensitive data after use in the AES example applications
Hanno Becker7ec83df2017-06-27 08:26:53 +01004003 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
4004 Found by Laurent Simon.
Simon Butcherf85c90a2017-07-27 15:11:52 +01004005
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01004006Features
4007 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01004008 and the context struct mbedtls_platform_context to perform
4009 platform-specific setup and teardown operations. The macro
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01004010 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
Simon Butcher3f2557e2017-08-01 18:06:12 +01004011 by the user in a platform_alt.h file. These new functions are required in
Simon Butcher01971d02017-08-10 10:48:01 +01004012 some embedded environments to provide a means of initialising underlying
4013 cryptographic acceleration hardware.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01004014
Simon Butcherab670432017-07-20 12:33:41 +02004015API Changes
4016 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
4017 API consistent with mbed TLS 2.5.0. Specifically removed the inline
4018 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcher3f2557e2017-08-01 18:06:12 +01004019 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
4020 by James Cowgill. #978
Simon Butcherf85c90a2017-07-27 15:11:52 +01004021 * Certificate verification functions now set flags to -1 in case the full
4022 chain was not verified due to an internal error (including in the verify
4023 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01004024 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherf85c90a2017-07-27 15:11:52 +01004025 verification of the peer's certificate failed due to an overlong chain or
Simon Butcher01971d02017-08-10 10:48:01 +01004026 a fatal error in the verify callback.
Simon Butcherab670432017-07-20 12:33:41 +02004027
Ron Eldore2efaea2016-12-16 16:15:56 +02004028Bugfix
Simon Butcher01971d02017-08-10 10:48:01 +01004029 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
4030 Reported by roberto. #716
4031 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Ron Eldor63140682017-01-09 19:27:59 +02004032 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
Simon Butcher3f2557e2017-08-01 18:06:12 +01004033 always be implemented by pthread support. #696
Simon Butcher01971d02017-08-10 10:48:01 +01004034 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
4035 in the case of an error. Found by redplait. #590
Ron Eldorca6ff582017-01-12 14:50:50 +02004036 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Simon Butcher3f2557e2017-08-01 18:06:12 +01004037 Reported and fix suggested by guidovranken. #740
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01004038 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
4039 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01004040 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004041 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Simon Butcher5deb5182017-07-26 17:25:55 +01004042 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
4043 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00004044 * Fix potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004045 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Andres AG2e65a542017-02-17 13:54:43 +00004046 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
4047 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01004048 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01004049 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher5deb5182017-07-26 17:25:55 +01004050 constructed certificates to bypass the certificate verification check.
Simon Butchera418e822017-07-28 23:52:10 +01004051 * Fix a call to the libc function time() to call the platform abstraction
Simon Butcher3f2557e2017-08-01 18:06:12 +01004052 function mbedtls_time() instead. Found by wairua. #666
4053 * Avoid shadowing of time and index functions through mbed TLS function
4054 arguments. Found by inestlerode. #557.
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02004055
Janos Follath78b14732017-06-22 10:02:07 +01004056Changes
Janos Follathb85291c2017-06-22 10:02:07 +01004057 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Simon Butcher3f2557e2017-08-01 18:06:12 +01004058 64-bit division. This is useful on embedded platforms where 64-bit division
4059 created a dependency on external libraries. #708
Janos Follath78b14732017-06-22 10:02:07 +01004060 * Removed mutexes from ECP hardware accelerator code. Now all hardware
4061 accelerator code in the library leaves concurrency handling to the
4062 platform. Reported by Steven Cooreman. #863
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01004063 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
4064 config-no-entropy.h to reduce the RAM footprint.
Simon Butcher3f2557e2017-08-01 18:06:12 +01004065 * Added a test script that can be hooked into git that verifies commits
4066 before they are pushed.
Hanno Becker85b602e2017-05-04 11:27:39 +01004067 * Improve documentation of PKCS1 decryption functions.
Janos Follath78b14732017-06-22 10:02:07 +01004068
Simon Butcherf2a597f2017-06-20 23:08:10 +01004069= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckereccf60c2017-06-05 15:19:01 +01004070
Gilles Peskine5e79cb32017-05-04 16:17:21 +02004071Security
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01004072 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
4073 The issue could only happen client-side with renegotiation enabled.
4074 Could result in DoS (application crash) or information leak
4075 (if the application layer sent data read from mbedtls_ssl_read()
4076 back to the server or to a third party). Can be triggered remotely.
Gilles Peskine5d2511c2017-05-12 13:16:40 +02004077 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
4078 certificate verification. SHA-1 can be turned back on with a compile-time
4079 option if needed.
Gilles Peskined50177f2017-05-16 17:53:03 +02004080 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
4081 detect it sometimes. Reported by Hugo Leisink. #810
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02004082 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
4083 potential Bleichenbacher/BERserk-style attack.
Gilles Peskine5e79cb32017-05-04 16:17:21 +02004084
Hanno Beckereccf60c2017-06-05 15:19:01 +01004085Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01004086 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
4087 valid C and they prevented the test from compiling in Visual Studio 2015
4088 and with GCC using the -Wpedantic compilation option.
Hanno Becker7e5437a2017-04-28 17:15:26 +01004089 * Fix insufficient support for signature-hash-algorithm extension,
4090 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Janos Follath5a1c0e72017-06-16 09:00:07 +01004091 * Fix behaviour that hid the original cause of fatal alerts in some cases
4092 when sending the alert failed. The fix makes sure not to hide the error
Gilles Peskine3df98f52017-05-10 17:47:40 +02004093 that triggered the alert.
Janos Follath5a1c0e72017-06-16 09:00:07 +01004094 * Fix SSLv3 renegotiation behaviour and stop processing data received from
4095 peer after sending a fatal alert to refuse a renegotiation attempt.
4096 Previous behaviour was to keep processing data even after the alert has
4097 been sent.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01004098 * Accept empty trusted CA chain in authentication mode
Simon Butcherb03120a2018-04-30 16:40:25 +01004099 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
Janos Follath5a1c0e72017-06-16 09:00:07 +01004100 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
4101 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
4102 reflect bad EC curves within verification result.
4103 * Fix bug that caused the modular inversion function to accept the invalid
4104 modulus 1 and therefore to hang. Found by blaufish. #641.
4105 * Fix incorrect sign computation in modular exponentiation when the base is
4106 a negative MPI. Previously the result was always negative. Found by Guido
4107 Vranken.
4108 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
4109 that was triggered uppon reading an empty line. Found by Guido Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02004110
Gilles Peskine36091fe2017-05-03 16:55:03 +02004111Changes
Janos Follath5a1c0e72017-06-16 09:00:07 +01004112 * Send fatal alerts in more cases. The previous behaviour was to skip
4113 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00004114 * Clarify ECDSA documentation and improve the sample code to avoid
Janos Follath5a1c0e72017-06-16 09:00:07 +01004115 misunderstanding and potentially dangerous use of the API. Pointed out
Janos Follath0a5154b2017-03-10 11:31:41 +00004116 by Jean-Philippe Aumasson.
Gilles Peskine36091fe2017-05-03 16:55:03 +02004117
Simon Butcher9f770172017-05-15 15:13:59 +01004118= mbed TLS 2.5.0 branch released 2017-05-17
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004119
Janos Follath45182a02017-03-23 10:41:56 +00004120Security
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01004121 * Wipe stack buffers in RSA private key operations
Janos Follath5a1c0e72017-06-16 09:00:07 +01004122 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
4123 Simon.
Janos Follath45182a02017-03-23 10:41:56 +00004124 * Add exponent blinding to RSA private operations as a countermeasure
4125 against side-channel attacks like the cache attack described in
4126 https://arxiv.org/abs/1702.08719v2.
4127 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
4128 Clémentine Maurice and Stefan Mangard.
4129
Simon Butcher4775e832017-05-13 22:56:08 +01004130Features
Janos Follath5a1c0e72017-06-16 09:00:07 +01004131 * Add hardware acceleration support for the Elliptic Curve Point module.
4132 This involved exposing parts of the internal interface to enable
4133 replacing the core functions and adding and alternative, module level
4134 replacement support for enabling the extension of the interface.
Janos Follath7a8a0902017-04-10 16:13:06 +01004135 * Add a new configuration option to 'mbedtls_ssl_config' to enable
4136 suppressing the CA list in Certificate Request messages. The default
4137 behaviour has not changed, namely every configured CAs name is included.
4138
Andres AGf5bf7182017-03-03 14:09:56 +00004139API Changes
4140 * The following functions in the AES module have been deprecated and replaced
4141 by the functions shown below. The new functions change the return type from
4142 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
4143 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
4144 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
4145 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
4146
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004147Bugfix
4148 * Remove macros from compat-1.3.h that correspond to deleted items from most
4149 recent versions of the library. Found by Kyle Keen.
Janos Follath5a1c0e72017-06-16 09:00:07 +01004150 * Fixed issue in the Threading module that prevented mutexes from
4151 initialising. Found by sznaider. #667 #843
4152 * Add checks in the PK module for the RSA functions on 64-bit systems.
4153 The PK and RSA modules use different types for passing hash length and
4154 without these checks the type cast could lead to data loss. Found by Guido
4155 Vranken.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01004156
Simon Butcherb65c2be2017-03-10 18:50:44 +00004157= mbed TLS 2.4.2 branch released 2017-03-08
Andres AG703990b2016-10-24 11:23:36 +01004158
Janos Follath182013f2016-10-25 10:50:22 +01004159Security
Simon Butcherb65c2be2017-03-10 18:50:44 +00004160 * Add checks to prevent signature forgeries for very large messages while
4161 using RSA through the PK module in 64-bit systems. The issue was caused by
4162 some data loss when casting a size_t to an unsigned int value in the
4163 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
4164 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
Andres AG939954c2016-12-08 17:08:44 +00004165 * Fixed potential livelock during the parsing of a CRL in PEM format in
4166 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
4167 characters after the footer could result in the execution of an infinite
4168 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
4169 Microsoft.
Janos Follath182013f2016-10-25 10:50:22 +01004170 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
4171 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
Simon Butcher0621b1f2017-02-05 16:48:47 +00004172 Introduced by interoperability fix for #513.
Janos Follath7dadc2f2017-01-27 16:05:20 +00004173 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
4174 when verifying the validity of a key on secp224k1. This could be
4175 triggered remotely for example with a maliciously constructed certificate
Simon Butcher71e9d582017-02-28 18:47:27 +00004176 and potentially could lead to remote code execution on some platforms.
Simon Butcher8b987502017-03-07 12:37:14 +00004177 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
4178 team. #569 CVE-2017-2784
Janos Follath7dadc2f2017-01-27 16:05:20 +00004179
Andres AG703990b2016-10-24 11:23:36 +01004180Bugfix
Andres AGd1650662016-12-09 17:26:23 +00004181 * Fix output certificate verification flags set by x509_crt_verify_top() when
4182 traversing a chain of trusted CA. The issue would cause both flags,
4183 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
4184 set when the verification conditions are not met regardless of the cause.
4185 Found by Harm Verhagen and inestlerode. #665 #561
Simon Butcherd57c8f02017-02-02 13:08:37 +00004186 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
4187 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
4188 Found by omlib-lin. #673
Andres AGc0db5112016-12-07 15:05:53 +00004189 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
4190 x509_csr.c that are reported when building mbed TLS with a config.h that
Simon Butchera333b3c2017-02-02 16:17:37 +00004191 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
Andres AG2196c7f2016-12-15 17:01:16 +00004192 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
4193 would compare 64 bits of the record counter instead of 48 bits as indicated
4194 in RFC 6347 Section 4.3.1. This could cause the execution of the
4195 renegotiation routines at unexpected times when the protocol is DTLS. Found
4196 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01004197 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres AG9c94b692016-10-24 14:31:54 +01004198 the input string in PEM format to extract the different components. Found
Andres AG703990b2016-10-24 11:23:36 +01004199 by Eyal Itkin.
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00004200 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
4201 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
4202 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
4203 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
4204 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
4205 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00004206 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
4207 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00004208 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
4209 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Andres AG5708dcb2016-12-08 17:19:21 +00004210 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
4211 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcherd02dc142017-02-28 16:36:22 +00004212 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
4213 fix proposed by Guido Vranken. #722
Simon Butcher956c58f2017-03-02 09:18:09 +00004214 * Fixed the templates used to generate project and solution files for Visual
4215 Studio 2015 as well as the files themselves, to remove a build warning
4216 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Ron Eldor12e0b802017-01-29 18:51:35 +02004217 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
4218 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
Andres AGd1cc7f62017-01-06 13:17:35 +00004219 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
4220 number to write in hexadecimal is negative and requires an odd number of
4221 digits. Found and fixed by Guido Vranken.
Simon Butcher81cf88f2017-03-07 19:35:49 +00004222 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
4223 by inestlerode. #555
Andres AG703990b2016-10-24 11:23:36 +01004224
Janos Follath4c006cd2016-12-13 14:14:03 +00004225= mbed TLS 2.4.1 branch released 2016-12-13
Janos Follath5da3a6f2016-12-13 11:51:04 +00004226
4227Changes
4228 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
4229 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
4230 Authentication – October 2016
4231
Simon Butcher19dbd412016-10-16 19:35:49 +01004232= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butchercf8c1f42016-09-02 21:29:39 +03004233
Andres AG60dbc932016-09-02 15:23:48 +01004234Security
Simon Butcheref8fa012016-10-16 00:44:08 +01004235 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
4236 with RFC-5116 and could lead to session key recovery in very long TLS
4237 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
4238 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
4239 https://eprint.iacr.org/2016/475.pdf
4240 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Andres AG60dbc932016-09-02 15:23:48 +01004241 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AGe0af9952016-09-07 11:09:44 +01004242 without checking whether there is enough space in the destination. The
Simon Butcheref8fa012016-10-16 00:44:08 +01004243 issue cannot be triggered remotely. Found by Jethro Beekman.
Andres AG60dbc932016-09-02 15:23:48 +01004244
Simon Butchercf8c1f42016-09-02 21:29:39 +03004245Features
Simon Butcher21c54812016-10-05 14:17:37 +01004246 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
4247 NIST SP 800-38B, RFC-4493 and RFC-4615.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004248 * Added hardware entropy selftest to verify that the hardware entropy source
4249 is functioning correctly.
4250 * Added a script to print build environment info for diagnostic use in test
4251 scripts, which is also now called by all.sh.
Andres AGf9113192016-09-02 14:06:04 +01004252 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
4253 configure the maximum length of a file path that can be buffered when
4254 calling mbedtls_x509_crt_parse_path().
Simon Butcheref8fa012016-10-16 00:44:08 +01004255 * Added a configuration file config-no-entropy.h that configures the subset of
Andres AGf84f8922016-09-19 15:33:30 +01004256 library features that do not require an entropy source.
Andres AG7abc9742016-09-23 17:58:49 +01004257 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
4258 to configure the minimum number of bytes for entropy sources using the
4259 mbedtls_hardware_poll() function.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004260
4261Bugfix
4262 * Fix for platform time abstraction to avoid dependency issues where a build
4263 may need time but not the standard C library abstraction, and added
4264 configuration consistency checks to check_config.h
4265 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butcheref8fa012016-10-16 00:44:08 +01004266 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
4267 when GCM is used. Found by udf2457. #441
Simon Butchercad6e932016-09-05 01:46:59 +03004268 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
4269 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcherc0d76b82016-09-07 17:25:16 +03004270 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
4271 a contribution from Tobias Tangemann. #541
Simon Butcheref8fa012016-10-16 00:44:08 +01004272 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcherd43fb952016-09-26 20:48:56 +01004273 certificates are provided.
Andres AG776a6fc2016-09-26 09:52:41 +01004274 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcher3a5e0702016-10-12 16:37:59 +01004275 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcher851ae292016-10-11 10:13:52 +01004276 * Fixed pthread implementation to avoid unintended double initialisations
Simon Butcheref8fa012016-10-16 00:44:08 +01004277 and double frees. Found by Niklas Amnebratt.
Simon Butcherf77309c2016-10-07 15:56:07 +01004278 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
4279 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
4280 by inestlerode. #559.
Andres AG4bdbe092016-09-19 16:58:45 +01004281 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
4282 data structure until after error checks are successful. Found by
Simon Butcherb81496b2016-10-13 14:03:37 +01004283 subramanyam-c. #622
Andres AG821da842016-09-26 10:09:30 +01004284 * Fix documentation and implementation missmatch for function arguments of
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01004285 mbedtls_gcm_finish(). Found by cmiatpaar. #602
Simon Butcher4d69ecd2016-10-13 00:14:37 +01004286 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG5a87c932016-09-26 14:53:05 +01004287 * Fix potential byte overread when verifying malformed SERVER_HELLO in
4288 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Andres AG4b76aec2016-09-23 13:16:02 +01004289 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
Simon Butcher2bd0fba2016-10-13 16:29:56 +01004290 Found by subramanyam-c. #626
Simon Butcher99000142016-10-13 17:21:01 +01004291 * Fix compatibility issue with Internet Explorer client authentication,
4292 where the limited hash choices prevented the client from sending its
4293 certificate. Found by teumas. #513
Janos Follath240f1852016-10-14 15:23:21 +01004294 * Fix compilation without MBEDTLS_SELF_TEST enabled.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004295
4296Changes
4297 * Extended test coverage of special cases, and added new timing test suite.
4298 * Removed self-tests from the basic-built-test.sh script, and added all
4299 missing self-tests to the test suites, to ensure self-tests are only
4300 executed once.
4301 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
4302 * Added support for a Yotta specific configuration file -
4303 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Simon Butcher5908bcc2016-09-04 15:12:09 +01004304 * Added optimization for code space for X.509/OID based on configured
Simon Butcheref8fa012016-10-16 00:44:08 +01004305 features. Contributed by Aviv Palivoda.
Andres AG788aa4a2016-09-14 14:32:09 +01004306 * Renamed source file library/net.c to library/net_sockets.c to avoid
4307 naming collision in projects which also have files with the common name
4308 net.c. For consistency, the corresponding header file, net.h, is marked as
4309 deprecated, and its contents moved to net_sockets.h.
Simon Butcher59bffa22016-10-13 15:55:56 +01004310 * Changed the strategy for X.509 certificate parsing and validation, to no
4311 longer disregard certificates with unrecognised fields.
Simon Butchercf8c1f42016-09-02 21:29:39 +03004312
Simon Butcher46125fb2016-06-27 19:43:55 +01004313= mbed TLS 2.3.0 branch released 2016-06-28
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004314
Janos Follathcc4eba72016-02-10 16:25:55 +00004315Security
Janos Follathe43b81a2016-02-10 16:25:55 +00004316 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
Janos Follath3218b212016-02-10 16:14:10 +00004317 required by PKCS1 v2.2
Janos Follathe43b81a2016-02-10 16:25:55 +00004318 * Fix potential integer overflow to buffer overflow in
4319 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01004320 (not triggerable remotely in (D)TLS).
Hanno Becker01a0e072017-07-26 11:49:40 +01004321 * Fix a potential integer underflow to buffer overread in
Janos Follathbc247c92016-02-11 11:15:44 +00004322 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
4323 SSL/TLS.
Janos Follathcc4eba72016-02-10 16:25:55 +00004324
Simon Butcher3fe6cd32016-04-26 19:51:29 +01004325Features
4326 * Support for platform abstraction of the standard C library time()
4327 function.
4328
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004329Bugfix
4330 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
4331 arguments where the same (in-place doubling). Found and fixed by Janos
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01004332 Follath. #309
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00004333 * Fix potential build failures related to the 'apidoc' target, introduced
4334 in the previous patch release. Found by Robert Scheck. #390 #391
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01004335 * Fix issue in Makefile that prevented building using armar. #386
Antonin Décimo36e89b52019-01-23 15:24:37 +01004336 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
Janos Follath4ae5c292016-02-10 11:27:43 +00004337 ECDSA was disabled in config.h . The leak didn't occur by default.
Simon Butcherf59e66b2016-03-01 20:26:16 +00004338 * Fix an issue that caused valid certificates to be rejected whenever an
4339 expired or not yet valid certificate was parsed before a valid certificate
4340 in the trusted certificate list.
Hanno Becker01a0e072017-07-26 11:49:40 +01004341 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follathcc0e49d2016-02-17 14:34:12 +00004342 buffer after DER certificates to be included in the raw representation.
Simon Butcher3f5c8752016-04-15 19:06:59 +01004343 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath1ed9f992016-03-18 11:45:44 +00004344 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
4345 dereference possible.
Janos Follath8a317052016-04-21 23:37:09 +01004346 * Fix issue that caused a crash if invalid curves were passed to
4347 mbedtls_ssl_conf_curves. #373
Simon Butcherf8935072016-04-29 00:05:32 +01004348 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Paul Bakker8f0e4c22016-05-12 16:38:27 +01004349 * Fix memory leaks in test framework
Paul Bakkerf8e37942016-05-13 10:50:41 +01004350 * Fix test in ssl-opt.sh that does not run properly with valgrind
Simon Butcher46125fb2016-06-27 19:43:55 +01004351 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01004352
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01004353Changes
4354 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
4355 don't use the optimized assembly for bignum multiplication. This removes
4356 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
Simon Butcherd7e9ad72016-04-25 16:07:12 +01004357 * Disabled SSLv3 in the default configuration.
Simon Butchera543d112016-04-26 12:51:37 +01004358 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
4359 Skalozub).
Janos Follathc6dab2b2016-05-23 14:27:02 +01004360 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
4361 ignored, as required by RFC6101.
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01004362
4363= mbed TLS 2.2.1 released 2016-01-05
4364
4365Security
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01004366 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01004367 allocate memory. Only used for certificate generation, not triggerable
Simon Butcher00923c12015-12-22 19:04:24 +00004368 remotely in SSL/TLS. Found by Rafał Przywara. #367
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01004369 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
4370 SLOTH attack on TLS 1.2 server authentication (other attacks from the
4371 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01004372 https://www.mitls.org/pages/attacks/SLOTH
Simon Butcher1285ab52016-01-01 21:42:47 +00004373
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01004374Bugfix
4375 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
4376 * Fix bug in certificate validation that caused valid chains to be rejected
4377 when the first intermediate certificate has pathLenConstraint=0. Found by
4378 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher207990d2015-12-16 01:51:30 +00004379 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Simon Butcher8254ed22015-11-04 11:04:00 +00004380 JayaraghavendranK. #372
Simon Butcher04799a42015-09-29 00:31:09 +01004381 * Fix suboptimal handling of unexpected records that caused interop issues
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004382 with some peers over unreliable links. Avoid dropping an entire DTLS
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02004383 datagram if a single record in a datagram is unexpected, instead only
4384 drop the record and look at subsequent records (if any are present) in
4385 the same datagram. Found by jeannotlapin. #345
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02004386
4387= mbed TLS 2.2.0 released 2015-11-04
Simon Butcher59a8fa72015-11-03 23:09:28 +00004388
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02004389Security
4390 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
4391 once and some allocation fails. Cannot be forced remotely. Found by Guido
Simon Butcher59a8fa72015-11-03 23:09:28 +00004392 Vranken, Intelworks.
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004393 * Fix potential heap corruption on Windows when
4394 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
4395 triggered remotely. Found by Guido Vranken, Intelworks.
4396 * Fix potential buffer overflow in some asn1_write_xxx() functions.
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02004397 Cannot be triggered remotely unless you create X.509 certificates based
4398 on untrusted input or write keys of untrusted origin. Found by Guido
4399 Vranken, Intelworks.
4400 * The X509 max_pathlen constraint was not enforced on intermediate
4401 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02004402 Janos Follath. #280 and #319
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004403
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01004404Features
4405 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
4406 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004407 * Added a key extraction callback to accees the master secret and key
4408 block. (Potential uses include EAP-TLS and Thread.)
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02004409
4410Bugfix
Simon Butcher62aab152015-10-27 16:05:34 +00004411 * Self-signed certificates were not excluded from pathlen counting,
4412 resulting in some valid X.509 being incorrectly rejected. Found and fix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02004413 provided by Janos Follath. #319
4414 * Fix build error with configurations where ECDHE-PSK is the only key
4415 exchange. Found and fix provided by Chris Hammond. #270
Simon Butcher5f7c34b2015-10-27 15:14:55 +00004416 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02004417 ECHD-ECDSA if the only key exchange. Multiple reports. #310
4418 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02004419 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09004420 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
4421 size/curve against the profile. Before that, there was no way to set a
4422 minimum key size for end-entity certificates with RSA keys. Found by
Simon Butcher5f7c34b2015-10-27 15:14:55 +00004423 Matthew Page of Scannex Electronics Ltd.
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01004424 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
4425 Found by Kurt Danielson. #292
4426 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01004427 * Fix bug in ASN.1 encoding of booleans that caused generated CA
4428 certificates to be rejected by some applications, including OS X
4429 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcher04799a42015-09-29 00:31:09 +01004430
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01004431Changes
Simon Butcherc48b66b2015-10-05 10:18:17 +01004432 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
4433 or -1.
Simon Butcher5b8d1d62015-10-04 22:06:51 +01004434
4435= mbed TLS 2.1.2 released 2015-10-06
Simon Butcherc48b66b2015-10-05 10:18:17 +01004436
4437Security
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02004438 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
4439 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01004440 Intelworks.
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02004441 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
Simon Butcherc48b66b2015-10-05 10:18:17 +01004442 once in the same handhake and mbedtls_ssl_conf_psk() was used.
4443 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
4444 remotely.
4445 * Fix stack buffer overflow in pkcs12 decryption (used by
Simon Butchera45aa132015-10-05 00:26:36 +01004446 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
Simon Butcherc48b66b2015-10-05 10:18:17 +01004447 Found by Guido Vranken, Intelworks. Not triggerable remotely.
4448 * Fix potential buffer overflow in mbedtls_mpi_read_string().
4449 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
4450 of TLS, but might be in other uses. On 32 bit machines, requires reading a
4451 string of close to or larger than 1GB to exploit; on 64 bit machines, would
4452 require reading a string of close to or larger than 2^62 bytes.
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02004453 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Simon Butcherfec73a82015-10-05 10:40:31 +01004454 on crafted PEM input data. Found and fix provided by Guido Vranken,
4455 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02004456 accept PEM data from an untrusted source.
4457 * Fix possible heap buffer overflow in base64_encoded() when the input
4458 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Simon Butcher475cf0a2015-10-05 11:57:54 +01004459 Intelworks. Not trigerrable remotely in TLS.
Simon Butcher04799a42015-09-29 00:31:09 +01004460 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01004461 the same mbedtls_ssl_config object and memory allocation fails. Found by
4462 Guido Vranken, Intelworks. Cannot be forced remotely.
4463 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher7776fc32015-10-05 15:44:18 +01004464 authentication against a crafted CA cert. Cannot be triggered remotely
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01004465 unless you allow third parties to pick trust CAs for client auth.
Simon Butcher04799a42015-09-29 00:31:09 +01004466 Found by Guido Vranken, Intelworks.
4467
4468Bugfix
Simon Butchera12e3c02015-10-01 01:59:33 +01004469 * Fix compile error in net.c with musl libc. Found and patch provided by
4470 zhasha (#278).
Simon Butcher04799a42015-09-29 00:31:09 +01004471 * Fix macroization of 'inline' keyword when building as C++. (#279)
Simon Butcher5624ec82015-09-29 01:06:06 +01004472
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004473Changes
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02004474 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
4475 domain names are compliant with RFC 1035.
4476 * Fixed paths for check_config.h in example config files. (Found by bachp)
4477 (#291)
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004478
4479= mbed TLS 2.1.1 released 2015-09-17
Simon Butcher5b8d1d62015-10-04 22:06:51 +01004480
4481Security
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004482 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Simon Butchera1a11282015-09-14 21:30:40 +01004483 signatures. (Found by Florian Weimer, Red Hat.)
4484 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02004485 * Fix possible client-side NULL pointer dereference (read) when the client
4486 tries to continue the handshake after it failed (a misuse of the API).
4487 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
Simon Butcherd69f14b2015-09-11 20:00:20 +01004488 afl-fuzz.)
4489
4490Bugfix
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02004491 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
4492 * Fix off-by-one error in parsing Supported Point Format extension that
4493 caused some handshakes to fail.
4494
4495Changes
4496 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
4497 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Simon Butcherd69f14b2015-09-11 20:00:20 +01004498 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02004499 connection, if cookie verification is available
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02004500 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004501 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02004502 detected and mbedtls_ssl_read() will return
4503 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004504 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004505
4506= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02004507
4508Features
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02004509 * Added support for yotta as a build system.
4510 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004511
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02004512Bugfix
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004513 * Fix segfault in the benchmark program when benchmarking DHM.
4514 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02004515 Leisink).
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02004516 * Fix bug when parsing a ServerHello without extensions (found by David
4517 Sears).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02004518 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
4519 (found by Benoit Lecocq).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02004520 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
4521 installed (found by Rawi666).
4522 * Fix compile error with armcc 5 with --gnu option.
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02004523 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02004524 (found by robotanarchy) (#232).
4525 * Fix bug in Makefile that prevented from installing without building the
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02004526 tests (found by robotanarchy) (#232).
4527 * Fix missing -static-libgcc when building shared libraries for Windows
4528 with make.
Simon Butcher52754592015-09-03 13:06:01 +01004529 * Fix link error when building shared libraries for Windows with make.
4530 * Fix error when loading libmbedtls.so.
4531 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
4532 be always used (found by dcb314) (#235)
4533 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
4534 result trying to unlock an unlocked mutex on invalid input (found by
4535 Fredrik Axelsson) (#257)
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02004536 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02004537 * Fix memory corruption on client with overlong PSK identity, around
4538 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02004539 Aleksandrs Saveljevs) (#238)
4540 * Fix unused function warning when using MBEDTLS_MDx_ALT or
4541 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02004542 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
4543
4544Changes
Simon Butcher52754592015-09-03 13:06:01 +01004545 * The PEM parser now accepts a trailing space at end of lines (#226).
4546 * It is now possible to #include a user-provided configuration file at the
4547 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
4548 compiler's command line.
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02004549 * When verifying a certificate chain, if an intermediate certificate is
Paul Bakker4cb87f42015-07-10 14:09:43 +01004550 trusted, no later cert is checked. (suggested by hannes-landeholm)
Paul Bakker9c5898f2015-02-16 16:18:33 +01004551 (#220).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004552 * Prepend a "thread identifier" to debug messages (issue pointed out by
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02004553 Hugo Leisink) (#210).
4554 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
4555 length.
4556
4557= mbed TLS 2.0.0 released 2015-07-13
4558
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004559Features
4560 * Support for DTLS 1.0 and 1.2 (RFC 6347).
4561 * Ability to override core functions from MDx, SHAx, AES and DES modules
4562 with custom implementation (eg hardware accelerated), complementing the
4563 ability to override the whole module.
4564 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02004565 preserve forward secrecy, and allows sharing across multiple contexts.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004566 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02004567 which algorithms and key sizes (curves for ECDSA) are acceptable.
4568 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004569 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01004570 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004571 parameters.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01004572
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02004573API Changes
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02004574 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
4575 You now need to link to all of them if you use TLS for example.
4576 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004577 Some names have been further changed to make them more consistent.
Antonin Décimo36e89b52019-01-23 15:24:37 +01004578 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004579 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02004580 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02004581 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02004582 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02004583 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02004584 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02004585 * The following _init() functions that could return errors have
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02004586 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02004587 should generally be the first function called on this context after init:
4588 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02004589 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
4590 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004591 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004592 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
Tillmann Karras588ad502015-09-25 04:27:22 +02004593 Note that for mbedtls_ssl_setup(), you need to be done setting up the
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004594 ssl_config structure before calling it.
4595 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
4596 ssl_set_session() and ssl_set_client_transport_id(), plus
4597 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02004598 (see rename.pl and compat-1.3.h above) and their first argument's type
4599 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004600 * ssl_set_bio() changed signature (contexts merged, order switched, one
4601 additional callback for read-with-timeout).
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02004602 * The following functions have been introduced and must be used in callback
4603 implementations (SNI, PSK) instead of their *conf counterparts:
4604 mbedtls_ssl_set_hs_own_cert()
4605 mbedtls_ssl_set_hs_ca_chain()
4606 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02004607 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01004608 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004609 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01004610 pointer, parameters reordered).
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02004611 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
4612 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02004613 * The SSL debug callback gained two new arguments (file name, line number).
4614 * Debug modes were removed.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004615 * mbedtls_ssl_conf_truncated_hmac() now returns void.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004616 * mbedtls_memory_buffer_alloc_init() now returns void.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02004617 * X.509 verification flags are now an uint32_t. Affect the signature of:
4618 mbedtls_ssl_get_verify_result()
4619 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01004620 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02004621 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01004622 * The following functions changed prototype to avoid an in-out length
4623 parameter:
4624 mbedtls_base64_encode()
4625 mbedtls_base64_decode()
4626 mbedtls_mpi_write_string()
4627 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02004628 * In the NET module, all "int" and "int *" arguments for file descriptors
4629 changed type to "mbedtls_net_context *".
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02004630 * net_accept() gained new arguments for the size of the client_ip buffer.
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02004631 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
4632 return void.
Antonin Décimo36e89b52019-01-23 15:24:37 +01004633 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02004634 ecdsa_write_signature_det() was deprecated.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02004635 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02004636 * Last argument of x509_crt_check_key_usage() and
4637 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01004638 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
4639 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
4640 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01004641 strings; use the new *_len variables instead of strlen().
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02004642 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
4643 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
4644 length parameter to include the terminating null byte for PEM input.
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00004645 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02004646 * calloc() is now used instead of malloc() everywhere. API of platform
4647 layer and the memory_buffer_alloc module changed accordingly.
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02004648 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004649 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
4650 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02004651 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
4652 in config.h
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004653 * net_connect() and net_bind() have a new 'proto' argument to choose
4654 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02004655 Their 'port' argument type is changed to a string.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004656 * Some constness fixes
4657
4658Removals
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02004659 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02004660 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
4661 mbedtls_ecp_muladd().
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02004662 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
4663 (use generic functions from md.h)
4664 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02004665 waiting function.
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02004666 * Removed test DHM parameters from the test certs module.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02004667 * Removed the PBKDF2 module (use PKCS5).
4668 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
4669 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
4670 * Removed openssl.h (very partial OpenSSL compatibility layer).
4671 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
4672 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
4673 been removed (compiler is required to support 32-bit operations).
4674 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
4675 * Removed test program o_p_test, the script compat.sh does more.
4676 * Removed test program ssl_test, superseded by ssl-opt.sh.
4677 * Removed helper script active-config.pl
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004678
4679New deprecations
4680 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
4681 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02004682
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004683Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004684 * Renamed a few headers to include _internal in the name. Those headers are
4685 not supposed to be included by users.
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02004686 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
4687 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004688 * Changed cipher_base_t into an opaque structure.
4689 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01004690 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02004691 * Removed r and s from ecdsa_context
4692 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01004693
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004694Default behavior changes
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02004695 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004696 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
4697 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004698 * Support for receiving SSLv2 ClientHello is now disabled by default at
4699 compile time.
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01004700 * The default authmode for SSL/TLS clients is now REQUIRED.
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02004701 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
4702 enabled in the default configuration, this is only noticeable if using a
4703 custom config.h
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01004704 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004705 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
4706 chain verification.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01004707 * Negotiation of truncated HMAC is now disabled by default on server too.
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02004708 * The following functions are now case-sensitive:
4709 mbedtls_cipher_info_from_string()
4710 mbedtls_ecp_curve_info_from_name()
4711 mbedtls_md_info_from_string()
4712 mbedtls_ssl_ciphersuite_from_string()
4713 mbedtls_version_check_feature()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01004714
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02004715Requirement changes
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02004716 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02004717 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01004718 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00004719
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004720API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01004721 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
4722 new prototype, and mbedtls_ssl_set_read_timeout().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02004723 * The following functions now return void:
4724 mbedtls_ssl_conf_transport()
4725 mbedtls_ssl_conf_max_version()
4726 mbedtls_ssl_conf_min_version()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02004727 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
4728 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
4729 an example implementation, see mbedtls_timing_delay_context and
4730 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02004731 * With UDP sockets, it is no longer necessary to call net_bind() again
4732 after a successful net_accept().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01004733
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01004734Changes
4735 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
4736 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02004737 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
4738 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01004739
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004740= mbed TLS 1.3 branch
4741
4742Security
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02004743 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01004744 extendedKeyUsage on the leaf certificate was lost (results not accessible
4745 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02004746 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
4747 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004748
4749Features
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02004750 * Improve ECC performance by using more efficient doubling formulas
4751 (contributed by Peter Dettman).
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02004752 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02004753 * Add support for reading DH parameters with privateValueLength included
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02004754 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01004755 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
4756 * Add support for id-at-uniqueIdentifier in X.509 names.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00004757 * Add support for overriding snprintf() (except on Windows) and exit() in
4758 the platform layer.
4759 * Add an option to use macros instead of function pointers in the platform
4760 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00004761 * Improved Makefiles for Windows targets by fixing library targets and making
4762 cross-compilation easier (thanks to Alon Bar-Lev).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00004763 * The benchmark program also prints heap usage for public-key primitives
4764 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
4765 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
4766 speed and RAM (heap only for now) usage.
4767 * New script memory.sh helps measuring the ROM and RAM requirements of two
4768 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004769 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01004770 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004771 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01004772 errors on use of deprecated functions.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004773
4774Bugfix
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01004775 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01004776 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01004777 * Fix bug in entropy.c when THREADING_C is also enabled that caused
4778 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02004779 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
4780 once on the same context.
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02004781 * Fix bug in ssl_mail_client when password is longer that username (found
4782 by Bruno Pape).
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02004783 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
4784 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02004785 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
4786 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02004787 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
4788 doing it at runtime (using uname) rather that compile time.
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02004789 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02004790 * Fix potential NULL pointer dereference (not trigerrable remotely) when
4791 ssl_write() is called before the handshake is finished (introduced in
4792 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02004793 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
4794 rejected.
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01004795 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01004796 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00004797 * Fix hardclock() (only used in the benchmarking program) with some
4798 versions of mingw64 (found by kxjhlele).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00004799 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00004800 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
4801 platforms.
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00004802 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00004803 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
4804 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
4805 in 1.3.10).
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00004806 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02004807 * Add missing dependency on SHA-256 in some x509 programs (reported by
4808 Gergely Budai).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02004809 * Fix bug related to ssl_set_curves(): the client didn't check that the
4810 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00004811
4812Changes
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02004813 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
4814 * Remove potential sources of timing variations (some contributed by Pascal
4815 Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02004816 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02004817 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02004818 * compat-1.2.h and openssl.h are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02004819 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00004820 more flexible (warning: OFLAGS is not used any more) (see the README)
4821 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02004822 * ssl_set_own_cert() no longer calls pk_check_pair() since the
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00004823 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00004824 * Move from SHA-1 to SHA-256 in example programs using signatures
4825 (suggested by Thorsten Mühlfelder).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00004826 * Remove some unneeded inclusions of header files from the standard library
4827 "minimize" others (eg use stddef.h if only size_t is needed).
4828 * Change #include lines in test files to use double quotes instead of angle
4829 brackets for uniformity with the rest of the code.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00004830 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02004831
Paul Bakkerdaae3b72015-02-08 15:49:54 +01004832= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004833Security
4834 * NULL pointer dereference in the buffer-based allocator when the buffer is
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00004835 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004836 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
4837 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004838 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01004839 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004840 client certificate) (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01004841 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01004842 (TLS server is not affected if it doesn't ask for a client certificate)
4843 (found using Codenomicon Defensics).
4844 * Fix potential stack overflow while parsing crafted X.509 certificates
4845 (TLS server is not affected if it doesn't ask for a client certificate)
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01004846 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00004847 * Fix timing difference that could theoretically lead to a
4848 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
4849 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01004850
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004851Features
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004852 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
4853 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
4854 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004855 * Add function pk_check_pair() to test if public and private keys match.
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01004856 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01004857 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
4858 length of an X.509 verification chain.
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01004859 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01004860 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Paul Bakker6152b022015-04-14 15:00:09 +02004861 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01004862 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01004863 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
4864 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004865 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01004866 while using the default ciphersuite list.
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00004867 * Added new error codes and debug messages about selection of
4868 ciphersuite/certificate.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01004869
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01004870Bugfix
4871 * Stack buffer overflow if ctr_drbg_update() is called with too large
4872 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01004873 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
4874 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004875 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
4876 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01004877 by Julian Ospald).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01004878 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01004879 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
4880 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00004881 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
4882 Peter Vaskovic).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00004883 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00004884 * ssl_get_verify_result() now works even if the handshake was aborted due
4885 to a failed verification (found by Fredrik Axelsson).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00004886 * Skip writing and parsing signature_algorithm extension if none of the
4887 key exchanges enabled needs certificates. This fixes a possible interop
4888 issue with some servers when a zero-length extension was sent. (Reported
4889 by Peter Dettman.)
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00004890 * On a 0-length input, base64_encode() did not correctly set output length
4891 (found by Hendrik van den Boogaard).
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01004892
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01004893Changes
4894 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
4895 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01004896 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01004897 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01004898 * Forbid repeated extensions in X.509 certificates.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01004899 * debug_print_buf() now prints a text view in addition to hexadecimal.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01004900 * A specific error is now returned when there are ciphersuites in common
4901 but none of them is usable due to external factors such as no certificate
Paul Bakkere522d0f2015-01-14 16:12:48 +01004902 with a suitable (extended)KeyUsage or curve or no PSK set.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01004903 * It is now possible to disable negotiation of truncated HMAC server-side
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01004904 at runtime with ssl_set_truncated_hmac().
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01004905 * Example programs for SSL client and server now disable SSLv3 by default.
4906 * Example programs for SSL client and server now disable RC4 by default.
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00004907 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01004908
Paul Bakker9eac4f72014-10-20 13:56:15 +02004909= PolarSSL 1.3.9 released 2014-10-20
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02004910Security
4911 * Lowest common hash was selected from signature_algorithms extension in
4912 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02004913 * Remotely-triggerable memory leak when parsing some X.509 certificates
Paul Bakkerb082bb52014-10-20 13:37:51 +02004914 (server is not affected if it doesn't ask for a client certificate)
4915 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02004916 * Remotely-triggerable memory leak when parsing crafted ClientHello
Paul Bakkerb082bb52014-10-20 13:37:51 +02004917 (not affected if ECC support was compiled out) (found using Codenomicon
4918 Defensics).
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02004919
Paul Bakker8dcb2d72014-08-08 12:22:30 +02004920Bugfix
4921 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02004922 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02004923 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02004924 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02004925 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02004926 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
4927 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02004928 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02004929 * ssl_read() could return non-application data records on server while
4930 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02004931 * Server-initiated renegotiation would fail with non-blocking I/O if the
4932 write callback returned WANT_WRITE when requesting renegotiation.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02004933 * ssl_close_notify() could send more than one message in some circumstances
4934 with non-blocking I/O.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02004935 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Paul Bakker5a5fa922014-09-26 14:53:04 +02004936 * x509_crt_parse() did not increase total_failed on PEM error
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02004937 * Fix compile error with armcc in mpi_is_prime()
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02004938 * Fix potential bad read in parsing ServerHello (found by Adrien
4939 Vialletelle).
Paul Bakker8dcb2d72014-08-08 12:22:30 +02004940
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02004941Changes
4942 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
4943 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02004944 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
4945 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02004946 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
4947 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02004948 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
4949 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02004950 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
4951 RSA keys.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02004952 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02004953 * X.509 certificates with more than one AttributeTypeAndValue per
4954 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02004955
Paul Bakker1910aa72014-07-11 11:28:56 +02004956= PolarSSL 1.3.8 released 2014-07-11
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02004957Security
4958 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
4959 It was possible to crash the server (and client) using crafted messages
4960 when a GCM suite was chosen.
4961
Paul Bakkerc6ece492014-05-22 15:45:03 +02004962Features
4963 * Add CCM module and cipher mode to Cipher Layer
4964 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02004965 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
4966 modules (certificates, CRLs and CSRs).
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02004967 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02004968 * Add example config.h for PSK with CCM, optimized for low RAM usage.
4969 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02004970 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
4971 from the default list (inactive by default).
Paul Bakker23647b42014-07-04 15:00:12 +02004972 * Add server-side enforcement of sent renegotiation requests
4973 (ssl_set_renegotiation_enforced())
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02004974 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
4975 ciphersuites to use and save some memory if the list is small.
Paul Bakkerc6ece492014-05-22 15:45:03 +02004976
Paul Bakker863989b2014-06-12 21:49:01 +02004977Changes
4978 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
4979 required on some platforms (e.g. OpenBSD)
Paul Bakker34617722014-06-13 17:20:13 +02004980 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
4981 against unwanted compiler optimizations
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02004982 * md_list() now returns hashes strongest first
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02004983 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
4984 strongest offered by client.
Paul Bakker28476e22014-07-01 15:59:04 +02004985 * All public contexts have _init() and _free() functions now for simpler
4986 usage pattern
Paul Bakker863989b2014-06-12 21:49:01 +02004987
Paul Bakker5593f7c2014-05-06 10:29:28 +02004988Bugfix
4989 * Fix in debug_print_msg()
Paul Bakker1ebc0c52014-05-22 15:47:58 +02004990 * Enforce alignment in the buffer allocator even if buffer is not aligned
Paul Bakkerdff31392014-05-22 15:06:41 +02004991 * Remove less-than-zero checks on unsigned numbers
Paul Bakker0f651c72014-05-22 15:12:19 +02004992 * Stricter check on SSL ClientHello internal sizes compared to actual packet
4993 size (found by TrustInSoft)
Paul Bakker49033ba2014-06-12 21:46:13 +02004994 * Fix WSAStartup() return value check (found by Peter Vaskovic)
4995 * Other minor issues (found by Peter Vaskovic)
4996 * Fix symlink command for cross compiling with CMake (found by Andre
4997 Heinecke)
Paul Bakker3c38f292014-06-13 17:37:46 +02004998 * Fix DER output of gen_key app (found by Gergely Budai)
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02004999 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02005000 use with some ciphersuites and versions (RC4 in all versions, CBC with
5001 versions < TLS 1.1).
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02005002 * Very large records using more than 224 bytes of padding were incorrectly
5003 rejected with CBC-based ciphersuites and TLS >= 1.1
5004 * Very large records using less padding could cause a buffer overread of up
5005 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02005006 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
5007 been removed in 1.3.6.)
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02005008 * Restore ability to locally trust a self-signed cert that is not a proper
5009 CA for use as an end entity certificate. (This had been removed in
5010 1.3.6.)
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07005011 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02005012 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
5013 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02005014 * Fix off-by-one error in parsing Supported Point Format extension that
5015 caused some handshakes to fail.
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02005016 * Fix possible miscomputation of the premaster secret with DHE-PSK key
5017 exchange that caused some handshakes to fail with other implementations.
5018 (Failure rate <= 1/255 with common DHM moduli.)
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02005019 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakkerd5983182014-07-04 13:50:31 +02005020 * Fix base64_decode() to return and check length correctly (in case of
5021 tight buffers)
Paul Bakker6c343d72014-07-10 14:36:19 +02005022 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
5023 by Hui Dong)
Paul Bakker5593f7c2014-05-06 10:29:28 +02005024
Paul Bakker47431b62014-05-02 13:27:13 +02005025= PolarSSL 1.3.7 released on 2014-05-02
Paul Bakkereaebbd52014-04-25 15:04:14 +02005026Features
Paul Bakkerc73079a2014-04-25 16:34:30 +02005027 * debug_set_log_mode() added to determine raw or full logging
5028 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker0f90d7d2014-04-30 11:49:44 +02005029 * version_check_feature() added to check for compile-time options at
5030 run-time
Paul Bakker92478c32014-04-25 15:18:34 +02005031
Paul Bakker088c5c52014-04-25 11:11:10 +02005032Changes
5033 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
5034 checked and filled in the relevant module headers
Paul Bakker92478c32014-04-25 15:18:34 +02005035 * Debug module only outputs full lines instead of parts
Paul Bakker63844402014-04-30 15:34:12 +02005036 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02005037 * AES-NI now compiles with "old" assemblers too
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02005038 * Ciphersuites based on RC4 now have the lowest priority by default
Paul Bakker088c5c52014-04-25 11:11:10 +02005039
Paul Bakkere92f73d2014-04-18 14:08:26 +02005040Bugfix
5041 * Only iterate over actual certificates in ssl_write_certificate_request()
5042 (found by Matthew Page)
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02005043 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
5044 Karger)
Paul Bakkerfdba4682014-04-25 11:48:35 +02005045 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakker61885c72014-04-25 12:59:03 +02005046 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
5047 ciphersuites, for full SSL frames of data.
Paul Bakkera7036632014-04-30 10:15:38 +02005048 * Improve interoperability by not writing extension length in ClientHello /
5049 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker24f37cc2014-04-30 13:33:35 +02005050 * rsa_check_pubkey() now allows an E up to N
Paul Bakkerf96f7b62014-04-30 16:02:38 +02005051 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Paul Bakker33dc46b2014-04-30 16:11:39 +02005052 * mpi_fill_random() was creating numbers larger than requested on
5053 big-endian platform when size was not an integer number of limbs
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02005054 * Fix dependencies issues in X.509 test suite.
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02005055 * Some parts of ssl_tls.c were compiled even when the module was disabled.
Markus Pfeiffera26a0052014-04-22 20:16:15 +00005056 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Barry K. Nathancf975f52014-04-23 17:40:25 -07005057 * Fix detection of Clang on some Apple platforms with CMake
5058 (found by Barry K. Nathan)
Paul Bakkere92f73d2014-04-18 14:08:26 +02005059
Paul Bakker784b04f2014-04-11 15:33:59 +02005060= PolarSSL 1.3.6 released on 2014-04-11
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005061
Paul Bakker27e36d32014-04-08 12:33:37 +02005062Features
5063 * Support for the ALPN SSL extension
Paul Bakker1cfc4582014-04-09 15:25:13 +02005064 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02005065 * Enable verification of the keyUsage extension for CA and leaf
Paul Bakker59366212014-04-09 15:55:20 +02005066 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02005067 * Enable verification of the extendedKeyUsage extension
5068 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02005069
Paul Bakker4984d3c2014-04-04 15:39:37 +02005070Changes
5071 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02005072 * pk_verify() now returns a specific error code when the signature is valid
5073 but shorter than the supplied length.
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02005074 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02005075 * Reject certificates with times not in UTC, per RFC 5280.
Paul Bakker4984d3c2014-04-04 15:39:37 +02005076
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02005077Security
5078 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
5079 (Found by Watson Ladd.)
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02005080 * The notAfter date of some certificates was no longer checked since 1.3.5.
5081 This affects certificates in the user-supplied chain except the top
5082 certificate. If the user-supplied chain contains only one certificates,
5083 it is not affected (ie, its notAfter date is properly checked).
Paul Bakker4224bc02014-04-08 14:36:50 +02005084 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
5085 TrustInSoft)
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02005086
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005087Bugfix
5088 * The length of various ClientKeyExchange messages was not properly checked.
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01005089 * Some example server programs were not sending the close_notify alert.
Paul Bakker75a28602014-03-31 12:08:17 +02005090 * Potential memory leak in mpi_exp_mod() when error occurs during
5091 calculation of RR.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02005092 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02005093 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
5094 Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02005095 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
5096 (found by Gergely Budai)
Shuo Chen95a0d112014-04-04 21:04:40 -07005097 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
5098 Shuo Chen).
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01005099 * oid_get_numeric_string() used to truncate the output without returning an
5100 error if the output buffer was just 1 byte too small.
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01005101 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02005102 * Calling pk_debug() on an RSA-alt key would segfault.
5103 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
Paul Bakker16300582014-04-11 13:28:43 +02005104 * Potential buffer overwrite in pem_write_buffer() because of low length
5105 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard78848372014-04-10 17:45:07 +02005106 * EC curves constants, which should be only in ROM since 1.3.3, were also
5107 stored in RAM due to missing 'const's (found by Gergely Budai).
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01005108
Paul Bakker96d52652014-03-26 16:55:50 +01005109= PolarSSL 1.3.5 released on 2014-03-26
Paul Bakker5fb8efe2014-02-05 15:54:34 +01005110Features
5111 * HMAC-DRBG as a separate module
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005112 * Option to set the Curve preference order (disabled by default)
Paul Bakker6a28e722014-02-06 13:41:55 +01005113 * Single Platform compatilibity layer (for memory / printf / fprintf)
Paul Bakkerf2561b32014-02-06 15:11:55 +01005114 * Ability to provide alternate timing implementation
Paul Bakker2ceda572014-02-06 15:55:25 +01005115 * Ability to force the entropy module to use SHA-256 as its basis
5116 (POLARSSL_ENTROPY_FORCE_SHA256)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01005117 * Testing script ssl-opt.sh added for testing 'live' ssl option
5118 interoperability against OpenSSL and PolarSSL
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01005119 * Support for reading EC keys that use SpecifiedECDomain in some cases.
Paul Bakker66ff70d2014-03-26 11:54:05 +01005120 * Entropy module now supports seed writing and reading
Paul Bakker6a28e722014-02-06 13:41:55 +01005121
5122Changes
5123 * Deprecated the Memory layer
Paul Bakker47703a02014-02-06 15:01:20 +01005124 * entropy_add_source(), entropy_update_manual() and entropy_gather()
5125 now thread-safe if POLARSSL_THREADING_C defined
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01005126 * Improvements to the CMake build system, contributed by Julian Ospald.
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01005127 * Work around a bug of the version of Clang shipped by Apple with Mavericks
5128 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01005129 * Revamped the compat.sh interoperatibility script to include support for
5130 testing against GnuTLS
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005131 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Paul Bakker674e0b02014-03-26 13:26:52 +01005132 * Improvements to tests/Makefile, contributed by Oden Eriksson.
Paul Bakker5fb8efe2014-02-05 15:54:34 +01005133
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005134Security
5135 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01005136 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005137 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01005138 * Check notBefore timestamp of certificates and CRLs from the future.
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01005139 * Forbid sequence number wrapping
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005140 * Fixed possible buffer overflow with overlong PSK
Paul Bakker91c61bc2014-03-26 14:06:55 +01005141 * Possible remotely-triggered out-of-bounds memory access fixed (found by
5142 TrustInSoft)
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01005143
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01005144Bugfix
5145 * ecp_gen_keypair() does more tries to prevent failure because of
5146 statistics
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01005147 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakkercd6d69a2014-02-06 15:43:21 +01005148 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01005149 * Fixed version-major intolerance in server
Paul Bakker3d52ab72014-03-07 10:33:55 +01005150 * Fixed CMake symlinking on out-of-source builds
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01005151 * Fixed dependency issues in test suite
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01005152 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Alex Wilson73491422014-03-06 00:04:09 +10005153 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
5154 Alex Wilson.)
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005155 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
5156 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01005157 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005158 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01005159 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005160 client certificate.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01005161 * ssl_srv was leaking memory when client presented a timed out ticket
Paul Bakkerb0695ce2014-03-17 13:42:23 +01005162 containing a client certificate
Paul Bakker3d6504a2014-03-17 13:41:51 +01005163 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
5164 out_ctr failed
Paul Bakker77f4f392014-03-26 15:28:55 +01005165 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
5166 of one of them failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01005167 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker5fff23b2014-03-26 15:34:54 +01005168 * x509_get_current_time() uses localtime_r() to prevent thread issues
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01005169
Paul Bakker2aca2412014-01-27 11:49:46 +01005170= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker3eb96732014-01-22 13:08:19 +01005171Features
Paul Bakker0ac99ca2014-01-22 13:08:44 +01005172 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakker5862eee2014-01-22 14:18:03 +01005173 * Support for RIPEMD-160
Paul Bakker556efba2014-01-24 15:38:12 +01005174 * Support for AES CFB8 mode
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01005175 * Support for deterministic ECDSA (RFC 6979)
Paul Bakker3eb96732014-01-22 13:08:19 +01005176
5177Bugfix
5178 * Potential memory leak in bignum_selftest()
5179 * Replaced expired test certificate
Paul Bakkerd75ba402014-01-24 16:11:17 +01005180 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakkerb84582b2014-01-27 12:23:43 +01005181 * net module handles timeouts on blocking sockets better (found by Tilman
5182 Sauerbeck)
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01005183 * Assembly format fixes in bn_mul.h
5184
5185Security
Paul Bakkerb84582b2014-01-27 12:23:43 +01005186 * Missing MPI_CHK calls added around unguarded mpi calls (found by
5187 TrustInSoft)
Paul Bakker3eb96732014-01-22 13:08:19 +01005188
Paul Bakker5bc07a32013-12-31 10:57:44 +01005189= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker014f1432013-12-02 14:54:01 +01005190Features
5191 * EC key generation support in gen_key app
Paul Bakker9dc53a92013-12-02 14:55:28 +01005192 * Support for adhering to client ciphersuite order preference
5193 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker48d78a52013-12-05 16:11:38 +01005194 * Support for Curve25519
Paul Bakkerfdf94692013-12-17 13:09:31 +01005195 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakker5a607d22013-12-17 14:33:42 +01005196 * Support for IPv6 in the NET module
Paul Bakker23116fd2013-12-30 14:09:47 +01005197 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakkerf9c49532013-12-19 15:40:58 +01005198 * SSL Pthread-based server example added (ssl_pthread_server)
Paul Bakker014f1432013-12-02 14:54:01 +01005199
Paul Bakker7aa03752013-11-26 17:37:31 +01005200Changes
5201 * gen_prime() speedup
5202 * Speedup of ECP multiplication operation
5203 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerc3d0d072013-12-02 14:50:49 +01005204 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker4040d7e2013-12-02 14:52:57 +01005205 * More constant-time checks in the RSA module
Paul Bakkerb14817d2013-12-02 22:03:23 +01005206 * Split off curves from ecp.c into ecp_curves.c
Paul Bakker5ab68ba2013-12-17 13:10:48 +01005207 * Curves are now stored fully in ROM
Paul Bakkerc7387912013-12-31 10:32:50 +01005208 * Memory usage optimizations in ECP module
Paul Bakkera8fd3e32013-12-31 11:54:08 +01005209 * Removed POLARSSL_THREADING_DUMMY
Paul Bakker7aa03752013-11-26 17:37:31 +01005210
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005211Bugfix
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01005212 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005213 * Fixed X.509 hostname comparison (with non-regular characters)
Paul Bakkera9a028e2013-11-21 17:31:06 +01005214 * SSL now gracefully handles missing RNG
Paul Bakker7aa03752013-11-26 17:37:31 +01005215 * Missing defines / cases for RSA_PSK key exchange
5216 * crypt_and_hash app checks MAC before final decryption
Paul Bakker6f0636a2013-12-16 15:24:05 +01005217 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakkerf70fe812013-12-16 16:43:10 +01005218 * Memory leak in benchmark application
Paul Bakker1a56fc92013-12-19 13:51:24 +01005219 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6ea1a952013-12-31 11:16:03 +01005220 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
5221 TrustInSoft)
Paul Bakker6992eb72013-12-31 11:35:16 +01005222 * Fixed potential overflow in certificate size verification in
5223 ssl_write_certificate() (found by TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01005224
Paul Bakker956c9e02013-12-19 14:42:28 +01005225Security
5226 * Possible remotely-triggered out-of-bounds memory access fixed (found by
5227 TrustInSoft)
5228
Paul Bakkerf4dc1862013-11-04 17:29:42 +01005229= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker08bb1872013-10-28 14:03:26 +01005230Features
5231 * PK tests added to test framework
Paul Bakker3f917e22013-10-28 14:16:59 +01005232 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker16421222013-10-28 14:37:09 +01005233 * Support for Camellia-GCM mode and ciphersuites
Paul Bakker08bb1872013-10-28 14:03:26 +01005234
Paul Bakker7bc745b2013-10-28 14:39:49 +01005235Changes
5236 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01005237 * Value comparisons in SSL layer are now constant-time
Paul Bakker7b0be682013-10-29 14:24:37 +01005238 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakkere1121b62013-10-31 14:37:37 +01005239 * SSL Renegotiation was refactored
Paul Bakker7bc745b2013-10-28 14:39:49 +01005240
Paul Bakker677377f2013-10-28 12:54:26 +01005241Bugfix
Paul Bakker16421222013-10-28 14:37:09 +01005242 * More stringent checks in cipher layer
Paul Bakker677377f2013-10-28 12:54:26 +01005243 * Server does not send out extensions not advertised by client
Paul Bakker45a2c8d2013-10-28 12:57:08 +01005244 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker68037da2013-10-28 14:02:40 +01005245 * Misc fixes and additions to dependency checks
Paul Bakker50dc8502013-10-28 21:19:10 +01005246 * Const correctness
Paul Bakker93c6aa42013-10-28 22:28:09 +01005247 * cert_write with selfsign should use issuer_name as subject_name
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01005248 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakkerfa6a6202013-10-28 18:48:30 +01005249 * Defines to handle UEFI environment under MSVC
Paul Bakkere1121b62013-10-31 14:37:37 +01005250 * Server-side initiated renegotiations send HelloRequest
Paul Bakker677377f2013-10-28 12:54:26 +01005251
Paul Bakker5c17ccd2013-10-15 13:12:41 +02005252= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakkerb799dec2013-10-11 10:03:27 +02005253Features
5254 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakker376e8152013-10-15 12:44:23 +02005255 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerf34673e2013-10-15 12:46:17 +02005256 * Support for RSA-PSK key-exchange and ciphersuites
Paul Bakkerb799dec2013-10-11 10:03:27 +02005257
Paul Bakkerddba8822013-10-11 09:21:56 +02005258Changes
5259 * RSA blinding locks for a smaller amount of time
Paul Bakker16770332013-10-11 09:59:44 +02005260 * TLS compression only allocates working buffer once
Paul Bakkerbe089b02013-10-14 15:51:50 +02005261 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
Paul Bakkera7ea6a52013-10-15 11:55:10 +02005262 * config.h is more script-friendly
Paul Bakkerddba8822013-10-11 09:21:56 +02005263
5264Bugfix
5265 * Missing MSVC defines added
5266 * Compile errors with POLARSSL_RSA_NO_CRT
5267 * Header files with 'polarssl/'
Paul Bakkerfcc17212013-10-11 09:36:52 +02005268 * Const correctness
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02005269 * Possible naming collision in dhm_context
Paul Bakker4aa40d42013-10-11 10:49:24 +02005270 * Better support for MSVC
Paul Bakkerb7c13122013-10-11 10:51:32 +02005271 * threading_set_alt() name
Paul Bakker5191e922013-10-11 10:54:28 +02005272 * Added missing x509write_crt_set_version()
Paul Bakkerddba8822013-10-11 09:21:56 +02005273
Paul Bakker5c17ccd2013-10-15 13:12:41 +02005274= PolarSSL 1.3.0 released on 2013-10-01
Paul Bakker41c83d32013-03-20 14:39:14 +01005275Features
5276 * Elliptic Curve Cryptography module added
5277 * Elliptic Curve Diffie Hellman module added
5278 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
5279 (ECDHE-based ciphersuites)
Paul Bakkerc8676782013-08-28 12:15:11 +02005280 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
5281 (ECDSA-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02005282 * Ability to specify allowed ciphersuites based on the protocol version.
Paul Bakkerb91c2b52013-04-19 16:05:16 +02005283 * PSK and DHE-PSK based ciphersuites added
Paul Bakker6e339b52013-07-03 13:37:05 +02005284 * Memory allocation abstraction layer added
5285 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakker2466d932013-09-28 14:40:38 +02005286 * Threading abstraction layer added (dummy / pthread / alternate)
Paul Bakker5ad403f2013-09-18 21:21:30 +02005287 * Public Key abstraction layer added
Paul Bakkerf85778e2013-07-19 14:55:25 +02005288 * Parsing Elliptic Curve keys
5289 * Parsing Elliptic Curve certificates
5290 * Support for max_fragment_length extension (RFC 6066)
5291 * Support for truncated_hmac extension (RFC 6066)
Paul Bakkerda4d1c32013-08-14 12:24:34 +02005292 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
5293 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
Paul Bakker936539a2013-08-14 13:49:20 +02005294 * Support for session tickets (RFC 5077)
Paul Bakkerca174fe2013-08-28 16:31:30 +02005295 * Certificate Request (CSR) generation with extensions (key_usage,
5296 ns_cert_type)
Paul Bakker7fb4a792013-09-12 12:00:52 +02005297 * X509 Certificate writing with extensions (basic_constraints,
5298 issuer_key_identifier, etc)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02005299 * Optional blinding for RSA, DHM and EC
Paul Bakker8b817dc2013-09-25 18:03:58 +02005300 * Support for multiple active certificate / key pairs in SSL servers for
Darryl Green11999bb2018-03-13 15:22:58 +00005301 the same host (Not to be confused with SNI!)
Paul Bakker41c83d32013-03-20 14:39:14 +01005302
Paul Bakker9b5798d2013-03-13 13:53:00 +01005303Changes
Paul Bakkerd2f068e2013-08-27 21:19:20 +02005304 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
5305 individually
Paul Bakker68884e32013-01-07 18:20:04 +01005306 * Introduced separate SSL Ciphersuites module that is based on
5307 Cipher and MD information
Paul Bakker9b5798d2013-03-13 13:53:00 +01005308 * Internals for SSL module adapted to have separate IV pointer that is
5309 dynamically set (Better support for hardware acceleration)
Paul Bakkerc70b9822013-04-07 22:00:46 +02005310 * Moved all OID functionality to a separate module. RSA function
5311 prototypes for the RSA sign and verify functions changed as a result
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02005312 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker2fbefde2013-06-29 16:01:15 +02005313 * Client and server now filter sent and accepted ciphersuites on minimum
5314 and maximum protocol version
Paul Bakker0be444a2013-08-27 21:55:01 +02005315 * Ability to disable server_name extension (RFC 6066)
Paul Bakkere2ab84f2013-06-29 18:24:32 +02005316 * Renamed error_strerror() to the less conflicting polarssl_strerror()
5317 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker9e36f042013-06-30 14:34:05 +02005318 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
Paul Bakker548957d2013-08-30 10:30:02 +02005319 * All RSA operations require a random generator for blinding purposes
Paul Bakker45f21c72013-09-18 15:33:49 +02005320 * X509 core refactored
5321 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
Paul Bakker5ad403f2013-09-18 21:21:30 +02005322 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakkerc27c4e22013-09-23 15:01:36 +02005323 * Support faulty X509 v1 certificates with extensions
5324 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker9b5798d2013-03-13 13:53:00 +01005325
Paul Bakkereff2e6d2013-04-11 17:13:22 +02005326Bugfix
Paul Bakker73d44312013-05-22 13:56:26 +02005327 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02005328 * zlib compression/decompression skipped on empty blocks
Paul Bakker1e6a1752013-07-26 14:10:22 +02005329 * Support for AIX header locations in net.c module
Paul Bakker003dbad2013-09-09 17:26:14 +02005330 * Fixed file descriptor leaks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02005331
Paul Bakkeraab30c12013-08-30 11:00:25 +02005332Security
5333 * RSA blinding on CRT operations to counter timing attacks
5334 (found by Cyril Arnaud and Pierre-Alain Fouque)
5335
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02005336
5337= Version 1.2.14 released 2015-05-??
5338
5339Security
5340 * Fix potential invalid memory read in the server, that allows a client to
5341 crash it remotely (found by Caj Larsson).
5342 * Fix potential invalid memory read in certificate parsing, that allows a
5343 client to crash the server remotely if client authentication is enabled
5344 (found using Codenomicon Defensics).
5345 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
5346 https://dl.acm.org/citation.cfm?id=2714625
5347
5348Bugfix
5349 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
5350 * Fix hardclock() (only used in the benchmarking program) with some
5351 versions of mingw64 (found by kxjhlele).
5352 * Fix warnings from mingw64 in timing.c (found by kxjklele).
5353 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
5354 platforms (found with Coverity Scan).
5355
5356= Version 1.2.13 released 2015-02-16
5357Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
5358 this will be made in the 1.2 branch at this point.
5359
5360Security
5361 * Fix remotely-triggerable uninitialised pointer dereference caused by
5362 crafted X.509 certificate (TLS server is not affected if it doesn't ask
5363 for a client certificate) (found using Codenomicon Defensics).
5364 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
5365 (TLS server is not affected if it doesn't ask for a client certificate)
5366 (found using Codenomicon Defensics).
5367 * Fix potential stack overflow while parsing crafted X.509 certificates
5368 (TLS server is not affected if it doesn't ask for a client certificate)
5369 found using Codenomicon Defensics).
5370 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
5371 (TLS server is not affected if it doesn't ask for a client certificate).
5372
5373Bugfix
5374 * Fix potential undefined behaviour in Camellia.
5375 * Fix memory leaks in PKCS#5 and PKCS#12.
5376 * Stack buffer overflow if ctr_drbg_update() is called with too large
5377 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
5378 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
5379 in 1.2.12).
5380 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
5381 Peter Vaskovic).
5382 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
5383 * ssl_get_verify_result() now works even if the handshake was aborted due
5384 to a failed verification (found by Fredrik Axelsson).
5385 * Skip writing and parsing signature_algorithm extension if none of the
5386 key exchanges enabled needs certificates. This fixes a possible interop
5387 issue with some servers when a zero-length extension was sent. (Reported
5388 by Peter Dettman.)
5389 * On a 0-length input, base64_encode() did not correctly set output length
5390 (found by Hendrik van den Boogaard).
5391
5392Changes
5393 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
5394 * Forbid repeated extensions in X.509 certificates.
5395 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
5396 length of an X.509 verification chain (default = 8).
Paul Bakkera6c5ea22014-10-24 16:26:29 +02005397= Version 1.2.12 released 2014-10-24
5398
5399Security
5400 * Remotely-triggerable memory leak when parsing some X.509 certificates
5401 (server is not affected if it doesn't ask for a client certificate).
5402 (Found using Codenomicon Defensics.)
5403
5404Bugfix
5405 * Fix potential bad read in parsing ServerHello (found by Adrien
5406 Vialletelle).
5407 * ssl_close_notify() could send more than one message in some circumstances
5408 with non-blocking I/O.
5409 * x509_crt_parse() did not increase total_failed on PEM error
5410 * Fix compiler warnings on iOS (found by Sander Niemeijer).
5411 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
5412 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
5413 * ssl_read() could return non-application data records on server while
5414 renegotation was pending, and on client when a HelloRequest was received.
5415 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
5416
5417Changes
5418 * X.509 certificates with more than one AttributeTypeAndValue per
5419 RelativeDistinguishedName are not accepted any more.
5420 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
5421 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
5422 * Accept spaces at end of line or end of buffer in base64_decode().
5423
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02005424= Version 1.2.11 released 2014-07-11
5425Features
5426 * Entropy module now supports seed writing and reading
5427
5428Changes
5429 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
5430 * Improvements to the CMake build system, contributed by Julian Ospald.
5431 * Work around a bug of the version of Clang shipped by Apple with Mavericks
5432 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
5433 * Improvements to tests/Makefile, contributed by Oden Eriksson.
5434 * Use UTC time to check certificate validity.
5435 * Reject certificates with times not in UTC, per RFC 5280.
5436 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
5437 against unwanted compiler optimizations
5438
5439Security
5440 * Forbid change of server certificate during renegotiation to prevent
5441 "triple handshake" attack when authentication mode is optional (the
5442 attack was already impossible when authentication is required).
5443 * Check notBefore timestamp of certificates and CRLs from the future.
5444 * Forbid sequence number wrapping
5445 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
5446 TrustInSoft)
5447 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
5448 It was possible to crash the server (and client) using crafted messages
5449 when a GCM suite was chosen.
5450
5451Bugfix
5452 * Fixed X.509 hostname comparison (with non-regular characters)
5453 * SSL now gracefully handles missing RNG
5454 * crypt_and_hash app checks MAC before final decryption
5455 * Fixed x509_crt_parse_path() bug on Windows platforms
5456 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
5457 TrustInSoft)
5458 * Fixed potential overflow in certificate size verification in
5459 ssl_write_certificate() (found by TrustInSoft)
5460 * Fix ASM format in bn_mul.h
5461 * Potential memory leak in bignum_selftest()
5462 * Replaced expired test certificate
5463 * ssl_mail_client now terminates lines with CRLF, instead of LF
5464 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
5465 * Fixed testing with out-of-source builds using cmake
5466 * Fixed version-major intolerance in server
5467 * Fixed CMake symlinking on out-of-source builds
5468 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
5469 Alex Wilson.)
5470 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
5471 out_ctr failed
5472 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
5473 of one of them failed
5474 * x509_get_current_time() uses localtime_r() to prevent thread issues
5475 * Some example server programs were not sending the close_notify alert.
5476 * Potential memory leak in mpi_exp_mod() when error occurs during
5477 calculation of RR.
5478 * Improve interoperability by not writing extension length in ClientHello
5479 when no extensions are present (found by Matthew Page)
5480 * rsa_check_pubkey() now allows an E up to N
5481 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
5482 * mpi_fill_random() was creating numbers larger than requested on
5483 big-endian platform when size was not an integer number of limbs
5484 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
5485 * Stricter check on SSL ClientHello internal sizes compared to actual packet
5486 size (found by TrustInSoft)
5487 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
5488 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
5489 interpret semicolons as comment delimiters (found by Barry K. Nathan).
5490 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
5491 * Fix base64_decode() to return and check length correctly (in case of
5492 tight buffers)
5493
Paul Bakker3a2c0562013-10-07 16:22:05 +02005494= Version 1.2.10 released 2013-10-07
5495Changes
5496 * Changed RSA blinding to a slower but thread-safe version
5497
5498Bugfix
5499 * Fixed memory leak in RSA as a result of introduction of blinding
5500 * Fixed ssl_pkcs11_decrypt() prototype
5501 * Fixed MSVC project files
5502
Paul Bakkerd93d28e2013-10-01 10:12:42 +02005503= Version 1.2.9 released 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02005504Changes
5505 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
5506
5507Bugfix
5508 * Fixed potential memory leak when failing to resume a session
5509 * Fixed potential file descriptor leaks (found by Remi Gacogne)
5510 * Minor fixes
5511
5512Security
5513 * Fixed potential heap buffer overflow on large hostname setting
5514 * Fixed potential negative value misinterpretation in load_file()
5515 * RSA blinding on CRT operations to counter timing attacks
5516 (found by Cyril Arnaud and Pierre-Alain Fouque)
5517
Paul Bakkerde656232013-06-24 19:07:34 +02005518= Version 1.2.8 released 2013-06-19
5519Features
5520 * Parsing of PKCS#8 encrypted private key files
5521 * PKCS#12 PBE and derivation functions
5522 * Centralized module option values in config.h to allow user-defined
5523 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
5524
5525Changes
5526 * HAVEGE random generator disabled by default
5527 * Internally split up x509parse_key() into a (PEM) handler function
5528 and specific DER parser functions for the PKCS#1 and unencrypted
5529 PKCS#8 private key formats
5530 * Added mechanism to provide alternative implementations for all
5531 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
Darryl Green11999bb2018-03-13 15:22:58 +00005532 config.h)
Paul Bakkerde656232013-06-24 19:07:34 +02005533 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
5534 old PBKDF2 module
5535
5536Bugfix
5537 * Secure renegotiation extension should only be sent in case client
5538 supports secure renegotiation
5539 * Fixed offset for cert_type list in ssl_parse_certificate_request()
5540 * Fixed const correctness issues that have no impact on the ABI
5541 * x509parse_crt() now better handles PEM error situations
5542 * ssl_parse_certificate() now calls x509parse_crt_der() directly
5543 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00005544 certificates
Paul Bakkerde656232013-06-24 19:07:34 +02005545 * x509parse_crtpath() is now reentrant and uses more portable stat()
5546 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
5547 * Fixed values for 2-key Triple DES in cipher layer
5548 * ssl_write_certificate_request() can handle empty ca_chain
5549
5550Security
5551 * A possible DoS during the SSL Handshake, due to faulty parsing of
5552 PEM-encoded certificates has been fixed (found by Jack Lloyd)
5553
5554= Version 1.2.7 released 2013-04-13
5555Features
5556 * Ability to specify allowed ciphersuites based on the protocol version.
5557
5558Changes
5559 * Default Blowfish keysize is now 128-bits
5560 * Test suites made smaller to accommodate Raspberry Pi
5561
5562Bugfix
5563 * Fix for MPI assembly for ARM
5564 * GCM adapted to support sizes > 2^29
5565
Paul Bakker90f042d2013-03-11 11:38:44 +01005566= Version 1.2.6 released 2013-03-11
Paul Bakkerc0463502013-02-14 11:19:38 +01005567Bugfix
5568 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01005569 * Corrected GCM counter incrementation to use only 32-bits instead of
5570 128-bits (found by Yawning Angel)
Paul Bakkere3e4a592013-02-28 10:20:53 +01005571 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakker37286a52013-03-06 16:55:11 +01005572 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01005573 * Fixed assembly code for ARM (Thumb and regular) for some compilers
Paul Bakkerc0463502013-02-14 11:19:38 +01005574
Paul Bakkerb3869132013-02-28 17:21:01 +01005575Changes
5576 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
5577 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
5578 PKCS#1 v2.1 functions
Paul Bakkera43231c2013-02-28 17:33:49 +01005579 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
5580 or rsa_rsaes_oaep_decrypt()
Paul Bakker78a8c712013-03-06 17:01:52 +01005581 * Re-added handling for SSLv2 Client Hello when the define
5582 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkere81beda2013-03-06 17:40:46 +01005583 * The SSL session cache module (ssl_cache) now also retains peer_cert
5584 information (not the entire chain)
Paul Bakkerb3869132013-02-28 17:21:01 +01005585
Paul Bakkere47b34b2013-02-27 14:48:00 +01005586Security
5587 * Removed further timing differences during SSL message decryption in
5588 ssl_decrypt_buf()
Paul Bakker8804f692013-02-28 18:06:26 +01005589 * Removed timing differences due to bad padding from
5590 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
5591 operations
Paul Bakkere47b34b2013-02-27 14:48:00 +01005592
Paul Bakkerc7a2da42013-02-02 19:23:57 +01005593= Version 1.2.5 released 2013-02-02
Paul Bakker8fe40dc2013-02-02 12:43:08 +01005594Changes
5595 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakkerd66f0702013-01-31 16:57:45 +01005596 * Debug messages about padding errors during SSL message decryption are
Hanno Becker01a0e072017-07-26 11:49:40 +01005597 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakker40865c82013-01-31 17:13:13 +01005598 * Sending of security-relevant alert messages that do not break
5599 interoperability can be switched on/off with the flag
Paul Bakkera35aa542013-03-06 17:06:21 +01005600 POLARSSL_SSL_ALL_ALERT_MESSAGES
Paul Bakker8fe40dc2013-02-02 12:43:08 +01005601
Paul Bakker45829992013-01-03 14:52:21 +01005602Security
5603 * Removed timing differences during SSL message decryption in
5604 ssl_decrypt_buf() due to badly formatted padding
5605
Paul Bakker14c56a32013-01-25 17:11:37 +01005606= Version 1.2.4 released 2013-01-25
Paul Bakker1961b702013-01-25 14:49:24 +01005607Changes
Paul Bakker68884e32013-01-07 18:20:04 +01005608 * More advanced SSL ciphersuite representation and moved to more dynamic
5609 SSL core
Paul Bakker1961b702013-01-25 14:49:24 +01005610 * Added ssl_handshake_step() to allow single stepping the handshake process
5611
Paul Bakker40628ba2013-01-03 10:50:31 +01005612Bugfix
5613 * Memory leak when using RSA_PKCS_V21 operations fixed
Paul Bakker21dca692013-01-03 11:41:08 +01005614 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker9c94cdd2013-01-22 13:45:33 +01005615 * Correctly handle CertificateRequest message in client for <= TLS 1.1
5616 without DN list
Paul Bakker40628ba2013-01-03 10:50:31 +01005617
Paul Bakkerfb1ba782012-11-26 16:28:25 +01005618= Version 1.2.3 released 2012-11-26
5619Bugfix
5620 * Server not always sending correct CertificateRequest message
5621
Paul Bakkerdf5069c2012-11-24 12:20:19 +01005622= Version 1.2.2 released 2012-11-24
Paul Bakkere667c982012-11-20 13:50:22 +01005623Changes
5624 * Added p_hw_data to ssl_context for context specific hardware acceleration
5625 data
Hanno Becker01a0e072017-07-26 11:49:40 +01005626 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkere667c982012-11-20 13:50:22 +01005627
Paul Bakker7c90da92012-11-23 14:02:40 +01005628Bugfixes
Paul Bakkerdf5069c2012-11-24 12:20:19 +01005629 * Fixed client authentication compatibility
5630 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker7c90da92012-11-23 14:02:40 +01005631
Paul Bakker14926332012-11-20 10:58:09 +01005632= Version 1.2.1 released 2012-11-20
Paul Bakker34d8dbc2012-11-14 12:11:38 +00005633Changes
5634 * Depth that the certificate verify callback receives is now numbered
5635 bottom-up (Peer cert depth is 0)
5636
Paul Bakker7a2538e2012-11-02 10:59:36 +00005637Bugfixes
5638 * Fixes for MSVC6
Paul Bakkerd9374b02012-11-02 11:02:58 +00005639 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Paul Bakkerf02c5642012-11-13 10:25:21 +00005640 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
5641 Pégourié-Gonnard)
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01005642 * Fixed possible segfault in mpi_shift_r() (found by Manuel
5643 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00005644 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakker7a2538e2012-11-02 10:59:36 +00005645
Paul Bakkerc9c5df92012-10-31 13:55:27 +00005646= Version 1.2.0 released 2012-10-31
Paul Bakkerfab5c822012-02-06 16:45:10 +00005647Features
5648 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
5649 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
5650 default!
Paul Bakkera8cd2392012-02-11 16:09:32 +00005651 * Added support for wildcard certificates
5652 * Added support for multi-domain certificates through the X509 Subject
5653 Alternative Name extension
Paul Bakkerbdb912d2012-02-13 23:11:30 +00005654 * Added preliminary ASN.1 buffer writing support
5655 * Added preliminary X509 Certificate Request writing support
5656 * Added key_app_writer example application
5657 * Added cert_req example application
Paul Bakker89e80c92012-03-20 13:50:09 +00005658 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker48916f92012-09-16 19:57:18 +00005659 * Added TLS 1.2 support (RFC 5246)
Paul Bakkerca4ab492012-04-18 14:23:57 +00005660 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakker01cc3942012-05-08 08:36:15 +00005661 * Added commandline error code convertor (util/strerror)
Paul Bakker05ef8352012-05-08 09:17:57 +00005662 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakkere6ee41f2012-05-19 08:43:48 +00005663 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakkerc9c5df92012-10-31 13:55:27 +00005664 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker8d914582012-06-04 12:46:42 +00005665 * Added X509 CA Path support
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00005666 * Added Thumb assembly optimizations
Paul Bakker2770fbd2012-07-03 13:30:23 +00005667 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker6132d0a2012-07-04 17:10:40 +00005668 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakkerf518b162012-08-23 13:03:18 +00005669 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker48916f92012-09-16 19:57:18 +00005670 * Added Secure Renegotiation (RFC 5746)
Paul Bakker29b64762012-09-25 09:36:44 +00005671 * Added predefined DHM groups from RFC 5114
Paul Bakker0a597072012-09-25 21:55:46 +00005672 * Added simple SSL session cache implementation
Paul Bakker5701cdc2012-09-27 21:49:42 +00005673 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1d29fb52012-09-28 13:28:45 +00005674 * Added option to add minimum accepted SSL/TLS protocol version
Paul Bakkerfab5c822012-02-06 16:45:10 +00005675
Paul Bakker1504af52012-02-11 16:17:43 +00005676Changes
5677 * Removed redundant POLARSSL_DEBUG_MSG define
Paul Bakker048d04e2012-02-12 17:31:04 +00005678 * AES code only check for Padlock once
Paul Bakker6b906e52012-05-08 12:01:43 +00005679 * Fixed const-correctness mpi_get_bit()
5680 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker186751d2012-05-08 13:16:14 +00005681 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker4d2c1242012-05-10 14:12:46 +00005682 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
Paul Bakker5b377842012-05-16 07:57:36 +00005683 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakker6132d0a2012-07-04 17:10:40 +00005684 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
5685 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkerec636f32012-09-09 19:17:02 +00005686 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
Paul Bakker0a597072012-09-25 21:55:46 +00005687 * Revamped session resumption handling
Paul Bakkereb2c6582012-09-27 19:15:01 +00005688 * Generalized external private key implementation handling (like PKCS#11)
5689 in SSL/TLS
Paul Bakker915275b2012-09-28 07:10:55 +00005690 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker5c2364c2012-10-01 14:41:15 +00005691 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker645ce3a2012-10-31 12:32:41 +00005692 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker1504af52012-02-11 16:17:43 +00005693
Paul Bakker37824582012-03-22 14:10:22 +00005694Bugfix
Paul Bakker7beceb22012-03-22 14:19:49 +00005695 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
5696 Hui Dong)
Paul Bakker430ffbe2012-05-01 08:14:20 +00005697 * Fixed potential heap corruption in x509_name allocation
Paul Bakker5b377842012-05-16 07:57:36 +00005698 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkerf6198c12012-05-16 08:02:29 +00005699 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
5700 #52)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00005701 * Handle encryption with private key and decryption with public key as per
Darryl Green11999bb2018-03-13 15:22:58 +00005702 RFC 2313
Paul Bakkercefb3962012-06-27 11:51:09 +00005703 * Handle empty certificate subject names
Paul Bakker535e97d2012-08-23 10:49:55 +00005704 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00005705 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker995a2152012-09-25 08:19:56 +00005706 with carry rollover (found by Ruslan Yushchenko)
Paul Bakkerb00ca422012-09-25 12:10:00 +00005707 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker4f024b72012-10-30 07:29:57 +00005708 * Fixed MPI assembly for SPARC64 platform
Paul Bakker37824582012-03-22 14:10:22 +00005709
Paul Bakker452d5322012-04-05 12:07:34 +00005710Security
Paul Bakker3c16db92012-07-05 13:58:08 +00005711 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
5712 Vanderbeken)
Paul Bakker452d5322012-04-05 12:07:34 +00005713
Paul Bakkerd93d28e2013-10-01 10:12:42 +02005714= Version 1.1.8 released on 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02005715Bugfix
5716 * Fixed potential memory leak when failing to resume a session
5717 * Fixed potential file descriptor leaks
5718
5719Security
5720 * Potential buffer-overflow for ssl_read_record() (independently found by
5721 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
5722 * Potential negative value misinterpretation in load_file()
5723 * Potential heap buffer overflow on large hostname setting
5724
Paul Bakker248fff52013-06-24 19:08:50 +02005725= Version 1.1.7 released on 2013-06-19
5726Changes
5727 * HAVEGE random generator disabled by default
5728
5729Bugfix
5730 * x509parse_crt() now better handles PEM error situations
5731 * ssl_parse_certificate() now calls x509parse_crt_der() directly
5732 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00005733 certificates
Paul Bakker248fff52013-06-24 19:08:50 +02005734 * Fixed values for 2-key Triple DES in cipher layer
5735 * ssl_write_certificate_request() can handle empty ca_chain
5736
5737Security
5738 * A possible DoS during the SSL Handshake, due to faulty parsing of
5739 PEM-encoded certificates has been fixed (found by Jack Lloyd)
5740
5741= Version 1.1.6 released on 2013-03-11
5742Bugfix
5743 * Fixed net_bind() for specified IP addresses on little endian systems
5744
5745Changes
5746 * Allow enabling of dummy error_strerror() to support some use-cases
5747 * Debug messages about padding errors during SSL message decryption are
5748 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
5749
5750Security
5751 * Removed timing differences during SSL message decryption in
5752 ssl_decrypt_buf()
5753 * Removed timing differences due to bad padding from
5754 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
5755 operations
5756
Paul Bakker9d2bb652013-01-25 16:07:49 +01005757= Version 1.1.5 released on 2013-01-16
5758Bugfix
5759 * Fixed MPI assembly for SPARC64 platform
5760 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
5761 * mpi_add_abs() now correctly handles adding short numbers to long numbers
5762 with carry rollover
5763 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
5764 * Prevent reading over buffer boundaries on X509 certificate parsing
5765 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
5766 #52)
5767 * Fixed possible segfault in mpi_shift_r() (found by Manuel
5768 Pégourié-Gonnard)
5769 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
5770 Pégourié-Gonnard)
5771 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
5772 * Memory leak when using RSA_PKCS_V21 operations fixed
5773 * Handle encryption with private key and decryption with public key as per
5774 RFC 2313
5775 * Fixes for MSVC6
5776
5777Security
5778 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
5779 Vanderbeken)
5780
Paul Bakkerd5834bb2012-10-02 14:38:56 +00005781= Version 1.1.4 released on 2012-05-31
5782Bugfix
5783 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
5784 * Fixed potential heap corruption in x509_name allocation
5785 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
5786
Paul Bakkerfad38932012-05-08 09:04:04 +00005787= Version 1.1.3 released on 2012-04-29
5788Bugfix
5789 * Fixed random MPI generation to not generate more size than requested.
5790
5791= Version 1.1.2 released on 2012-04-26
5792Bugfix
5793 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
5794 Hui Dong)
5795
5796Security
5797 * Fixed potential memory corruption on miscrafted client messages (found by
5798 Frama-C team at CEA LIST)
5799 * Fixed generation of DHM parameters to correct length (found by Ruslan
5800 Yushchenko)
5801
Paul Bakker99955bf2012-01-23 09:31:41 +00005802= Version 1.1.1 released on 2012-01-23
Paul Bakkerb15b8512012-01-13 13:44:06 +00005803Bugfix
5804 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
5805 (Closes ticket #47, found by Hugo Leisink)
Paul Bakker2ec0a562012-01-21 05:41:23 +00005806 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakker99955bf2012-01-23 09:31:41 +00005807 * Fixed multiple compiler warnings for VS6 and armcc
5808 * Fixed bug in CTR_CRBG selftest
Paul Bakkerb15b8512012-01-13 13:44:06 +00005809
Paul Bakker08a50882011-12-22 09:43:57 +00005810= Version 1.1.0 released on 2011-12-22
Paul Bakker7eb013f2011-10-06 12:37:39 +00005811Features
5812 * Added ssl_session_reset() to allow better multi-connection pools of
5813 SSL contexts without needing to set all non-connection-specific
Darryl Green11999bb2018-03-13 15:22:58 +00005814 data and pointers again. Adapted ssl_server to use this functionality.
Paul Bakker490ecc82011-10-06 13:04:09 +00005815 * Added ssl_set_max_version() to allow clients to offer a lower maximum
5816 supported version to a server to help buggy server implementations.
Darryl Green11999bb2018-03-13 15:22:58 +00005817 (Closes ticket #36)
Paul Bakker03a30d32011-11-11 10:55:02 +00005818 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
5819 introspection functions (Closes ticket #40)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00005820 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Paul Bakker6083fd22011-12-03 21:45:14 +00005821 * Added a generic entropy accumulator that provides support for adding
5822 custom entropy sources and added some generic and platform dependent
Darryl Green11999bb2018-03-13 15:22:58 +00005823 entropy sources
Paul Bakker7eb013f2011-10-06 12:37:39 +00005824
Paul Bakkerca6f3e22011-10-06 13:11:08 +00005825Changes
5826 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerd246ed32011-10-06 13:18:27 +00005827 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
5828 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerc4909d92011-10-12 09:52:22 +00005829 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerfbc09f32011-10-12 09:56:41 +00005830 * Added an EXPLICIT tag number parameter to x509_get_ext()
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00005831 * Added a separate CRL entry extension parsing function
Paul Bakkerefc30292011-11-10 14:43:23 +00005832 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
5833 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakker5e18aed2011-11-15 15:38:45 +00005834 * Changed the defined key-length of DES ciphers in cipher.h to include the
5835 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkercce9d772011-11-18 14:26:47 +00005836 * Loads of minimal changes to better support WINCE as a build target
Paul Bakker2e6d5322011-11-18 14:34:17 +00005837 (Credits go to Marco Lizza)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00005838 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
5839 trade-off
Paul Bakkerfe3256e2011-11-25 12:11:43 +00005840 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
5841 management (Closes ticket #44)
Paul Bakkera3d195c2011-11-27 21:07:34 +00005842 * Changed the used random function pointer to more flexible format. Renamed
5843 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakkera35aa542013-03-06 17:06:21 +01005844 a consequence in library code and programs
Paul Bakker508ad5a2011-12-04 17:09:26 +00005845 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakker6c0ceb32011-12-04 12:24:18 +00005846 * Added permissive certificate parsing to x509parse_crt() and
5847 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakkera35aa542013-03-06 17:06:21 +01005848 encountering a parse-error. Beware that the meaning of return values has
5849 changed!
Paul Bakker69e095c2011-12-10 21:55:01 +00005850 * All error codes are now negative. Even on mermory failures and IO errors.
Paul Bakkerca6f3e22011-10-06 13:11:08 +00005851
Paul Bakkerfa1c5922011-10-06 14:18:49 +00005852Bugfix
5853 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
5854 ticket #37)
Paul Bakker3329d1f2011-10-12 09:55:01 +00005855 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
5856 before version numbers
Paul Bakkercebdf172011-11-11 15:01:31 +00005857 * Allowed X509 key usage parsing to accept 4 byte values instead of the
5858 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00005859 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
5860 smaller than the hash length. (Closes ticket #41)
Paul Bakker03c7c252011-11-25 12:37:37 +00005861 * If certificate serial is longer than 32 octets, serial number is now
5862 appended with '....' after first 28 octets
Paul Bakker44637402011-11-26 09:23:07 +00005863 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakker4f5ae802011-12-04 22:10:28 +00005864 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerc50132d2011-12-05 14:38:36 +00005865 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00005866 certificates and CRLs
Paul Bakkerfa1c5922011-10-06 14:18:49 +00005867
Paul Bakker968bc982011-07-27 17:03:00 +00005868= Version 1.0.0 released on 2011-07-27
Paul Bakker343a8702011-06-09 14:27:58 +00005869Features
5870 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker7bc05ff2011-08-09 10:30:36 +00005871 * Added rsa_encrypt and rsa_decrypt simple example programs.
Paul Bakker343a8702011-06-09 14:27:58 +00005872
Paul Bakker42e59812011-06-09 15:55:41 +00005873Changes
5874 * The generic cipher and message digest layer now have normal error
5875 codes instead of integers
5876
Paul Bakker887bd502011-06-08 13:10:54 +00005877Bugfix
5878 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
5879 #18)
5880
Paul Bakker828acb22011-05-27 09:25:42 +00005881= Version 0.99-pre5 released on 2011-05-26
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00005882Features
5883 * Added additional Cipher Block Modes to symmetric ciphers
5884 (AES CTR, Camellia CTR, XTEA CBC) including the option to
Paul Bakkera35aa542013-03-06 17:06:21 +01005885 enable and disable individual modes when needed
Paul Bakker335db3f2011-04-25 15:28:35 +00005886 * Functions requiring File System functions can now be disabled
5887 by undefining POLARSSL_FS_IO
Paul Bakker9d781402011-05-09 16:17:09 +00005888 * A error_strerror function() has been added to translate between
5889 error codes and their description.
Paul Bakker2f5947e2011-05-18 15:47:11 +00005890 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
5891 functions.
Paul Bakker1496d382011-05-23 12:07:29 +00005892 * Added ssl_mail_client and ssl_fork_server as example programs.
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00005893
Paul Bakker23986e52011-04-24 08:57:21 +00005894Changes
5895 * Major argument / variable rewrite. Introduced use of size_t
5896 instead of int for buffer lengths and loop variables for
Paul Bakkera35aa542013-03-06 17:06:21 +01005897 better unsigned / signed use. Renamed internal bigint types
5898 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker6c591fa2011-05-05 11:49:20 +00005899 * mpi_init() and mpi_free() now only accept a single MPI
5900 argument and do not accept variable argument lists anymore.
Paul Bakker9d781402011-05-09 16:17:09 +00005901 * The error codes have been remapped and combining error codes
5902 is now done with a PLUS instead of an OR as error codes
Paul Bakkera35aa542013-03-06 17:06:21 +01005903 used are negative.
Paul Bakker831a7552011-05-18 13:32:51 +00005904 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
5905 net_recv() now returns 0 on EOF instead of
Paul Bakkera35aa542013-03-06 17:06:21 +01005906 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
5907 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
5908 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
5909 after the handshake.
Paul Bakker831a7552011-05-18 13:32:51 +00005910 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
5911 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakkera35aa542013-03-06 17:06:21 +01005912 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker23986e52011-04-24 08:57:21 +00005913
Paul Bakker3efa5752011-04-01 12:23:26 +00005914= Version 0.99-pre4 released on 2011-04-01
Paul Bakker9dcc3222011-03-08 14:16:06 +00005915Features
5916 * Added support for PKCS#1 v2.1 encoding and thus support
5917 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakkere77db2e2011-03-25 14:01:32 +00005918 * Reading of Public Key files incorporated into default x509
5919 functionality as well.
Paul Bakker287781a2011-03-26 13:18:49 +00005920 * Added mpi_fill_random() for centralized filling of big numbers
5921 with random data (Fixed ticket #10)
Paul Bakker9dcc3222011-03-08 14:16:06 +00005922
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005923Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01005924 * Debug print of MPI now removes leading zero octets and
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005925 displays actual bit size of the value.
Hanno Becker01a0e072017-07-26 11:49:40 +01005926 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakker98675492011-03-26 13:17:12 +00005927 does not zeroize memory in advance anymore. Use rsa_init()
Paul Bakkera35aa542013-03-06 17:06:21 +01005928 before parsing a key or keyfile!
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005929
5930Bugfix
5931 * Debug output of MPI's now the same independent of underlying
5932 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
Paul Bakkera35aa542013-03-06 17:06:21 +01005933 Kiilerich and Mihai Militaru)
Paul Bakker1fd00bf2011-03-14 20:50:15 +00005934 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
5935 #18, found by Nikolay Epifanov)
Paul Bakkere77db2e2011-03-25 14:01:32 +00005936 * Fixed proper handling of RSASSA-PSS verification with variable
5937 length salt lengths
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00005938
Paul Bakker345a6fe2011-02-28 21:20:02 +00005939= Version 0.99-pre3 released on 2011-02-28
5940This release replaces version 0.99-pre2 which had possible copyright issues.
Paul Bakker96743fc2011-02-12 14:30:57 +00005941Features
5942 * Parsing PEM private keys encrypted with DES and AES
5943 are now supported as well (Fixes ticket #5)
Paul Bakkera9507c02011-02-12 15:27:28 +00005944 * Added crl_app program to allow easy reading and
5945 printing of X509 CRLs from file
Paul Bakker96743fc2011-02-12 14:30:57 +00005946
5947Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01005948 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00005949 ticket #13). Also possible to remove PEM support for
Paul Bakkera35aa542013-03-06 17:06:21 +01005950 systems only using DER encoding
Paul Bakker96743fc2011-02-12 14:30:57 +00005951
Paul Bakker400ff6f2011-02-20 10:40:16 +00005952Bugfixes
5953 * Corrected parsing of UTCTime dates before 1990 and
5954 after 1950
5955 * Support more exotic OID's when parsing certificates
Darryl Green11999bb2018-03-13 15:22:58 +00005956 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005957 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00005958 certificates (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005959 * Replaced the expired test certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00005960 * Do not bail out if no client certificate specified. Try
5961 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakkera35aa542013-03-06 17:06:21 +01005962 found by Boris Krasnovskiy)
Paul Bakker400ff6f2011-02-20 10:40:16 +00005963
Paul Bakker345a6fe2011-02-28 21:20:02 +00005964Security fixes
5965 * Fixed a possible Man-in-the-Middle attack on the
5966 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakkera35aa542013-03-06 17:06:21 +01005967 Subreption LLC)
Paul Bakker345a6fe2011-02-28 21:20:02 +00005968
Paul Bakker9fc46592011-01-30 16:59:02 +00005969= Version 0.99-pre1 released on 2011-01-30
Paul Bakker37ca75d2011-01-06 12:28:03 +00005970Features
Paul Bakkerb63b0af2011-01-13 17:54:59 +00005971Note: Most of these features have been donated by Fox-IT
5972 * Added Doxygen source code documentation parts
Paul Bakker1b57b062011-01-06 15:48:19 +00005973 * Added reading of DHM context from memory and file
Paul Bakker74111d32011-01-15 16:57:55 +00005974 * Improved X509 certificate parsing to include extended
Paul Bakker76fd75a2011-01-16 21:12:10 +00005975 certificate fields, including Key Usage
5976 * Improved certificate verification and verification
5977 against the available CRLs
Paul Bakker1f87fb62011-01-15 17:32:24 +00005978 * Detection for DES weak keys and parity bits added
Paul Bakker72f62662011-01-16 21:27:44 +00005979 * Improvements to support integration in other
5980 applications:
5981 + Added generic message digest and cipher wrapper
5982 + Improved information about current capabilities,
5983 status, objects and configuration
5984 + Added verification callback on certificate chain
5985 verification to allow external blacklisting
Darryl Green11999bb2018-03-13 15:22:58 +00005986 + Additional example programs to show usage
Paul Bakker43b7e352011-01-18 15:27:19 +00005987 * Added support for PKCS#11 through the use of the
5988 libpkcs11-helper library
Paul Bakker37ca75d2011-01-06 12:28:03 +00005989
Paul Bakkerb6194992011-01-16 21:40:22 +00005990Changes
5991 * x509parse_time_expired() checks time in addition to
5992 the existing date check
Paul Bakkere3166ce2011-01-27 17:40:50 +00005993 * The ciphers member of ssl_context and the cipher member
5994 of ssl_session have been renamed to ciphersuites and
Paul Bakkera35aa542013-03-06 17:06:21 +01005995 ciphersuite respectively. This clarifies the difference
5996 with the generic cipher layer and is better naming
5997 altogether
Paul Bakkerb6194992011-01-16 21:40:22 +00005998
Paul Bakker99ed6782011-01-05 14:48:42 +00005999= Version 0.14.0 released on 2010-08-16
6000Features
6001 * Added support for SSL_EDH_RSA_AES_128_SHA and
6002 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
6003 * Added compile-time and run-time version information
6004 * Expanded ssl_client2 arguments for more flexibility
6005 * Added support for TLS v1.1
6006
6007Changes
6008 * Made Makefile cleaner
6009 * Removed dependency on rand() in rsa_pkcs1_encrypt().
6010 Now using random fuction provided to function and
Paul Bakkera35aa542013-03-06 17:06:21 +01006011 changed the prototype of rsa_pkcs1_encrypt(),
6012 rsa_init() and rsa_gen_key().
Paul Bakker99ed6782011-01-05 14:48:42 +00006013 * Some SSL defines were renamed in order to avoid
6014 future confusion
6015
6016Bug fixes
6017 * Fixed CMake out of source build for tests (found by
6018 kkert)
6019 * rsa_check_private() now supports PKCS1v2 keys as well
6020 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
6021 generator
6022
6023= Version 0.13.1 released on 2010-03-24
6024Bug fixes
6025 * Fixed Makefile in library that was mistakenly merged
6026 * Added missing const string fixes
6027
6028= Version 0.13.0 released on 2010-03-21
6029Features
6030 * Added option parsing for host and port selection to
6031 ssl_client2
6032 * Added support for GeneralizedTime in X509 parsing
6033 * Added cert_app program to allow easy reading and
6034 printing of X509 certificates from file or SSL
6035 connection.
6036
6037Changes
6038 * Added const correctness for main code base
6039 * X509 signature algorithm determination is now
6040 in a function to allow easy future expansion
6041 * Changed symmetric cipher functions to
6042 identical interface (returning int result values)
Paul Bakker60b1d102013-10-29 10:02:51 +01006043 * Changed ARC4 to use separate input/output buffer
Paul Bakker99ed6782011-01-05 14:48:42 +00006044 * Added reset function for HMAC context as speed-up
6045 for specific use-cases
6046
6047Bug fixes
6048 * Fixed bug resulting in failure to send the last
6049 certificate in the chain in ssl_write_certificate() and
6050 ssl_write_certificate_request() (found by fatbob)
6051 * Added small fixes for compiler warnings on a Mac
6052 (found by Frank de Brabander)
6053 * Fixed algorithmic bug in mpi_is_prime() (found by
6054 Smbat Tonoyan)
6055
6056= Version 0.12.1 released on 2009-10-04
6057Changes
6058 * Coverage test definitions now support 'depends_on'
6059 tagging system.
6060 * Tests requiring specific hashing algorithms now honor
6061 the defines.
6062
6063Bug fixes
6064 * Changed typo in #ifdef in x509parse.c (found
6065 by Eduardo)
6066
6067= Version 0.12.0 released on 2009-07-28
6068Features
6069 * Added CMake makefiles as alternative to regular Makefiles.
6070 * Added preliminary Code Coverage tests for AES, ARC4,
6071 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
6072 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
6073 and X509parse.
6074
6075Changes
6076 * Error codes are not (necessarily) negative. Keep
6077 this is mind when checking for errors.
6078 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
6079 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
6080 * Changed interface for AES and Camellia setkey functions
6081 to indicate invalid key lengths.
6082
6083Bug fixes
6084 * Fixed include location of endian.h on FreeBSD (found by
6085 Gabriel)
6086 * Fixed include location of endian.h and name clash on
6087 Apples (found by Martin van Hensbergen)
6088 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
6089 required HMAC ipad and opad variables are not cleared.
6090 (found by code coverage tests)
Hanno Becker01a0e072017-07-26 11:49:40 +01006091 * Prevented use of long long in bignum if
Paul Bakker99ed6782011-01-05 14:48:42 +00006092 POLARSSL_HAVE_LONGLONG not defined (found by Giles
6093 Bathgate).
6094 * Fixed incorrect handling of negative strings in
6095 mpi_read_string() (found by code coverage tests).
6096 * Fixed segfault on handling empty rsa_context in
6097 rsa_check_pubkey() and rsa_check_privkey() (found by
6098 code coverage tests).
6099 * Fixed incorrect handling of one single negative input
6100 value in mpi_add_abs() (found by code coverage tests).
6101 * Fixed incorrect handling of negative first input
6102 value in mpi_sub_abs() (found by code coverage tests).
6103 * Fixed incorrect handling of negative first input
6104 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
6105 change also affects mpi_write_string() (found by code
6106 coverage tests).
6107 * Corrected is_prime() results for 0, 1 and 2 (found by
6108 code coverage tests).
6109 * Fixed Camellia and XTEA for 64-bit Windows systems.
6110
6111= Version 0.11.1 released on 2009-05-17
6112 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
6113 SHA-512 in rsa_pkcs1_sign()
6114
6115= Version 0.11.0 released on 2009-05-03
6116 * Fixed a bug in mpi_gcd() so that it also works when both
6117 input numbers are even and added testcases to check
6118 (found by Pierre Habouzit).
6119 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
6120 one way hash functions with the PKCS#1 v1.5 signing and
6121 verification.
6122 * Fixed minor bug regarding mpi_gcd located within the
6123 POLARSSL_GENPRIME block.
6124 * Fixed minor memory leak in x509parse_crt() and added better
6125 handling of 'full' certificate chains (found by Mathias
6126 Olsson).
6127 * Centralized file opening and reading for x509 files into
6128 load_file()
6129 * Made definition of net_htons() endian-clean for big endian
6130 systems (Found by Gernot).
6131 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
Hanno Becker01a0e072017-07-26 11:49:40 +01006132 padlock and timing code.
Paul Bakker99ed6782011-01-05 14:48:42 +00006133 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
6134 responsible for crashes and unwanted behaviour.
6135 * Added support for Certificate Revocation List (CRL) parsing.
6136 * Added support for CRL revocation to x509parse_verify() and
6137 SSL/TLS code.
6138 * Fixed compatibility of XTEA and Camellia on a 64-bit system
6139 (found by Felix von Leitner).
6140
6141= Version 0.10.0 released on 2009-01-12
6142 * Migrated XySSL to PolarSSL
6143 * Added XTEA symmetric cipher
6144 * Added Camellia symmetric cipher
6145 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
6146 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
6147 * Fixed dangerous bug that can cause a heap overflow in
6148 rsa_pkcs1_decrypt (found by Christophe Devine)
6149
6150================================================================
6151XySSL ChangeLog
6152
6153= Version 0.9 released on 2008-03-16
6154
6155 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
6156 * Enabled support for large files by default in aescrypt2.c
6157 * Preliminary openssl wrapper contributed by David Barrett
6158 * Fixed a bug in ssl_write() that caused the same payload to
6159 be sent twice in non-blocking mode when send returns EAGAIN
6160 * Fixed ssl_parse_client_hello(): session id and challenge must
6161 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
6162 * Added user-defined callback debug function (Krystian Kolodziej)
6163 * Before freeing a certificate, properly zero out all cert. data
6164 * Fixed the "mode" parameter so that encryption/decryption are
6165 not swapped on PadLock; also fixed compilation on older versions
6166 of gcc (bug reported by David Barrett)
6167 * Correctly handle the case in padlock_xcryptcbc() when input or
Antonin Décimo36e89b52019-01-23 15:24:37 +01006168 output data is non-aligned by falling back to the software
Paul Bakker99ed6782011-01-05 14:48:42 +00006169 implementation, as VIA Nehemiah cannot handle non-aligned buffers
6170 * Fixed a memory leak in x509parse_crt() which was reported by Greg
6171 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
6172 Matthew Page who reported several bugs
6173 * Fixed x509_get_ext() to accept some rare certificates which have
6174 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
6175 * Added support on the client side for the TLS "hostname" extension
6176 (patch contributed by David Patino)
6177 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
6178 string is passed as the CN (bug reported by spoofy)
6179 * Added an option to enable/disable the BN assembly code
6180 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
6181 * Disabled obsolete hash functions by default (MD2, MD4); updated
6182 selftest and benchmark to not test ciphers that have been disabled
6183 * Updated x509parse_cert_info() to correctly display byte 0 of the
6184 serial number, setup correct server port in the ssl client example
6185 * Fixed a critical denial-of-service with X.509 cert. verification:
6186 peer may cause xyssl to loop indefinitely by sending a certificate
6187 for which the RSA signature check fails (bug reported by Benoit)
6188 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
6189 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
6190 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
6191 * Modified ssl_parse_client_key_exchange() to protect against
6192 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
6193 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
6194 * Updated rsa_gen_key() so that ctx->N is always nbits in size
6195 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
6196 David Barrett and Dusan Semen
6197
6198= Version 0.8 released on 2007-10-20
6199
6200 * Modified the HMAC functions to handle keys larger
6201 than 64 bytes, thanks to Stephane Desneux and gary ng
6202 * Fixed ssl_read_record() to properly update the handshake
6203 message digests, which fixes IE6/IE7 client authentication
6204 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
6205 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
6206 * Added user-defined callbacks for handling I/O and sessions
6207 * Added lots of debugging output in the SSL/TLS functions
6208 * Added preliminary X.509 cert. writing by Pascal Vizeli
6209 * Added preliminary support for the VIA PadLock routines
6210 * Added AES-CFB mode of operation, contributed by chmike
6211 * Added an SSL/TLS stress testing program (ssl_test.c)
6212 * Updated the RSA PKCS#1 code to allow choosing between
6213 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
6214 * Updated ssl_read() to skip 0-length records from OpenSSL
6215 * Fixed the make install target to comply with *BSD make
6216 * Fixed a bug in mpi_read_binary() on 64-bit platforms
6217 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
6218 * Fixed a long standing memory leak in mpi_is_prime()
6219 * Replaced realloc with malloc in mpi_grow(), and set
6220 the sign of zero as positive in mpi_init() (reported
6221 by Jonathan M. McCune)
6222
6223= Version 0.7 released on 2007-07-07
6224
6225 * Added support for the MicroBlaze soft-core processor
6226 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
6227 connections from being established with non-blocking I/O
6228 * Fixed a couple bugs in the VS6 and UNIX Makefiles
6229 * Fixed the "PIC register ebx clobbered in asm" bug
6230 * Added HMAC starts/update/finish support functions
6231 * Added the SHA-224, SHA-384 and SHA-512 hash functions
6232 * Fixed the net_set_*block routines, thanks to Andreas
6233 * Added a few demonstration programs: md5sum, sha1sum,
6234 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
6235 * Added new bignum import and export helper functions
6236 * Rewrote README.txt in program/ssl/ca to better explain
6237 how to create a test PKI
6238
6239= Version 0.6 released on 2007-04-01
6240
6241 * Ciphers used in SSL/TLS can now be disabled at compile
6242 time, to reduce the memory footprint on embedded systems
6243 * Added multiply assembly code for the TriCore and modified
6244 havege_struct for this processor, thanks to David Patiño
6245 * Added multiply assembly code for 64-bit PowerPCs,
6246 thanks to Peking University and the OSU Open Source Lab
6247 * Added experimental support of Quantum Cryptography
6248 * Added support for autoconf, contributed by Arnaud Cornet
6249 * Fixed "long long" compilation issues on IA-64 and PPC64
6250 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
6251 was not being correctly defined on ARM and MIPS
6252
6253= Version 0.5 released on 2007-03-01
6254
6255 * Added multiply assembly code for SPARC and Alpha
6256 * Added (beta) support for non-blocking I/O operations
6257 * Implemented session resuming and client authentication
6258 * Fixed some portability issues on WinCE, MINIX 3, Plan9
6259 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
6260 * Improved the performance of the EDH key exchange
6261 * Fixed a bug that caused valid packets with a payload
6262 size of 16384 bytes to be rejected
6263
6264= Version 0.4 released on 2007-02-01
6265
6266 * Added support for Ephemeral Diffie-Hellman key exchange
6267 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
6268 * Various improvement to the modular exponentiation code
6269 * Rewrote the headers to generate the API docs with doxygen
6270 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
6271 generated) and in ssl_parse_client_hello (max. client
6272 version was not properly set), thanks to Didier Rebeix
6273 * Fixed another bug in ssl_parse_client_hello: clients with
6274 cipherlists larger than 96 bytes were incorrectly rejected
6275 * Fixed a couple memory leak in x509_read.c
6276
6277= Version 0.3 released on 2007-01-01
6278
6279 * Added server-side SSLv3 and TLSv1.0 support
6280 * Multiple fixes to enhance the compatibility with g++,
6281 thanks to Xosé Antón Otero Ferreira
6282 * Fixed a bug in the CBC code, thanks to dowst; also,
Paul Bakker60b1d102013-10-29 10:02:51 +01006283 the bignum code is no longer dependent on long long
Paul Bakker99ed6782011-01-05 14:48:42 +00006284 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
6285 * Updated timing.c for improved compatibility with i386
6286 and 486 processors, thanks to Arnaud Cornet
6287
6288= Version 0.2 released on 2006-12-01
6289
6290 * Updated timing.c to support ARM and MIPS arch
6291 * Updated the MPI code to support 8086 on MSVC 1.5
6292 * Added the copyright notice at the top of havege.h
6293 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
6294 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
6295 * Fixed a bug reported by Torsten Lauter in ssl_read_record
6296 * Fixed a bug in rsa_check_privkey that would wrongly cause
6297 valid RSA keys to be dismissed (thanks to oldwolf)
6298 * Fixed a bug in mpi_is_prime that caused some primes to fail
6299 the Miller-Rabin primality test
6300
6301 I'd also like to thank Younès Hafri for the CRUX linux port,
6302 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
6303 who maintains the Debian package :-)
6304
6305= Version 0.1 released on 2006-11-01