Removed Beta Changelog
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/ChangeLog b/ChangeLog
index 912a178..1c48958 100644
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+++ b/ChangeLog
@@ -1,330 +1,5 @@
Mbed TLS ChangeLog (Sorted per branch, date)
-= Mbed TLS 4.0.0-beta branch released 2025-07-04
-
-API changes
- * The experimental functions psa_generate_key_ext() and
- psa_key_derivation_output_key_ext() have been replaced by
- psa_generate_key_custom() and psa_key_derivation_output_key_custom().
- They have almost exactly the same interface, but the variable-length
- data is passed in a separate parameter instead of a flexible array
- member. This resolves a build failure under C++ compilers that do not
- support flexible array members (a C99 feature not adopted by C++).
- Fixes #9020.
- * Align the mbedtls_ssl_ticket_setup() function with the PSA Crypto API.
- Instead of taking a mbedtls_cipher_type_t as an argument, this function
- now takes 3 new arguments: a PSA algorithm, key type and key size, to
- specify the AEAD for ticket protection.
- * The PSA and Mbed TLS error spaces are now unified. mbedtls_xxx()
- functions can now return PSA_ERROR_xxx values.
- There is no longer a distinction between "low-level" and "high-level"
- Mbed TLS error codes.
- This will not affect most applications since the error values are
- between -32767 and -1 as before.
- * All API functions now use the PSA random generator psa_generate_random()
- internally. As a consequence, functions no longer take RNG parameters.
- Please refer to the migration guide at :
- tf-psa-crypto/docs/4.0-migration-guide.md.
-
-Default behavior changes
- * In a PSA-client-only build (i.e. MBEDTLS_PSA_CRYPTO_CLIENT &&
- !MBEDTLS_PSA_CRYPTO_C), do not automatically enable local crypto when the
- corresponding PSA mechanism is enabled, since the server provides the
- crypto. Fixes #9126.
- * The PK, X.509, PKCS7 and TLS modules now always use the PSA subsystem
- to perform cryptographic operations, with a few exceptions documented
- in docs/architecture/psa-migration/psa-limitations.md. This
- corresponds to the behavior of Mbed TLS 3.x when
- MBEDTLS_USE_PSA_CRYPTO is enabled. In effect, MBEDTLS_USE_PSA_CRYPTO
- is now always enabled.
- * psa_crypto_init() must be called before performing any cryptographic
- operation, including indirect requests such as parsing a key or
- certificate or starting a TLS handshake.
- * The `PSA_WANT_XXX` symbols as defined in
- tf-psa-crypto/include/psa/crypto_config.h are now always used in the
- configuration of the cryptographic mechanisms exposed by the PSA API.
- This corresponds to the configuration behavior of Mbed TLS 3.x when
- MBEDTLS_PSA_CRYPTO_CONFIG is enabled. In effect, MBEDTLS_PSA_CRYPTO_CONFIG
- is now always enabled and the configuration option has been removed.
- * In TLS clients, if mbedtls_ssl_set_hostname() has not been called,
- mbedtls_ssl_handshake() now fails with
- MBEDTLS_ERR_SSL_CERTIFICATE_VERIFICATION_WITHOUT_HOSTNAME
- if certificate-based authentication of the server is attempted.
- This is because authenticating a server without knowing what name
- to expect is usually insecure.
-
-Removals
- * Drop support for VIA Padlock. Removes MBEDTLS_PADLOCK_C.
- Fixes #5903.
- * Drop support for crypto alt interface. Removes MBEDTLS_XXX_ALT options
- at the module and function level for crypto mechanisms only. The remaining
- alt interfaces for platform, threading and timing are unchanged.
- Fixes #8149.
- * Remove support for the RSA-PSK key exchange in TLS 1.2.
- * Remove deprecated mbedtls_x509write_crt_set_serial(). The function was
- already deprecated and superseded by
- mbedtls_x509write_crt_set_serial_raw().
- * Remove the function mbedtls_ssl_conf_curves() which had been deprecated
- in favour of mbedtls_ssl_conf_groups() since Mbed TLS 3.1.
- * Remove support for the DHE-PSK key exchange in TLS 1.2.
- * Remove support for the DHE-RSA key exchange in TLS 1.2.
- * Following the removal of DHM module (#9972 and TF-PSA-Crypto#175) the
- following SSL functions are removed:
- - mbedtls_ssl_conf_dh_param_bin
- - mbedtls_ssl_conf_dh_param_ctx
- - mbedtls_ssl_conf_dhm_min_bitlen
- * Remove support for the RSA key exchange in TLS 1.2.
- * Remove mbedtls_low_level_strerr() and mbedtls_high_level_strerr(),
- since these concepts no longer exists. There is just mbedtls_strerror().
- * Sample programs for the legacy crypto API have been removed.
- pkey/rsa_genkey.c
- pkey/pk_decrypt.c
- pkey/dh_genprime.c
- pkey/rsa_verify.c
- pkey/mpi_demo.c
- pkey/rsa_decrypt.c
- pkey/key_app.c
- pkey/dh_server.c
- pkey/ecdh_curve25519.c
- pkey/pk_encrypt.c
- pkey/rsa_sign.c
- pkey/key_app_writer.c
- pkey/dh_client.c
- pkey/ecdsa.c
- pkey/rsa_encrypt.c
- wince_main.c
- aes/crypt_and_hash.c
- random/gen_random_ctr_drbg.c
- random/gen_entropy.c
- hash/md_hmac_demo.c
- hash/hello.c
- hash/generic_sum.c
- cipher/cipher_aead_demo.c
- * Remove compat-2-x.h header from mbedtls.
- * The library no longer offers interfaces to look up values by OID
- or OID by enum values.
- The header <mbedtls/oid.h> now only defines functions to convert
- between binary and dotted string OID representations, and macros
- for OID strings that are relevant to X.509.
- The compilation option MBEDTLS_OID_C no longer
- exists. OID tables are included in the build automatically as needed.
-
-Features
- * When the new compilation option MBEDTLS_PSA_KEY_STORE_DYNAMIC is enabled,
- the number of volatile PSA keys is virtually unlimited, at the expense
- of increased code size. This option is off by default, but enabled in
- the default mbedtls_config.h. Fixes #9216.
- * Add a new psa_key_agreement() PSA API to perform key agreement and return
- an identifier for the newly created key.
- * Added new configuration option MBEDTLS_PSA_STATIC_KEY_SLOTS, which
- uses static storage for keys, enabling malloc-less use of key slots.
- The size of each buffer is given by the option
- MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE. By default it accommodates the
- largest PSA key enabled in the build.
- * Add an interruptible version of key agreement to the PSA interface.
- See psa_key_agreement_iop_setup() and related functions.
- * Add an interruptible version of generate key to the PSA interface.
- See psa_generate_key_iop_setup() and related functions.
- * Add the function mbedtls_ssl_export_keying_material() which allows the
- client and server to extract additional shared symmetric keys from an SSL
- session, according to the TLS-Exporter specification in RFC 8446 and 5705.
- This requires MBEDTLS_SSL_KEYING_MATERIAL_EXPORT to be defined in
- mbedtls_config.h.
-
-Security
- * Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does
- not cause the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when
- MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and MBEDTLS_CTR_DRBG_C are disabled.
- CVE-2024-45157
- * Fix a stack buffer overflow in mbedtls_ecdsa_der_to_raw() and
- mbedtls_ecdsa_raw_to_der() when the bits parameter is larger than the
- largest supported curve. In some configurations with PSA disabled,
- all values of bits are affected. This never happens in internal library
- calls, but can affect applications that call these functions directly.
- CVE-2024-45158
- * With TLS 1.3, when a server enables optional authentication of the
- client, if the client-provided certificate does not have appropriate values
- in keyUsage or extKeyUsage extensions, then the return value of
- mbedtls_ssl_get_verify_result() would incorrectly have the
- MBEDTLS_X509_BADCERT_KEY_USAGE and MBEDTLS_X509_BADCERT_EXT_KEY_USAGE bits
- clear. As a result, an attacker that had a certificate valid for uses other
- than TLS client authentication could be able to use it for TLS client
- authentication anyway. Only TLS 1.3 servers were affected, and only with
- optional authentication (required would abort the handshake with a fatal
- alert).
- CVE-2024-45159
- * Fix a buffer underrun in mbedtls_pk_write_key_der() when
- called on an opaque key, MBEDTLS_USE_PSA_CRYPTO is enabled,
- and the output buffer is smaller than the actual output.
- Fix a related buffer underrun in mbedtls_pk_write_key_pem()
- when called on an opaque RSA key, MBEDTLS_USE_PSA_CRYPTO is enabled
- and MBEDTLS_MPI_MAX_SIZE is smaller than needed for a 4096-bit RSA key.
- CVE-2024-49195
- * Note that TLS clients should generally call mbedtls_ssl_set_hostname()
- if they use certificate authentication (i.e. not pre-shared keys).
- Otherwise, in many scenarios, the server could be impersonated.
- The library will now prevent the handshake and return
- MBEDTLS_ERR_SSL_CERTIFICATE_VERIFICATION_WITHOUT_HOSTNAME
- if mbedtls_ssl_set_hostname() has not been called.
- Reported by Daniel Stenberg.
- CVE-2025-27809
- * Fix a vulnerability in the TLS 1.2 handshake. If memory allocation failed
- or there was a cryptographic hardware failure when calculating the
- Finished message, it could be calculated incorrectly. This would break
- the security guarantees of the TLS handshake.
- CVE-2025-27810
- * Fix possible use-after-free or double-free in code calling
- mbedtls_x509_string_to_names(). This was caused by the function calling
- mbedtls_asn1_free_named_data_list() on its head argument, while the
- documentation did no suggest it did, making it likely for callers relying
- on the documented behaviour to still hold pointers to memory blocks after
- they were free()d, resulting in high risk of use-after-free or double-free,
- with consequences ranging up to arbitrary code execution.
- In particular, the two sample programs x509/cert_write and x509/cert_req
- were affected (use-after-free if the san string contains more than one DN).
- Code that does not call mbedtls_string_to_names() directly is not affected.
- Found by Linh Le and Ngan Nguyen from Calif.
- CVE-2025-47917
- * Fix a bug in mbedtls_x509_string_to_names() and the
- mbedtls_x509write_{crt,csr}_set_{subject,issuer}_name() functions,
- where some inputs would cause an inconsistent state to be reached, causing
- a NULL dereference either in the function itself, or in subsequent
- users of the output structure, such as mbedtls_x509_write_names(). This
- only affects applications that create (as opposed to consume) X.509
- certificates, CSRs or CRLs. Found by Linh Le and Ngan Nguyen from Calif.
- CVE-2025-48965
-
-Bugfix
- * Fix TLS 1.3 client build and runtime when support for session tickets is
- disabled (MBEDTLS_SSL_SESSION_TICKETS configuration option). Fixes #6395.
- * Fix compilation error when memcpy() is a function-like macros. Fixes #8994.
- * MBEDTLS_ASN1_PARSE_C and MBEDTLS_ASN1_WRITE_C are now automatically enabled
- as soon as MBEDTLS_RSA_C is enabled. Fixes #9041.
- * Fix undefined behaviour (incrementing a NULL pointer by zero length) when
- passing in zero length additional data to multipart AEAD.
- * Fix rare concurrent access bug where attempting to operate on a
- non-existent key while concurrently creating a new key could potentially
- corrupt the key store.
- * Fix error handling when creating a key in a dynamic secure element
- (feature enabled by MBEDTLS_PSA_CRYPTO_SE_C). In a low memory condition,
- the creation could return PSA_SUCCESS but using or destroying the key
- would not work. Fixes #8537.
- * Fix issue of redefinition warning messages for _GNU_SOURCE in
- entropy_poll.c and sha_256.c. There was a build warning during
- building for linux platform.
- Resolves #9026
- * Fix a compilation warning in pk.c when PSA is enabled and RSA is disabled.
- * Fix the build when MBEDTLS_PSA_CRYPTO_CONFIG is enabled and the built-in
- CMAC is enabled, but no built-in unauthenticated cipher is enabled.
- Fixes #9209.
- * Fix redefinition warnings when SECP192R1 and/or SECP192K1 are disabled.
- Fixes #9029.
- * Fix psa_cipher_decrypt() with CCM* rejecting messages less than 3 bytes
- long. Credit to Cryptofuzz. Fixes #9314.
- * Fix interference between PSA volatile keys and built-in keys
- when MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS is enabled and
- MBEDTLS_PSA_KEY_SLOT_COUNT is more than 4096.
- * Document and enforce the limitation of mbedtls_psa_register_se_key()
- to persistent keys. Resolves #9253.
- * Fix Clang compilation error when MBEDTLS_USE_PSA_CRYPTO is enabled
- but MBEDTLS_DHM_C is disabled. Reported by Michael Schuster in #9188.
- * Fix server mode only build when MBEDTLS_SSL_SRV_C is enabled but
- MBEDTLS_SSL_CLI_C is disabled. Reported by M-Bab on GitHub in #9186.
- * When MBEDTLS_PSA_CRYPTO_C was disabled and MBEDTLS_ECDSA_C enabled,
- some code was defining 0-size arrays, resulting in compilation errors.
- Fixed by disabling the offending code in configurations without PSA
- Crypto, where it never worked. Fixes #9311.
- * Fixes an issue where some TLS 1.2 clients could not connect to an
- Mbed TLS 3.6.0 server, due to incorrect handling of
- legacy_compression_methods in the ClientHello.
- fixes #8995, #9243.
- * Fix a memory leak that could occur when failing to process an RSA
- key through some PSA functions due to low memory conditions.
- * Fixed a regression introduced in 3.6.0 where the CA callback set with
- mbedtls_ssl_conf_ca_cb() would stop working when connections were
- upgraded to TLS 1.3. Fixed by adding support for the CA callback with TLS
- 1.3.
- * Fixed a regression introduced in 3.6.0 where clients that relied on
- optional/none authentication mode, by calling mbedtls_ssl_conf_authmode()
- with MBEDTLS_SSL_VERIFY_OPTIONAL or MBEDTLS_SSL_VERIFY_NONE, would stop
- working when connections were upgraded to TLS 1.3. Fixed by adding
- support for optional/none with TLS 1.3 as well. Note that the TLS 1.3
- standard makes server authentication mandatory; users are advised not to
- use authmode none, and to carefully check the results when using optional
- mode.
- * Fixed a regression introduced in 3.6.0 where context-specific certificate
- verify callbacks, set with mbedtls_ssl_set_verify() as opposed to
- mbedtls_ssl_conf_verify(), would stop working when connections were
- upgraded to TLS 1.3. Fixed by adding support for context-specific verify
- callback in TLS 1.3.
- * Fix unintended performance regression when using short RSA public keys.
- Fixes #9232.
- * When MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE is disabled, work with
- peers that have middlebox compatibility enabled, as long as no
- problematic middlebox is in the way. Fixes #9551.
- * Fix invalid JSON schemas for driver descriptions used by
- generate_driver_wrappers.py.
- * Use 'mbedtls_net_close' instead of 'close' in 'mbedtls_net_bind'
- and 'mbedtls_net_connect' to prevent possible double close fd
- problems. Fixes #9711.
- * Fix undefined behavior in some cases when mbedtls_psa_raw_to_der() or
- mbedtls_psa_der_to_raw() is called with bits=0.
- * Fix compilation on MS-DOS DJGPP. Fixes #9813.
- * Fix missing constraints on the AES-NI inline assembly which is used on
- GCC-like compilers when building AES for generic x86_64 targets. This
- may have resulted in incorrect code with some compilers, depending on
- optimizations. Fixes #9819.
- * Support re-assembly of fragmented handshake messages in TLS (both
- 1.2 and 1.3). The lack of support was causing handshake failures with
- some servers, especially with TLS 1.3 in practice. There are a few
- limitations, notably a fragmented ClientHello is only supported when
- TLS 1.3 support is enabled. See the documentation of
- mbedtls_ssl_handshake() for details.
- * Fix definition of MBEDTLS_PRINTF_SIZET to prevent runtime crashes that
- occurred whenever SSL debugging was enabled on a copy of Mbed TLS built
- with Visual Studio 2013 or MinGW.
- Fixes #10017.
- * Silence spurious -Wunterminated-string-initialization warnings introduced
- by GCC 15. Fixes #9944.
-
-Changes
- * Warn if mbedtls/check_config.h is included manually, as this can
- lead to spurious errors. Error if a *adjust*.h header is included
- manually, as this can lead to silently inconsistent configurations,
- potentially resulting in buffer overflows.
- When migrating from Mbed TLS 2.x, if you had a custom config.h that
- included check_config.h, remove this inclusion from the Mbed TLS 3.x
- configuration file (renamed to mbedtls_config.h). This change was made
- in Mbed TLS 3.0, but was not announced in a changelog entry at the time.
- * Functions regarding numeric string conversions for OIDs have been moved
- from the OID module and now reside in X.509 module. This helps to reduce
- the code size as these functions are not commonly used outside of X.509.
- * Improve performance of PSA key generation with ECC keys: it no longer
- computes the public key (which was immediately discarded). Fixes #9732.
- * Cryptography and platform configuration options have been migrated
- from the Mbed TLS library configuration file mbedtls_config.h to
- crypto_config.h that will become the TF-PSA-Crypto configuration file,
- see config-split.md for more information. The reference and test custom
- configuration files respectively in configs/ and tests/configs/ have
- been updated accordingly.
- To migrate custom Mbed TLS configurations where
- MBEDTLS_PSA_CRYPTO_CONFIG is disabled, you should first adapt them
- to the PSA configuration scheme based on PSA_WANT_XXX symbols
- (see psa-conditional-inclusion-c.md for more information).
- To migrate custom Mbed TLS configurations where
- MBEDTLS_PSA_CRYPTO_CONFIG is enabled, you should migrate the
- cryptographic and platform configuration options from mbedtls_config.h
- to crypto_config.h (see config-split.md for more information and configs/
- for examples).
- * Move the crypto part of the library (content of tf-psa-crypto directory)
- from the Mbed TLS to the TF-PSA-Crypto repository. The crypto code and
- tests development will now occur in TF-PSA-Crypto, which Mbed TLS
- references as a Git submodule.
- * The function mbedtls_x509_string_to_names() now requires its head argument
- to point to NULL on entry. This makes it likely that existing risky uses of
- this function (see the entry in the Security section) will be detected and
- fixed.
-
= Mbed TLS 3.6.0 branch released 2024-03-28
API changes