Fix version-major intolerance again
This time doing minimal changes to avoid introducing other issues.
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 249b5a1..cd9802a 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -438,15 +438,20 @@
buf[1], buf[2] ) );
/*
- * SSLv3 Client Hello
+ * SSLv3/TLS Client Hello
*
* Record layer:
* 0 . 0 message type
* 1 . 2 protocol version
* 3 . 4 message length
*/
+
+ /* According to RFC 5246 Appendix E.1, the version here is typically
+ * "{03,00}, the lowest version number supported by the client, [or] the
+ * value of ClientHello.client_version", so the only meaningful check here
+ * is the major version shouldn't be less than 3 */
if( buf[0] != SSL_MSG_HANDSHAKE ||
- buf[1] != SSL_MAJOR_VERSION_3 )
+ buf[1] < SSL_MAJOR_VERSION_3 )
{
SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );
@@ -503,7 +508,7 @@
* Check the handshake type and protocol version
*/
if( buf[0] != SSL_HS_CLIENT_HELLO ||
- buf[4] != SSL_MAJOR_VERSION_3 )
+ buf[4] < SSL_MAJOR_VERSION_3 )
{
SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO );