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Initialize hash_len before using it

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-12-13 14:38:40 +01:00
parent d61551c017
commit 622d80453b
1 changed files with 8 additions and 8 deletions
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16
library/ssl_tls.c
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@ -3631,6 +3631,14 @@ int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse finished" ) );
/* There is currently no ciphersuite using another length with TLS 1.2 */
#if defined(MBEDTLS_SSL_PROTO_SSL3)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
hash_len = 36;
else
#endif
hash_len = 12;
ssl->handshake->calc_finished( ssl, buf, ssl->conf->endpoint ^ 1 );
if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 )
@ -3648,14 +3656,6 @@ int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl )
goto exit;
}
/* There is currently no ciphersuite using another length with TLS 1.2 */
#if defined(MBEDTLS_SSL_PROTO_SSL3)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
hash_len = 36;
else
#endif
hash_len = 12;
if( ssl->in_msg[0] != MBEDTLS_SSL_HS_FINISHED ||
ssl->in_hslen != mbedtls_ssl_hs_hdr_len( ssl ) + hash_len )
{