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Explicitly set invalid value for the end of the signiture algorithm set

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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
This commit is contained in:
Gabor Mezei 2022-05-09 16:43:21 +02:00
parent 15b95a6c52
commit 1226590c88
No known key found for this signature in database
GPG key ID: 08AB7BB35012F877
1 changed files with 4 additions and 3 deletions
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7
library/ssl_tls12_server.c
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@ -1632,13 +1632,14 @@ read_record_header:
uint16_t *set = ssl->handshake->received_sig_algs;
const uint16_t sig_algs[] = {
MBEDTLS_SSL_SIG_ALG_SET( MBEDTLS_SSL_HASH_SHA1 )
MBEDTLS_TLS_SIG_NONE
};
const uint16_t invalid_sig_alg = MBEDTLS_TLS_SIG_NONE;
size_t count = sizeof( sig_algs ) / sizeof( sig_algs[0] );
if( count <= MBEDTLS_RECEIVED_SIG_ALGS_SIZE )
if( count < MBEDTLS_RECEIVED_SIG_ALGS_SIZE )
{
memcpy( set, sig_algs, sizeof( sig_algs ) );
memcpy( &set[count], &invalid_sig_alg, sizeof( sig_algs[0] ) );
}
else
{
@ -1647,7 +1648,7 @@ read_record_header:
memcpy( set, sig_algs, size );
memcpy( &set[MBEDTLS_RECEIVED_SIG_ALGS_SIZE - 1],
&sig_algs[count - 1], sizeof( sig_algs[0] ) );
&invalid_sig_alg, sizeof( sig_algs[0] ) );
}
}