Cleanse the SSLv3 MAC secret when we clean up the read record layer
@@ -1198,7 +1198,6 @@ tls_new_record_layer(OSSL_LIB_CTX *libctx, const char *propq, int vers,
static void tls_int_free(OSSL_RECORD_LAYER *rl)
{
- /* TODO(RECLAYER): Cleanse sensitive fields */
BIO_free(rl->prev);
BIO_free(rl->bio);
BIO_free(rl->next);
@@ -1210,6 +1209,9 @@ static void tls_int_free(OSSL_RECORD_LAYER *rl)
COMP_CTX_free(rl->expand);
#endif
+ if (rl->version == SSL3_VERSION)
+ OPENSSL_cleanse(rl->mac_secret, sizeof(rl->mac_secret));
+
OPENSSL_free(rl);
}
