*) Fix for TLS record tampering bug. A carefully crafted invalid handshake could crash OpenSSL with a NULL pointer exception. Thanks to Anton Johansson for reporting this issues. (CVE-2013-4353) diff --git a/ssl/s3_both.c b/ssl/s3_both.c index 1e5dcab..53b9390 100644 (file) --- a/ssl/s3_both.c +++ b/ssl/s3_both.c @@ -210,7 +210,11 @@ static void ssl3_take_mac(SSL *s) { const char *sender; int slen; - + /* If no new cipher setup return immediately: other functions will + * set the appropriate error. + */ + if (s->s3->tmp.new_cipher == NULL) + return; if (s->state & SSL_ST_CONNECT) { sender=s->method->ssl3_enc->server_finished_label;