From: Kurt Roeckx Date: Tue, 21 Oct 2014 18:45:15 +0000 (+0200) Subject: Keep old method in case of an unsupported protocol X-Git-Url: http://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=392fa7a952e97d82eac6958c81ed1e256e6b8ca5 Keep old method in case of an unsupported protocol When we're configured with no-ssl3 and we receive an SSL v3 Client Hello, we set the method to NULL. We didn't used to do that, and it breaks things. This is a regression introduced in 62f45cc27d07187b59551e4fad3db4e52ea73f2c. Keep the old method since the code is not able to deal with a NULL method at this time. CVE-2014-3569, PR#3571 Reviewed-by: Emilia Käsper --- diff --git a/ssl/s23_srvr.c b/ssl/s23_srvr.c index 38960ba..858420d 100644 --- a/ssl/s23_srvr.c +++ b/ssl/s23_srvr.c @@ -615,12 +615,14 @@ int ssl23_get_client_hello(SSL *s) if ((type == 2) || (type == 3)) { /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */ - s->method = ssl23_get_server_method(s->version); - if (s->method == NULL) + const SSL_METHOD *new_method; + new_method = ssl23_get_server_method(s->version); + if (new_method == NULL) { SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); goto err; } + s->method = new_method; if (!ssl_init_wbio_buffer(s,1)) goto err;