From 82180dcc0a3c25bc806a3ba73e49deb00f5c1339 Mon Sep 17 00:00:00 2001 From: Geoff Thorpe Date: Wed, 15 Oct 2014 03:25:50 -0400 Subject: [PATCH] Fix no-ssl3 configuration option CVE-2014-3568 Reviewed-by: Emilia Kasper Reviewed-by: Rich Salz --- ssl/s23_clnt.c | 9 +++++++-- ssl/s23_srvr.c | 18 +++++++++--------- 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c index ca6dcd343c..56705c3010 100644 --- a/ssl/s23_clnt.c +++ b/ssl/s23_clnt.c @@ -125,9 +125,11 @@ static const SSL_METHOD *ssl23_get_client_method(int ver) if (ver == SSL2_VERSION) return(SSLv2_client_method()); #endif +#ifndef OPENSSL_NO_SSL3 if (ver == SSL3_VERSION) return(SSLv3_client_method()); - else if (ver == TLS1_VERSION) +#endif + if (ver == TLS1_VERSION) return(TLSv1_client_method()); else if (ver == TLS1_1_VERSION) return(TLSv1_1_client_method()); @@ -710,6 +712,7 @@ static int ssl23_get_server_hello(SSL *s) { /* we have sslv3 or tls1 (server hello or alert) */ +#ifndef OPENSSL_NO_SSL3 if ((p[2] == SSL3_VERSION_MINOR) && !(s->options & SSL_OP_NO_SSLv3)) { @@ -724,7 +727,9 @@ static int ssl23_get_server_hello(SSL *s) s->version=SSL3_VERSION; s->method=SSLv3_client_method(); } - else if ((p[2] == TLS1_VERSION_MINOR) && + else +#endif + if ((p[2] == TLS1_VERSION_MINOR) && !(s->options & SSL_OP_NO_TLSv1)) { s->version=TLS1_VERSION; diff --git a/ssl/s23_srvr.c b/ssl/s23_srvr.c index 6e0746691c..6b7b2e94ac 100644 --- a/ssl/s23_srvr.c +++ b/ssl/s23_srvr.c @@ -127,9 +127,11 @@ static const SSL_METHOD *ssl23_get_server_method(int ver) if (ver == SSL2_VERSION) return(SSLv2_server_method()); #endif +#ifndef OPENSSL_NO_SSL3 if (ver == SSL3_VERSION) return(SSLv3_server_method()); - else if (ver == TLS1_VERSION) +#endif + if (ver == TLS1_VERSION) return(TLSv1_server_method()); else if (ver == TLS1_1_VERSION) return(TLSv1_1_server_method()); @@ -607,6 +609,12 @@ 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) + { + SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL); + goto err; + } if (!ssl_init_wbio_buffer(s,1)) goto err; @@ -634,14 +642,6 @@ int ssl23_get_client_hello(SSL *s) s->s3->rbuf.left=0; s->s3->rbuf.offset=0; } - if (s->version == TLS1_2_VERSION) - s->method = TLSv1_2_server_method(); - else if (s->version == TLS1_1_VERSION) - s->method = TLSv1_1_server_method(); - else if (s->version == TLS1_VERSION) - s->method = TLSv1_server_method(); - else - s->method = SSLv3_server_method(); #if 0 /* ssl3_get_client_hello does this */ s->client_version=(v[0]<<8)|v[1]; #endif -- 2.25.1