Fix no-ssl3 configuration option

CVE-2014-3568

Reviewed-by: Emilia Kasper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
index d4e43c3568bb5e7a04bbaeff1f4a2b7ac22dc367..86ab3de1c1236ec0959df7e8eddfb988da2d1b24 100644 (file)
--- 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());
@@ -698,6 +700,7 @@ 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))
                        {
@@ -712,7 +715,9 @@ 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 567a6b10057756e81c36648e5359487b86df0178..93ca7d53cda4734bf9e98a4b6b5c079652625b33 100644 (file)
--- 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());
@@ -600,6 +602,12 @@ 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;
 
@@ -627,14 +635,6 @@ 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