Don't alow TLS v1.0 ciphersuites for SSLv3

This disables some ciphersuites which aren't supported in SSL v3:
specifically PSK ciphersuites which use SHA256 or SHA384 for the MAC.

Thanks to the Open Crypto Audit Project for identifying this issue.

Reviewed-by: Matt Caswell <matt@openssl.org>

ssl/s3_lib.c

diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 13bf318..95cc56a 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -4841,6 +4841,9 @@
         /* Skip TLS v1.2 only ciphersuites if not supported */
         if ((c->algorithm_ssl & SSL_TLSV1_2) && !SSL_USE_TLS1_2_CIPHERS(s))
             continue;
+        /* Skip TLS v1.0 ciphersuites if SSLv3 */
+        if ((c->algorithm_ssl & SSL_TLSV1) && s->version == SSL3_VERSION)
+            continue;
 
         ssl_set_masks(s, c);
         mask_k = s->s3->tmp.mask_k;