MFC: r284283

Merge OpenSSL 1.0.1n.

1 files changed, 12 insertions, 1 deletions

diff --git a/crypto/openssl/ssl/s3_pkt.c b/crypto/openssl/ssl/s3_pkt.c
index 7c9f20c..25cf929 100644
--- a/crypto/openssl/ssl/s3_pkt.c
+++ b/crypto/openssl/ssl/s3_pkt.c
@@ -347,11 +347,22 @@ static int ssl3_get_record(SSL *s)
             if (version != s->version) {
                 SSLerr(SSL_F_SSL3_GET_RECORD, SSL_R_WRONG_VERSION_NUMBER);
                 if ((s->version & 0xFF00) == (version & 0xFF00)
-                    && !s->enc_write_ctx && !s->write_hash)
+                    && !s->enc_write_ctx && !s->write_hash) {
+                    if (rr->type == SSL3_RT_ALERT) {
+                        /*
+                         * The record is using an incorrect version number, but
+                         * what we've got appears to be an alert. We haven't
+                         * read the body yet to check whether its a fatal or
+                         * not - but chances are it is. We probably shouldn't
+                         * send a fatal alert back. We'll just end.
+                         */
+                         goto err;
+                    }
                     /*
                      * Send back error using their minor version number :-)
                      */
                     s->version = (unsigned short)version;
+                }
                 al = SSL_AD_PROTOCOL_VERSION;
                 goto f_err;
             }