X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_pkt.c;h=25cf929a55d6decf3d815f28ab5e3ffd8d089b11;hp=d422abfda0e61daaf87d92a1f820a207e3bbb6f3;hb=66299660976540fa59450a5edc700e61ce4685d0;hpb=1895583835239bc44c3f6584e48f0279ad884f3b

diff --git a/ssl/s3_pkt.c b/ssl/s3_pkt.c
index d422abfda0..25cf929a55 100644
--- a/ssl/s3_pkt.c
+++ b/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;
             }
@@ -1258,7 +1269,7 @@ int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
             cb(s, SSL_CB_READ_ALERT, j);
         }
 
-        if (alert_level == 1) { /* warning */
+        if (alert_level == SSL3_AL_WARNING) {
             s->s3->warn_alert = alert_descr;
             if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
                 s->shutdown |= SSL_RECEIVED_SHUTDOWN;
@@ -1281,7 +1292,7 @@ int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek)
             else if (alert_descr == SSL_AD_MISSING_SRP_USERNAME)
                 return (0);
 #endif
-        } else if (alert_level == 2) { /* fatal */
+        } else if (alert_level == SSL3_AL_FATAL) {
             char tmp[16];
 
             s->rwstate = SSL_NOTHING;