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Follow on from CVE-2014-3571. This fixes the code that was the original source

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of the crash due to p being NULL. Steve's fix prevents this situation from
occuring - however this is by no means obvious by looking at the code for
dtls1_get_record. This fix just makes things look a bit more sane.

Conflicts:
	ssl/d1_pkt.c

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
This commit is contained in:
Matt Caswell 2015-01-03 00:54:35 +00:00
parent 46bf0ba876
commit 50befdb659
1 changed files with 2 additions and 1 deletions
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3
ssl/d1_pkt.c
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@ -624,7 +624,8 @@ again:
* would be dropped unnecessarily.
*/
if (!(s->d1->listen && rr->type == SSL3_RT_HANDSHAKE &&
*p == SSL3_MT_CLIENT_HELLO) &&
s->packet_length > DTLS1_RT_HEADER_LENGTH &&
s->packet[DTLS1_RT_HEADER_LENGTH] == SSL3_MT_CLIENT_HELLO) &&
! dtls1_record_replay_check(s, bitmap, &(rr->seq_num)))
{
rr->length = 0;