openssl/openssl-0.9.8g-cve-2008-1671.patch
Tomáš Mráz 2c01b19843 - fix CVE-2008-0891 - server name extension crash (#448492)
- fix CVE-2008-1672 - server key exchange message omit crash (#448495)
2008-05-28 15:52:21 +00:00

25 lines
1.0 KiB
Diff

*) Fix flaw if 'Server Key exchange message' is omitted from a TLS
Handshake which could lead to a cilent crash as found using the
Codenomicon TLS test suite (CVE-2008-1672) [Steve Henson, Mark Cox]
Index: ssl/s3_clnt.c
===================================================================
RCS file: /e/openssl/cvs/openssl/ssl/s3_clnt.c,v
retrieving revision 1.88.2.12
diff -u -r1.88.2.12 ssl/s3_clnt.c
--- ssl/s3_clnt.c 3 Nov 2007 13:07:39 -0000
+++ ssl/s3_clnt.c 22 May 2008 09:19:30 -0000
@@ -2061,6 +2061,13 @@
{
DH *dh_srvr,*dh_clnt;
+ if (s->session->sess_cert == NULL)
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
+ goto err;
+ }
+
if (s->session->sess_cert->peer_dh_tmp != NULL)
dh_srvr=s->session->sess_cert->peer_dh_tmp;
else