diff options
| author | Guy Harris <guy@alum.mit.edu> | 2003-12-10 10:47:24 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2003-12-10 10:47:24 +0000 |
| commit | 2a8afde2fd90445229730a6a53193f9accd8d10f (patch) | |
| tree | abc1f990f40dc3104c5beb1414582ff562da18e0 /packet-isakmp.c | |
| parent | e42f094023a148770a191c242d90e8b47896d259 (diff) | |
Check whether the packet length is less than the length of the packet
header, and give up if it is.
svn path=/trunk/; revision=9227
Diffstat (limited to 'packet-isakmp.c')
| -rw-r--r-- | packet-isakmp.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/packet-isakmp.c b/packet-isakmp.c index d9b216c766..86172b17b2 100644 --- a/packet-isakmp.c +++ b/packet-isakmp.c @@ -4,7 +4,7 @@ * for ISAKMP (RFC 2407) * Brad Robel-Forrest <brad.robel-forrest@watchguard.com> * - * $Id: packet-isakmp.c,v 1.74 2003/12/02 18:35:36 guy Exp $ + * $Id: packet-isakmp.c,v 1.75 2003/12/10 10:47:24 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@ethereal.com> @@ -520,6 +520,13 @@ dissect_isakmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) "Message ID: 0x%s", tvb_bytes_to_str(tvb, offset, sizeof(hdr.message_id))); offset += sizeof(hdr.message_id); + if (hdr.length < sizeof(hdr)) { + proto_tree_add_text(isakmp_tree, tvb, offset, sizeof(hdr.length), + "Length: (bogus, length is %u, should be at least %u)", + hdr.length, sizeof(hdr)); + return; + } + proto_tree_add_text(isakmp_tree, tvb, offset, sizeof(hdr.length), "Length: %u", hdr.length); offset += sizeof(hdr.length); |