Vulnerability Note VU#174086

Overview

tcpdump contains a vulnerability in the way it parses Internet Security Association and Key Management Protocol (ISAKMP) packets.

Description

tcpdump is a widely-used network sniffer that is capable of decoding ISAKMP packets. A vulnerability exists in the way the tcpdump rawprint() function (in print-isakmp.c) parses certain malformed ISAKMP packets containing an invalid "len" or "loc" value. For more information, please see RHSA-2004-007.

Impact

A remote attacker could cause a denial of service or possibly execute arbitrary code with privileges of the tcpdump process.

Solution

Upgrade or Apply Patch Upgrade or apply a patch as specified by your vendor.

Systems Affected (Learn More)

Vendor	Status	Date Notified	Date Updated
Debian	Affected	16 Jan 2004	21 Jan 2004
Guardian Digital Inc.	Affected	-	21 Jan 2004
OpenPKG	Affected	-	21 Jan 2004
Red Hat Inc.	Affected	16 Jan 2004	21 Jan 2004
SuSE Inc.	Affected	16 Jan 2004	21 Jan 2004
tcpdump.org	Affected	-	21 Jan 2004
Trusix	Affected	-	21 Jan 2004
TurboLinux	Affected	16 Jan 2004	22 Jan 2004
Hitachi	Not Affected	16 Jan 2004	22 Jan 2004
Openwall GNU/*/Linux	Not Affected	16 Jan 2004	21 Jan 2004
Apple Computer Inc.	Unknown	-	21 Jan 2004
Conectiva	Unknown	-	21 Jan 2004
Cray Inc.	Unknown	-	21 Jan 2004
EMC Corporation	Unknown	16 Jan 2004	21 Jan 2004
FreeBSD	Unknown	-	21 Jan 2004

If you are a vendor and your product is affected, let us know.View More »

CVSS Metrics (Learn More)

Group	Score	Vector
Base	N/A	N/A
Temporal	N/A	N/A
Environmental	N/A	N/A

References

• http://marc.theaimsgroup.com/?l=tcpdump-workers&m=107325073018070&w=2
• http://www.redhat.com/support/errata/RHSA-2004-007.html
• http://www.secunia.com/advisories/10636/
• http://www.ietf.org/rfc/rfc2408.txt
• http://www.tcpdump.org/
• http://xforce.iss.net/xforce/xfdb/14837
• http://www.securityfocus.com/bid/9423

Credit

This vulnerability was originally reported by Red Hat, Inc. Red Hat, in turn, credits Jonathan Heusser for discovering this vulnerability.

This document was written by Damon Morda.

Other Information

• CVE IDs: CAN-2004-0057
• Date Public: 14 Jan 2004
• Date First Published: 16 Jan 2004
• Date Last Updated: 22 Jan 2004
• Severity Metric: 2.95
• Document Revision: 11