Vulnerability Note VU#955526

tcpdump contains vulnerability in RADIUS decoding function print_attr_string() in print-radius.c

Overview

tcpdump contains a vulnerability in the way it parses Remote Authentication Dial In User Service (RADIUS) packets.

I. Description

tcpdump is a widely used network sniffer that is capable of decoding RADIUS packets. A vulnerability exists in the way the tcpdump print_attr_string() function (in print-radius.c) parses RADIUS attributes containing overly long length values. For more information, please see RHSA-2004-007.

II. Impact

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

III. Solution

Upgrade or Apply Patch

Upgrade or apply a patch as specified by your vendor.

Systems Affected

Vendor	Status	Date Notified
Apple Computer Inc.	Unknown	21-Jan-2004
Conectiva	Unknown	21-Jan-2004
Cray Inc.	Unknown	21-Jan-2004
Debian	Vulnerable	21-Jan-2004
EMC Corporation	Unknown	21-Jan-2004
FreeBSD	Unknown	21-Jan-2004
Fujitsu	Unknown	21-Jan-2004
Guardian Digital Inc.	Vulnerable	21-Jan-2004
Hewlett-Packard Company	Unknown	21-Jan-2004
Hitachi	Not Vulnerable	22-Jan-2004
IBM	Unknown	21-Jan-2004
Ingrian Networks	Unknown	21-Jan-2004
Juniper Networks	Unknown	21-Jan-2004
MandrakeSoft	Unknown	21-Jan-2004
MontaVista Software	Unknown	21-Jan-2004
NEC Corporation	Unknown	21-Jan-2004
NetBSD	Unknown	21-Jan-2004
Nokia	Unknown	21-Jan-2004
Novell	Unknown	21-Jan-2004
OpenBSD	Unknown	21-Jan-2004
OpenPKG	Vulnerable	21-Jan-2004
Openwall GNU/*/Linux	Not Vulnerable	21-Jan-2004
Red Hat Inc.	Vulnerable	21-Jan-2004
SCO	Unknown	21-Jan-2004
Sequent	Unknown	21-Jan-2004
SGI	Unknown	21-Jan-2004
Sun Microsystems Inc.	Unknown	21-Jan-2004
SuSE Inc.	Vulnerable	21-Jan-2004
tcpdump.org	Vulnerable	21-Jan-2004
Trusix	Vulnerable	21-Jan-2004
TurboLinux	Vulnerable	22-Jan-2004
Wind River Systems Inc.	Unknown	21-Jan-2004
Wirex	Unknown	21-Jan-2004

References

http://marc.theaimsgroup.com/?l=tcpdump-workers&m=107325073018070&w=2
http://rhn.redhat.com/errata/RHSA-2004-007.html
http://www.secunia.com/advisories/10636/
http://www.freeradius.org/rfc/attributes.html
http://www.tcpdump.org/
http://www.securityfocus.com/bid/7090
http://xforce.iss.net/xforce/xfdb/14836

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

Date Public:	2004-01-14
Date First Published:	2004-01-16
Date Last Updated:	2004-03-19
CERT Advisory:
CVE-ID(s):	CAN-2004-0055
NVD-ID(s):	CAN-2004-0055
US-CERT Technical Alerts:
Metric:	2.95
Document Revision:	17

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Get Adobe Reader