[ GLSA 200505-06 ] TCPDump: Decoding routines Denial of Service vulnerability
From: Sune Kloppenborg Jeppesen <jaervosz@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200505-06 ] TCPDump: Decoding routines Denial of Service vulnerability
Date: Mon, 9 May 2005 21:31:51 +0200
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Organization: Gentoo Linux Security Team
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Gentoo Linux Security Advisory GLSA 200505-06
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http://security.gentoo.org/
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Severity: Normal
Title: TCPDump: Decoding routines Denial of Service vulnerability
Date: May 09, 2005
Bugs: #90541
ID: 200505-06
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Synopsis
========
A flaw in the decoding of network packets renders TCPDump vulnerable to
a remote Denial of Service attack.
Background
==========
TCPDump is a tool for network monitoring and data acquisition.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/tcpdump < 3.8.3-r2 >= 3.8.3-r2
Description
===========
TCPDump improperly handles and decodes ISIS, BGP, LDP (CAN-2005-1279)
and RSVP (CAN-2005-1280) packets. TCPDump might loop endlessly after
receiving malformed packets.
Impact
======
A malicious remote attacker can exploit the decoding issues for a
Denial of Service attack by sending specially crafted packets, possibly
causing TCPDump to loop endlessly.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All TCPDump users should upgrade to the latest available version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.8.3-r2"
References
==========
[ 1 ] CAN-2005-1279
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1279
[ 2 ] CAN-2005-1280
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1280
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200505-06.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
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