A Clam AntiVirus security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200506-23
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http://security.gentoo.org/
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Severity: Normal
Title: Clam AntiVirus: Denial of Service vulnerability
Date: June 27, 2005
Bugs: #96960
ID: 200506-23

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Synopsis
=======

Clam AntiVirus is vulnerable to a Denial of Service attack when processing certain Quantum archives.



Background
=========

Clam AntiVirus is a GPL anti-virus toolkit, designed for integration with mail servers to perform attachment scanning. Clam AntiVirus also provides a command line scanner and a tool for fetching updates of the virus database.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 app-antivirus/clamav < 0.86.1 >= 0.86.1

Description
==========

Andrew Toller and Stefan Kanthak discovered that a flaw in libmspack's Quantum archive decompressor renders Clam AntiVirus vulnerable to a Denial of Service attack.

Impact
=====

A remote attacker could exploit this vulnerability to cause a Denial of Service by sending a specially crafted Quantum archive to the server.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All Clam AntiVirus users should upgrade to the latest available
version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.86.1"

References
=========

[ 1 ] Clam AntiVirus Release Notes
http://sourceforge.net/project/shownotes.php?release_id=337279

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200506-23.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