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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
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