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Gentoo Linux Security Advisory GLSA 200501-46
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http://security.gentoo.org/
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Severity: Normal
Title: ClamAV: Multiple issues
Date: January 31, 2005
Bugs: #78656, #79194
ID: 200501-46

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Synopsis
========

ClamAV contains two vulnerabilities that could lead to Denial of
Service and evasion of virus scanning.

Background
==========

ClamAV is an antivirus toolkit. It includes a multi-threaded daemon and
a command line scanner.

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

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Package / Vulnerable / Unaffected
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1 app-antivirus/clamav <= 0.80 >= 0.81

Description
===========

ClamAV fails to properly scan ZIP files with special headers
(CAN-2005-0133) and base64 encoded images in URLs.

Impact
======

By sending a base64 encoded image file in a URL an attacker could evade
virus scanning. By sending a specially-crafted ZIP file an attacker
could cause a Denial of Service by crashing the clamd daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ClamAV users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.81"

References
==========

[ 1 ] CAN-2005-0133
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0133
[ 2 ] ClamAV Release Announcement
http://sourceforge.net/forum/forum.php?forum_id=440649
[ 3 ] Secunia SA13900
http://secunia.com/advisories/13900/

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

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

http://security.gentoo.org/glsa/glsa-200501-46.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 (at) gentoo (dot) org [email concealed] 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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