GLSA 200608-13 ClamAV: Heap buffer overflow
Posted on: 08/08/2006 03:32 PM

A new security update has been released for Gentoo Linux - ClamAV: Heap buffer overflow. Here the announcement:

Gentoo Linux Security Advisory GLSA 200608-13
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http://security.gentoo.org/
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Severity: High
Title: ClamAV: Heap buffer overflow
Date: August 08, 2006
Bugs: #143093
ID: 200608-13

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Synopsis
========

ClamAV is vulnerable to a heap-based buffer overflow resulting in a
Denial of Service and potentially remote execution of arbitrary code.

Background
==========

ClamAV is a GPL virus scanner.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-antivirus/clamav lt; 0.88.4 gt;= 0.88.4

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

Damian Put has discovered a boundary error in the pefromupx() function
used by the UPX extraction module, which unpacks PE Windows executable
files. Both the "clamscan" command-line utility and the "clamd" daemon
are affected.

Impact
======

By sending a malicious attachment to a mail server running ClamAV, a
remote attacker can cause a Denial of Service and potentially the
execution of arbitrary code with the permissions of the user running
ClamAV.

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 "gt;=app-antivirus/clamav-0.88.4"

References
==========

[ 1 ] ClamAV security advisory
http://www.clamav.net/security/0.88.4.html

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

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

http://security.gentoo.org/glsa/glsa-200608-13.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 2006 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/2.5



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