A new security update has been released for Gentoo Linux - ClamAV: Multiple Denials of Service. Here the announcement:

Gentoo Linux Security Advisory GLSA 200809-18
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http://security.gentoo.org/=

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Severity: Normal
Title: ClamAV: Multiple Denials of Service
Date: September 25, 2008
Bugs: #236665
ID: 200809-18

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Synopsis
========

Multiple vulnerabilities in ClamAV may result in a Denial of Service.

Background
==========

Clam AntiVirus is a free anti-virus toolkit for UNIX, designed
especially for e-mail scanning on mail gateways.

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

-------------------------------------------------------------------=

Package / Vulnerable / Unaffected
-------------------------------------------------------------------=

1 app-antivirus/clamav < 0.94 >= 0.9=
4

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

Hanno boeck reported an error in libclamav/chmunpack.c when processing
CHM files (CVE-2008-1389). Other unspecified vulnerabilites were also
reported, including a NULL pointer dereference in libclamav
(CVE-2008-3912), memory leaks in freshclam/manager.c (CVE-2008-3913),
and file descriptor leaks in libclamav/others.c and libclamav/sis.c
(CVE-2008-3914).

Impact
======

A remote attacker could entice a user or automated system to scan a
specially crafted CHM, possibly resulting in a Denial of Service
(daemon crash). The other attack vectors mentioned above could also
result in a Denial of Service.

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-0.94"

References
==========

[ 1 ] CVE-2008-1389
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1389
[ 2 ] CVE-2008-3912
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3912
[ 3 ] CVE-2008-3913
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3913
[ 4 ] CVE-2008-3914
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3914

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

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

http://security.gentoo.org/glsa/glsa-200809-18.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 2008 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