A new security update has been released for Gentoo Linux - ClamAV: Multiple vulnerabilities. Here the announcement:
"Gentoo Linux Security Advisory GLSA 200805-19
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http://security.gentoo.org/
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Severity: High
Title: ClamAV: Multiple vulnerabilities
Date: May 20, 2008
Bugs: #213762
ID: 200805-19

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Synopsis
========

Multiple vulnerabilities in ClamAV may result in the remote execution
of arbitrary code.

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 < 0.93 >= 0.93

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

Multiple vulnerabilities have been reported:

* Damian Put reported a heap-based buffer overflow when processing
PeSpin packed PE binaries (CVE-2008-0314).

* Alin Rad Pop of Secunia Research reported a buffer overflow in the
cli_scanpe() function when processing Upack PE binaries
(CVE-2008-1100).

* Hanno Boeck reported an infinite loop when processing ARJ archives
(CVE-2008-1387).

* Damian Put and Thomas Pollet reported a heap-based buffer overflow
when processing WWPack compressed PE binaries (CVE-2008-1833).

* A buffer over-read was discovered in the rfc2231() function when
producing a string that is not NULL terminated (CVE-2008-1836).

* An unspecified vulnerability leading to "memory problems" when
scanning RAR files was reported (CVE-2008-1837).

* Thierry Zoller reported that scanning of RAR files could be
circumvented (CVE-2008-1835).

Impact
======

A remote attacker could entice a user or automated system to scan a
specially crafted file, possibly leading to the execution of arbitrary
code with the privileges of the user running ClamAV (either a system
user or the "clamav" user if clamd is compromised), or 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-0.93"

References
==========

[ 1 ] CVE-2008-0314
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0314
[ 2 ] CVE-2008-1100
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1100
[ 3 ] CVE-2008-1387
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1387
[ 4 ] CVE-2008-1833
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1833
[ 5 ] CVE-2008-1835
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1835
[ 6 ] CVE-2008-1836
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1836
[ 7 ] CVE-2008-1837
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1837

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

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

http://security.gentoo.org/glsa/glsa-200805-19.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
"


GLSA 200805-15 libid3tag: Denial of Service
GLSA 200805-17 Perl: Execution of arbitrary code