[ GLSA 200404-07 ] ClamAV RAR Archive Remote Denial Of Service Vulnerability (fwd)

[Raymond Dijkxhoorn]

FYI.

---------- Forwarded message ----------
Date: Wed, 7 Apr 2004 14:12:32 -0400
From: Kurt Lieber <klieber at gentoo.org>
To: gentoo-announce at lists.gentoo.org
Cc: bugtraq at securityfocus.com, full-disclosure at lists.netsys.com,
     security-alerts at linuxsecurity.com, gentoo-core at lists.gentoo.org
Subject: [ GLSA 200404-07 ] ClamAV RAR Archive Remote Denial Of Service
    Vulnerability

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Gentoo Linux Security Advisory                           GLSA 200404-07
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                                             http://security.gentoo.org
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  Severity: Normal
     Title: ClamAV RAR Archive Remote Denial Of Service Vulnerability

      Date: April 07, 2004
      Bugs: #45357
        ID: 200404-07

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Synopsis
========

ClamAV is vulnerable to a denial of service attack when processing
certain RAR archives.

Background
==========

>From http://www.clamav.net/ :

"Clam AntiVirus is a GPL anti-virus toolkit for UNIX. The main purpose
of this software is the integration with mail servers (attachment
scanning). The package provides a flexible and scalable multi-threaded
daemon, a command line scanner, and a tool for automatic updating via
Internet. The programs are based on a shared library distributed with
the Clam AntiVirus package, which you can use with your own software.
Most importantly, the virus database is kept up to date."

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

    -------------------------------------------------------------------
     Package          /   Vulnerable   /                    Unaffected
    -------------------------------------------------------------------
     net-mail/clamav        <= 0.68                          >= 0.68.1

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

Certain types of RAR archives, including those created by variants of
the W32.Beagle.A at mm worm, may cause clamav to crash when it attempts to
process them.

Impact
======

This vulnerability causes a Denial of Service in the clamav process.
Depending on configuration, this may cause dependent services such as
mail to fail as well.

Workaround
==========

A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.

Resolution
==========

ClamAV users should upgrade to version 0.68.1 or later:

    # emerge sync

    # emerge -pv ">=net-mail/clamav-0.68.1"
    # emerge ">=net-mail/clamav-0.68.1"

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.org or alternatively, you may file a bug at
http://bugs.gentoo.org.