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Gentoo Linux Security Advisory                           GLSA 200610-10
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                                            http://security.gentoo.org/
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  Severity: High
     Title: ClamAV: Multiple Vulnerabilities
      Date: October 24, 2006
      Bugs: #151561
        ID: 200610-10

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Synopsis
========

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

Background
==========

ClamAV is a GPL virus scanner.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav      < 0.88.5                      >= 0.88.5

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

Damian Put and an anonymous researcher reported a potential heap-based
buffer overflow vulnerability in rebuildpe.c responsible for the
rebuilding of an unpacked PE file, and a possible crash in chmunpack.c
in the CHM unpacker.

Impact
======

By sending a malicious attachment to a mail server running ClamAV, or
providing a malicious file to ClamAV through any other method, a remote
attacker could 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
 ">=app-antivirus/clamav-0.88.5"

References
==========

  [ 1 ] Original commit log
        http://sourceforge.net/project/shownotes.php?release_id=455799
  [ 2 ] CVE-2006-4182
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4182

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

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

  http://security.gentoo.org/glsa/glsa-200610-10.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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