[Full-disclosure] [ GLSA 200610-10 ] ClamAV: Multiple Vulnerabilities

[Raphael Marichez]

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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 at 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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