[ GLSA 200704-21 ] ClamAV: Multiple vulnerabilities

[Matthias Geerdsen <vorlon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200704-21
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                                            http://security.gentoo.org/
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  Severity: High
     Title: ClamAV: Multiple vulnerabilities
      Date: April 24, 2007
      Bugs: #174375
        ID: 200704-21

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Synopsis
========

Multiple vulnerabilities have been discovered in ClamAV allowing for
the remote execution of arbitrary code.

Background
==========

ClamAV is a GPL virus scanner.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav      < 0.90.2                      >= 0.90.2

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

iDefense Labs have reported a stack-based buffer overflow in the
cab_unstore() function when processing negative values in .cab files.
Multiple file descriptor leaks have also been reported in chmunpack.c,
pdf.c and dblock.c when processing .chm files.

Impact
======

A remote attacker could send a specially crafted CHM file to the
scanner, possibly resulting in the remote execution of arbitrary code
with the privileges 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-0.90.2"

References
==========

  [ 1 ] CVE-2007-1745
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1745
  [ 2 ] CVE-2007-1997
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1997

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

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

  http://security.gentoo.org/glsa/glsa-200704-21.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 2007 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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