[ GLSA 200605-03 ] ClamAV: Buffer overflow in Freshclam

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200605-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: ClamAV: Buffer overflow in Freshclam
      Date: May 02, 2006
      Bugs: #131791
        ID: 200605-03

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Synopsis
========

Freshclam is vulnerable to a buffer overflow that could lead to
execution of arbitrary code.

Background
==========

ClamAV is a GPL virus scanner. Freshclam is a utility to download virus
signature updates.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav      < 0.88.2                      >= 0.88.2

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

Ulf Harnhammar and an anonymous German researcher discovered that
Freshclam fails to check the size of the header data returned by a
webserver.

Impact
======

By enticing a user to connect to a malicious webserver an attacker
could cause the execution of arbitrary code.

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-0.88.2"

References
==========

  [ 1 ] CVE-2006-1989
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1989

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

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

  http://security.gentoo.org/glsa/glsa-200605-03.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/2.0

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