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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