- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200511-04
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: High
     Title: ClamAV: Multiple vulnerabilities
      Date: November 06, 2005
      Bugs: #109213
        ID: 200511-04

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

ClamAV has many security flaws which make it vulnerable to remote
execution of arbitrary code and a Denial of Service.

Background
==========

ClamAV is a GPL anti-virus toolkit, designed for integration with mail
servers to perform attachment scanning. ClamAV also provides a command
line scanner and a tool for fetching updates of the virus database.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav      < 0.87.1                      >= 0.87.1

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

ClamAV has multiple security flaws: a boundary check was performed
incorrectly in petite.c, a buffer size calculation in unfsg_133 was
incorrect in fsg.c, a possible infinite loop was fixed in tnef.c and a
possible infinite loop in cabd_find was fixed in cabd.c . In addition
to this, Marcin Owsiany reported that a corrupted DOC file causes a
segmentation fault in ClamAV.

Impact
======

By sending a malicious attachment to a mail server that is hooked with
ClamAV, a remote attacker could cause a Denial of Service or 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-0.87.1"

References
==========

  [ 1 ] CAN-2005-3239
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3239
  [ 2 ] CAN-2005-3303
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3303
  [ 3 ] ClamAV release notes
        http://sourceforge.net/project/shownotes.php?release_id=368319
  [ 4 ] Zero Day Initiative advisory
        http://www.zerodayinitiative.com/advisories/ZDI-05-002.html

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

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

  http://security.gentoo.org/glsa/glsa-200511-04.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 2005 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