[Full-disclosure] [ GLSA 200809-18 ] ClamAV: Multiple Denials of Service

[Pierre-Yves Rofes]

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Gentoo Linux Security Advisory                           GLSA 200809-18
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                                              http://security.gentoo.org/
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    Severity: Normal
       Title: ClamAV: Multiple Denials of Service
        Date: September 25, 2008
        Bugs: #236665
          ID: 200809-18

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Synopsis
========

Multiple vulnerabilities in ClamAV may result in a Denial of Service.

Background
==========

Clam AntiVirus is a free anti-virus toolkit for UNIX, designed
especially for e-mail scanning on mail gateways.

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

      -------------------------------------------------------------------
       Package               /  Vulnerable  /                 Unaffected
      -------------------------------------------------------------------
    1  app-antivirus/clamav       < 0.94                         >= 0.94

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

Hanno boeck reported an error in libclamav/chmunpack.c when processing
CHM files (CVE-2008-1389). Other unspecified vulnerabilites were also
reported, including a NULL pointer dereference in libclamav
(CVE-2008-3912), memory leaks in freshclam/manager.c (CVE-2008-3913),
and file descriptor leaks in libclamav/others.c and libclamav/sis.c
(CVE-2008-3914).

Impact
======

A remote attacker could entice a user or automated system to scan a
specially crafted CHM, possibly resulting in a Denial of Service
(daemon crash). The other attack vectors mentioned above could also
result in a Denial of Service.

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-0.94"

References
==========

    [ 1 ] CVE-2008-1389
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1389
    [ 2 ] CVE-2008-3912
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3912
    [ 3 ] CVE-2008-3913
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3913
    [ 4 ] CVE-2008-3914
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3914

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

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

    http://security.gentoo.org/glsa/glsa-200809-18.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 2008 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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