[ GLSA 200601-07 ] ClamAV: Remote execution of arbitrary code

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

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Gentoo Linux Security Advisory                           GLSA 200601-07
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                                            http://security.gentoo.org/
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  Severity: High
     Title: ClamAV: Remote execution of arbitrary code
      Date: January 13, 2006
      Bugs: #118459
        ID: 200601-07

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Synopsis
========

ClamAV is vulnerable to a buffer overflow which may lead to remote
execution of arbitrary code.

Background
==========

ClamAV is a GPL virus scanner.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav       < 0.88                         >= 0.88

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

Zero Day Initiative (ZDI) reported a heap buffer overflow
vulnerability. The vulnerability is due to an incorrect boundary check
of the user-supplied data prior to copying it to an insufficiently
sized memory buffer. The flaw occurs when the application attempts to
handle compressed UPX files.

Impact
======

For example by sending a maliciously crafted UPX file into a mail
server that is integrated with ClamAV, a remote attacker's supplied
code could be executed with escalated privileges.

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"

References
==========

  [ 1 ] CVE-2006-0162
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0162

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

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

  http://security.gentoo.org/glsa/glsa-200601-07.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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