full-disclosure - [ GLSA 200907-01 ] libwmf: User-assisted execution of arbitrary code

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Date: Thu, 02 Jul 2009 21:36:57 +0200
From: Alex Legler <a3li@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200907-01 ] libwmf: User-assisted
 execution of arbitrary code

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Gentoo Linux Security Advisory                           GLSA 200907-01
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: libwmf: User-assisted execution of arbitrary code
      Date: July 02, 2009
      Bugs: #268161
        ID: 200907-01

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Synopsis
========

libwmf bundles an old GD version which contains a "use-after-free"
vulnerability.

Background
==========

libwmf is a library for converting WMF files.

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

    -------------------------------------------------------------------
     Package            /   Vulnerable   /                  Unaffected
    -------------------------------------------------------------------
  1  media-libs/libwmf     < 0.2.8.4-r3                  >= 0.2.8.4-r3

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

The embedded fork of the GD library introduced a "use-after-free"
vulnerability in a modification which is specific to libwmf.

Impact
======

A remote attacker could entice a user to open a specially crafted WMF
file, possibly resulting in the execution of arbitrary code with the
privileges of the user running the application, or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libwmf users should upgrade to the latest version which no longer
builds the GD library:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libwmf-0.2.8.4-r3"

References
==========

  [ 1 ] CVE-2009-1364
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1364

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

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

  http://security.gentoo.org/glsa/glsa-200907-01.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2009 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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