Full Disclosure: [ GLSA 200907-01 ] libwmf: User-assisted execution of arbitrary code

[Alex Legler <a3li () gentoo org>]

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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 () gentoo 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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