GLSA 200907-01 libwmf: User-assisted execution of arbitrary code
Posted on: 07/02/2009 08:45 PM

A new security update has been released for Gentoo Linux - libwmf: User-assisted execution of arbitrary code. Here the announcement:

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 lt; 0.2.8.4-r3 gt;= 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 "gt;=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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