bugtraq - [ GLSA 200806-02 ] libxslt: Execution of arbitrary code

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Date: Tue, 03 Jun 2008 17:42:11 +0200
From: Tobias Heinlein <keytoaster@...too.org>
To: gentoo-announce@...too.org
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200806-02 ] libxslt: Execution of arbitrary code

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Gentoo Linux Security Advisory                           GLSA 200806-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: libxslt: Execution of arbitrary code
      Date: June 03, 2008
      Bugs: #222499
        ID: 200806-02

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Synopsis
========

A vulnerability was found in libxslt, possibly resulting in the
execution of arbitrary code and Denial of Service.

Background
==========

Libxslt is the XSLT C library developed for the GNOME project. XSLT
itself is an XML language to define transformations for XML.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libxslt      < 1.1.24                          >= 1.1.24

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

Anthony de Almeida Lopes reported a vulnerability in libxslt when
handling XSL style-sheet files, which could be exploited to trigger the
use of uninitialized memory, e.g. in a call to "free()".

Impact
======

A remote attacker could entice a user or automated system to process an
XML file using a specially crafted XSL transformation file, possibly
resulting in the execution of arbitrary code or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libxslt users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/libxslt-1.1.24"

References
==========

  [ 1 ] CVE-2008-1767
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1767

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

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

  http://security.gentoo.org/glsa/glsa-200806-02.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 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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