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

[Tobias Heinlein <keytoaster () gentoo org>]

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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 () gentoo 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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