From: Pierre-Yves Rofes (pygentoo.org)
Date: Sun Dec 14 2008 - 11:15:31 CST

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Gentoo Linux Security Advisory GLSA 200812-15
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                                              http://security.gentoo.org/
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    Severity: Normal
       Title: POV-Ray: User-assisted execution of arbitrary code
        Date: December 14, 2008
        Bugs: #153538
          ID: 200812-15

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Synopsis
========

POV-Ray includes a version of libpng that might allow for the execution
of arbitrary code when reading a specially crafted PNG file

Background
==========

POV-Ray is a well known open-source ray tracer.

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

      -------------------------------------------------------------------
       Package / Vulnerable / Unaffected
      -------------------------------------------------------------------
    1 media-gfx/povray < 3.6.1-r4 >= 3.6.1-r4

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

POV-Ray uses a statically linked copy of libpng to view and output PNG
files. The version shipped with POV-Ray is vulnerable to CVE-2008-3964,
CVE-2008-1382, CVE-2006-3334, CVE-2006-0481, CVE-2004-0768. A bug in
POV-Ray's build system caused it to load the old version when your
installed copy of libpng was >=media-libs/libpng-1.2.10.

Impact
======

An attacker could entice a user to load a specially crafted PNG file as
a texture, resulting in the execution of arbitrary code with the
permissions of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All POV-Ray users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=media-gfx/povray-3.6.1-r4"

References
==========

    [ 1 ] CVE-2004-0768
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0768
    [ 2 ] CVE-2006-0481
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0481
    [ 3 ] CVE-2006-3334
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3334
    [ 4 ] CVE-2008-1382
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1382
    [ 5 ] CVE-2008-3964
          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3964

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

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

    http://security.gentoo.org/glsa/glsa-200812-15.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
securitygentoo.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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