[ GLSA 200712-04 ] Cairo: User-assisted execution of arbitrary code

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200712-04
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Cairo: User-assisted execution of arbitrary code
      Date: December 09, 2007
      Bugs: #200350
        ID: 200712-04

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Synopsis
========

Multiple integer overflows were discovered in Cairo, possibly leading
to the execution of arbitrary code.

Background
==========

Cairo is a 2D vector graphics library with cross-device output support.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  x11-libs/cairo      < 1.4.12                            >= 1.4.12

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

Multiple integer overflows were reported, one of which Peter Valchev
(Google Security) found to be leading to a heap-based buffer overflow
in the cairo_image_surface_create_from_png() function that processes
PNG images.

Impact
======

A remote attacker could entice a user to view or process a specially
crafted PNG image file in an application linked against Cairo, possibly
leading to the execution of arbitrary code with the privileges of the
user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cairo users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=x11-libs/cairo-1.4.12"

References
==========

  [ 1 ] CVE-2007-5503
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5503

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

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

  http://security.gentoo.org/glsa/glsa-200712-04.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 2007 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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