[ GLSA 200712-24 ] AMD64 x86 emulation GTK+ library: User-assisted execution of arbitrary code

[Robert Buchholz <rbu () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200712-24
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: AMD64 x86 emulation GTK+ library: User-assisted execution of
            arbitrary code
      Date: December 30, 2007
      Bugs: #201860
        ID: 200712-24

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Synopsis
========

Multiple integer overflow vulnerabilities in the AMD64 x86 emulation
GTK+ libraries may result in the execution of arbitrary code in
applications using Cairo.

Background
==========

Cairo is a 2D vector graphics library with cross-device output support.
The AMD64 x86 emulation GTK+ library packages Cairo libraries for 32bit
x86 emulation on AMD64.

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  emul-linux-x86-gtklibs     < 20071214                 >= 20071214
    -------------------------------------------------------------------
     # Package 1 only applies to AMD64 users.

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

The Cairo versions used by the AMD64 x86 emulation GTK+ libraries were
vulnerable to integer overflow vulnerabilities (GLSA 200712-04).

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 AMD64 x86 emulation GTK+ library users should upgrade to the latest
version:

    # emerge --sync
    # emerge -a -1 -v ">=app-emulation/emul-linux-x86-gtklibs-20071214"

References
==========

  [ 1 ] GLSA 200712-04
        http://www.gentoo.org/security/en/glsa/glsa-200712-04.xml

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

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

  http://security.gentoo.org/glsa/glsa-200712-24.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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