Gentoo: 201312-08 WebP: User-assisted execution of arbitrary code
Posted by Benjamin D. Thomas   
Gentoo An integer overflow vulnerability in WebP could lead to arbitrary code execution or Denial of Service.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 201312-08
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Normal
    Title: WebP: User-assisted execution of arbitrary code
     Date: December 10, 2013
     Bugs: #442152
       ID: 201312-08

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

An integer overflow vulnerability in WebP could lead to arbitrary code
execution or Denial of Service.

Background
==========

WebP is a lossy image compression format.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-libs/libwebp           < 0.2.1                    >= 0.2.1

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

An integer overflow flaw has been found in WebP.

Impact
======

A remote attacker could entice a user to open a specially crafted image
in an application linked against WebP, possibly resulting in execution
of arbitrary code with the privileges of the process or a Denial of
Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All WebP users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-libs/libwebp-0.2.1"

References
==========

[ 1 ] CVE-2012-5127
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5127

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

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

 http://security.gentoo.org/glsa/glsa-201312-08.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
https://bugs.gentoo.org.

License

Copyright 2013 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