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Gentoo Linux Security Advisory                           GLSA 201207-08
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Gnash: Multiple vulnerabilities
     Date: July 09, 2012
     Bugs: #391283, #408209
       ID: 201207-08

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Synopsis
========

Multiple vulnerabilities have been found in Gnash which could result in
execution of arbitrary code, Denial of Service, or information
disclosure.

Background
==========

Gnash is a GNU flash movie player that supports many SWF features.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  www-plugins/gnash          < 0.8.10-r2              >= 0.8.10-r2

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

Multiple vulnerabilities have been found in Gnash:

* The "nsPluginInstance::setupCookies()" function in plugin.cpp creates
  world-readable cookies with predictable file names (CVE-2011-4328).
* The "GnashImage::size()" function in GnashImage.h contains an integer
  overflow error which could cause a heap-based buffer overflow
  (CVE-2012-1175).

Impact
======

A remote attacker could entice a user to open a specially crafted SWF
file, possibly resulting in execution of arbitrary code or a Denial of
Service condition. Furthermore, a local attacker may be able to obtain
sensitive information.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Gnash users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-plugins/gnash-0.8.10-r2"

References
==========

[ 1 ] CVE-2011-4328
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4328
[ 2 ] CVE-2012-1175
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1175

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

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

 http://security.gentoo.org/glsa/glsa-201207-08.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 2012 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