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Gentoo Linux Security Advisory 201207-08

Gentoo Linux Security Advisory 201207-08
Posted Jul 10, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201207-8 - Multiple vulnerabilities have been found in Gnash which could result in execution of arbitrary code, Denial of Service, or information disclosure. Versions less than 0.8.10-r2 are affected.

tags | advisory, denial of service, arbitrary, vulnerability, info disclosure
systems | linux, gentoo
advisories | CVE-2011-4328, CVE-2012-1175
MD5 | e6e2d553c33740de050f6fb92ded0bad

Gentoo Linux Security Advisory 201207-08

Change Mirror Download
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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
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