GLSA 201207-08: Gnash: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Gnash: Multiple vulnerabilities
Date:	07/09/2012
Bugs:	#391283, #408209
ID:	201207-08

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	Architecture(s)
www-plugins/gnash	< 0.8.10-r2	>= 0.8.10-r2	All supported architectures

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

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.