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Gnash: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201207-08 / Gnash
Release Date July 09, 2012
Latest Revision July 09, 2012: 1
Impact normal
Exploitable local, remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-plugins/gnash < 0.8.10-r2 >= 0.8.10-r2 All supported architectures

Related bugreports: #391283, #408209


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

2.  Impact Information


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


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).


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.

3.  Resolution Information


There is no known workaround at this time.


All Gnash users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4.  References


Page updated July 09, 2012

Summary: This is a Gentoo Linux Security Advisory

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