Gnash: Multiple vulnerabilities — GLSA 201207-08

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

Affected Packages

www-plugins/gnash on all architectures
Affected versions < 0.8.10-r2
Unaffected versions >= 0.8.10-r2

Background

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

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

Release Date
July 09, 2012

Latest Revision
July 09, 2012: 1

Severity
normal

Exploitable
local, remote

Bugzilla entries