GLSA 201404-03: OptiPNG: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	OptiPNG: User-assisted execution of arbitrary code
Date:	04/07/2014
Bugs:	#435340
ID:	201404-03

Synopsis

A use-after-free error in OptiPNG could result in execution of arbitrary code or Denial of Service.

Background

OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-gfx/optipng	< 0.7.3	>= 0.7.3	All supported architectures

Description

A use-after-free vulnerability exists in the palette reduction functionality of OptiPNG.

Impact

A remote attacker could entice a user to open a specially crafted image file, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All OptiPNG users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=media-gfx/optipng-0.7.3"

References

CVE-2012-4432

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201404-03.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.