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

[GLSA]

Gentoo Linux Security Advisory

Title: OptiPNG: User-assisted execution of arbitrary code (GLSA 201404-03)
Severity: normal
Exploitable: remote
Date: April 07, 2014
Bug(s): #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: media-gfx/optipng
Vulnerable: < 0.7.3
Unaffected: >= 0.7.3
Architectures: 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: