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Gentoo Linux Security Advisory                           GLSA 201608-01
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: OptiPNG: Multiple vulnerabilities
     Date: August 11, 2016
     Bugs: #561882, #579030
       ID: 201608-01

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Synopsis
=======
Multiple vulnerabilities have been found in OptiPNG, the worst of which
could lead to the remote execution of arbitrary code, or cause a Denial
of Service condition.

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

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-gfx/optipng            < 0.7.6                    >= 0.7.6

Description
==========
Multiple vulnerabilities have been discovered in OptiPNG. Please review
the CVE identifiers referenced below for details.

Impact
=====
A remote attacker could entice a user to open a specially crafted image
file resulting in the 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-0.7.6"

References
=========
[ 1 ] CVE-2016-2191
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2191
[ 2 ] CVE-2016-3981
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3981
[ 3 ] CVE-2016-3982
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3982

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/201608-01

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.

License
======
Copyright 2016 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/