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Gentoo Linux Security Advisory                           GLSA 201702-25
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libass: Multiple vulnerabilities
     Date: February 20, 2017
     Bugs: #596422
       ID: 201702-25

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Synopsis
=======
Multiple vulnerabilities have been found in libass, the worst of which
have unknown impacts.

Background
=========
libass is a portable subtitle renderer for the ASS/SSA (Advanced
Substation Alpha/Substation Alpha) subtitle format.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-libs/libass            < 0.13.4                  >= 0.13.4

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

Impact
=====
A remote attacker could cause a Denial of Service condition or other
unknown impacts via unknown attack vectors.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All libass users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-libs/libass-0.13.4"

References
=========
[ 1 ] CVE-2016-7969
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-7969
[ 2 ] CVE-2016-7970
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-7970
[ 3 ] CVE-2016-7971
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-7971
[ 4 ] CVE-2016-7972
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-7972

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

 https://security.gentoo.org/glsa/201702-25

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 2017 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/