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Gentoo Linux Security Advisory                           GLSA 201701-37
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libxml2: Multiple vulnerabilities
     Date: January 16, 2017
     Bugs: #564776, #566374, #572878, #573820, #577998, #582538,
           #582540, #583888, #589816, #597112, #597114, #597116
       ID: 201701-37

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Synopsis
=======
Multiple vulnerabilities have been found in libxml2, the worst of which
could lead to the execution of arbitrary code.

Background
=========
libxml2 is the XML (eXtended Markup Language) C parser and toolkit
initially developed for the Gnome project.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libxml2            < 2.9.4-r1               >= 2.9.4-r1

Description
==========
Multiple vulnerabilities have been discovered in libxml2. Please review
the CVE identifiers referenced below for details.

Impact
=====
A remote attacker could entice a user or automated system to process a
specially crafted XML document, 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 libxml2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.4-r1"

References
=========
[  1 ] CVE-2015-1819
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1819
[  2 ] CVE-2015-5312
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-5312
[  3 ] CVE-2015-7497
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7497
[  4 ] CVE-2015-7498
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7498
[  5 ] CVE-2015-7499
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7499
[  6 ] CVE-2015-7500
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7500
[  7 ] CVE-2015-7941
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7941
[  8 ] CVE-2015-7942
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7942
[  9 ] CVE-2015-8035
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8035
[ 10 ] CVE-2015-8242
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8242
[ 11 ] CVE-2015-8806
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8806
[ 12 ] CVE-2016-1836
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1836
[ 13 ] CVE-2016-1838
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1838
[ 14 ] CVE-2016-1839
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1839
[ 15 ] CVE-2016-1840
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1840
[ 16 ] CVE-2016-2073
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2073
[ 17 ] CVE-2016-3627
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3627
[ 18 ] CVE-2016-3705
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3705
[ 19 ] CVE-2016-4483
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4483
[ 20 ] CVE-2016-4658
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4658
[ 21 ] CVE-2016-5131
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-5131

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

 https://security.gentoo.org/glsa/201701-37

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/