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Gentoo Linux Security Advisory                           GLSA 201701-10
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libotr, Pidgin OTR: Remote execution of arbitrary code
     Date: January 02, 2017
     Bugs: #576914, #576916
       ID: 201701-10

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Synopsis
=======
Multiple vulnerabilities have been found in libotr and Pidgin OTR,
allowing remote attackers to execute arbitrary code.

Background
=========
Pidgin Off-the-Record (OTR) messaging allows you to have private
conversations over instant messaging. libotr is a portable
off-the-record messaging library.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-libs/libotr              < 4.1.1                    >= 4.1.1
  2  x11-plugins/pidgin-otr       < 4.0.2                    >= 4.0.2
    -------------------------------------------------------------------
     2 affected packages

Description
==========
Multiple vulnerabilities exist in both libotr and Pidgin OTR. Please
review the CVE identifiers for more information.

Impact
=====
A remote attacker could send a specially crafted message, possibly
resulting in the execution of arbitrary code with the privileges of the
process, or cause a Denial of Service condition.

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

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

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/libotr-4.1.1"

All Pidgin OTR users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=x11-plugins/pidgin-otr-4.0.2"

References
=========
[ 1 ] CVE-2015-8833
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8833
[ 2 ] CVE-2016-2851
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2851

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

 https://security.gentoo.org/glsa/201701-10

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/