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[gentoo-announce] [ GLSA 201309-07 ] libotr: Arbitrary code execution

Posted on 15 September 2013
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201309-07
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http://security.gentoo.org/
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Severity: High
Title: libotr: Arbitrary code execution
Date: September 15, 2013
Bugs: #430486
ID: 201309-07

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Synopsis
========
A buffer overflow vulnerability in libotr could allow a remote attacker
to execute arbitrary code or cause a Denial of Service condition.

Background
==========
libotr is a portable off-the-record messaging library.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/libotr < 3.2.1 >= 3.2.1

Description
===========
Multiple heap-based buffer overflows are present in the Base64 decoder
of libotr.

Impact
======
A remote attacker could send a specially crafted OTR message, resulting
in arbitrary code execution with the privileges of the process or 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-3.2.1"

References
==========
[ 1 ] CVE-2012-3461
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3461

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

http://security.gentoo.org/glsa/glsa-201309-07.xml

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 2013 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.

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


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