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[gentoo-announce] [ GLSA 201204-02 ] InspIRCd: Arbitrary code execution

Posted on 10 April 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201204-02
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http://security.gentoo.org/
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Severity: High
Title: InspIRCd: Arbitrary code execution
Date: April 10, 2012
Bugs: #409159
ID: 201204-02

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Synopsis
========
A heap-based buffer overflow in InspIRCd may allow execution of
arbitrary code.

Background
==========
InspIRCd (Inspire IRCd) is a modular C++ IRC daemon

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-irc/inspircd < 2.0.5-r1 >= 2.0.5-r1

Description
===========
A vulnerability in InspIRCd allows DNS compression features to control
the number of overflowed bytes sent to the heap-based buffer "res[]" in
dns.cpp.

Impact
======
A remote attacker could send specially crafted DNS responses, 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 InspIRCd users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/inspircd-2.0.5-r1"

References
==========
[ 1 ] CVE-2012-1836
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1836

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

http://security.gentoo.org/glsa/glsa-201204-02.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 2012 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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