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[gentoo-announce] [ GLSA 201406-24 ] Dnsmasq: Denial of Service

Posted on 26 June 2014
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201406-24
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http://security.gentoo.org/
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Severity: Normal
Title: Dnsmasq: Denial of Service
Date: June 25, 2014
Bugs: #436894, #453170
ID: 201406-24

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Synopsis
========
A vulnerability in Dnsmasq can lead to a Denial of Service condition.

Background
==========
Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP
server.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-dns/dnsmasq < 2.66 >= 2.66

Description
===========
When used with certain libvirt configurations Dnsmasq replies to
queries from prohibited interfaces.

Impact
======
A remote attackers can cause a Denial of Service via spoofed TCP based
DNS queries.

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

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.66"

References
==========
[ 1 ] CVE-2012-3411
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3411
[ 2 ] CVE-2013-0198
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0198

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

http://security.gentoo.org/glsa/glsa-201406-24.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 2014 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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