GLSA 201512-01: Dnsmasq: Denial of Service

Severity:normal
Title:Dnsmasq: Denial of Service
Date:12/17/2015
Bugs: #547966
ID:201512-01

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 Architecture(s)
net-dns/dnsmasq < 2.72-r2 >= 2.72-r2 All supported architectures

Description

An out-of-bounds read vulnerability has been found in the tcp_request function in Dnsmasq.

Impact

A remote attacker could send a specially crafted DNS request, possibly resulting in a Denial of Service condition.

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-2.72-r2"
    

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201512-01.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 2010 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.

Thank you!