GLSA 201512-01: Dnsmasq: Denial of Service

http://security.gentoo.org/

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

CVE-2015-3294

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.