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Gentoo: GLSA-202201-02 Normal: Dnsmasq Remote Exploit Risk

gentoo
Calendar Grey December 17, 2015
Dist Gentoo Esm H88
A security flaw in Dnsmasq on Gentoo exposes systems to Denial of Service attacks. It is advisable to perform an upgrade to ensure protection.
A vulnerability in Dnsmasq can lead to a Denial of Service condition.

Summary

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

Topics%20covered

Topics Covered

security advisory denial of service gentoo normal dnsmasq

Resolution

All Dnsmasq users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.72-r2"

References

[ 1 ] CVE-2015-3294 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-3294

Availability

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

Severity: Normal
Title: Dnsmasq: Denial of Service
Date: December 17, 2015
Bugs: #547966
ID: 201512-01

Topics%20covered

Topics Covered

security advisory denial of service gentoo normal dnsmasq

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/dnsmasq < 2.72-r2 >= 2.72-r2

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.

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