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[gentoo-announce] [ GLSA 201401-05 ] ISC DHCP: Denial of Service

Posted on 06 January 2014
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201401-05
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http://security.gentoo.org/
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Severity: Normal
Title: ISC DHCP: Denial of Service
Date: January 06, 2014
Bugs: #463848
ID: 201401-05

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Synopsis
========
A memory exhaustion vulnerability in ISC DHCP could lead to Denial of
Service.

Background
==========
ISC DHCP is a Dynamic Host Configuration Protocol (DHCP) client/server.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/dhcp < 4.2.5_p1 >= 4.2.5_p1

Description
===========
ISC DHCP is vulnerable to a memory exhaustion attack involving regular
expressions sent by DHCP clients.

Impact
======
A remote attacker could send a specially crafted request from a
malicious or spoofed client, potentially leading to a Denial of Service
condition.

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

Resolution
==========
All ISC DHCP users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.2.5_p1"

References
==========
[ 1 ] CVE-2013-2494
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2494

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

http://security.gentoo.org/glsa/glsa-201401-05.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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