Gentoo Archives: gentoo-announce

From: Sergey Popov <pinkbyte@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201401-05 ] ISC DHCP: Denial of Service
Date: Mon, 06 Jan 2014 22:15:59
Message-Id: 52CB2966.1090104@gentoo.org
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 201401-05
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Normal
    Title: ISC DHCP: Denial of Service
     Date: January 06, 2014
     Bugs: #463848
       ID: 201401-05

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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@g.o 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

Attachments

File name MIME type
signature.asc application/pgp-signature