[gentoo-announce] [ GLSA 200808-05 ] ISC DHCP: Denial of Service

[Tobias Heinlein <keytoaster@gentoo.org>]

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Gentoo Linux Security Advisory                           GLSA 200808-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: ISC DHCP: Denial of Service
      Date: August 06, 2008
      Bugs: #227135
        ID: 200808-05

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Synopsis
========

A Denial of Service vulnerability was discovered in ISC DHCP.

Background
==========

ISC DHCP is ISC's reference implementation of all aspects of the
Dynamic Host Configuration Protocol.

Affected packages
=================

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  net-misc/dhcp       < 3.1.1                              >= 3.1.1

Description
===========

A buffer overflow error was found in ISC DHCP server, that can only be
exploited under unusual server configurations where the DHCP server is
configured to provide clients with a large set of DHCP options.

Impact
======

A remote attacker could exploit this vulnerability to cause a Denial of
Service.

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-3.1.1"

References
==========

  [ 1 ] CVE-2007-0062
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0062

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200808-05.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
http://bugs.gentoo.org.

License
=======

Copyright 2008 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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