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TUCoPS :: Linux :: Gentoo :: bx3987.htm

ISC DHCP: Denial of Service



ISC DHCP: Denial of Service
ISC DHCP: Denial of Service



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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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