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[gentoo-announce] [ GLSA 200907-12 ] ISC DHCP: dhcpclient Remote execution of

Posted on 14 July 2009
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 200907-12
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http://security.gentoo.org/
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Severity: High
Title: ISC DHCP: dhcpclient Remote execution of arbitrary code
Date: July 14, 2009
Bugs: #277729
ID: 200907-12

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Synopsis
========
A buffer overflow in dhclient as included in the ISC DHCP
implementation allows for the remote execution of arbitrary code with
root privileges.

Background
==========
ISC DHCP is the reference implementation of the Dynamic Host
Configuration Protocol as specified in RFC 2131.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/dhcp < 3.1.1-r1 >= 3.1.1-r1

Description
===========
The Mandriva Linux Engineering Team has reported a stack-based buffer
overflow in the subnet-mask handling of dhclient.

Impact
======
A remote attacker might set up a rogue DHCP server in a victim's local
network, possibly leading to the execution of arbitrary code with root
privileges.

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-r1"

References
==========
[ 1 ] CVE-2009-0692
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692

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

http://security.gentoo.org/glsa/glsa-200907-12.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 2009 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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