GLSA 200507-16: dhcpcd: Denial of Service vulnerability
Posted on: 07/15/2005 04:14 PM

A dhcpcd update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200507-16
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http://security.gentoo.org/
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Severity: Normal
Title: dhcpcd: Denial of Service vulnerability
Date: July 15, 2005
Bugs: #98394
ID: 200507-16

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Synopsis
=======

A vulnerability in dhcpcd may cause the dhcpcd daemon to crash.

Background
=========

dhcpcd is a standards compliant DHCP client daemon. It requests an IP address and other information from the DHCP server, automatically configures the network interface, and tries to renew the lease time.

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

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Package / Vulnerable / Unaffected
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1 net-misc/dhcpcd lt; 1.3.22_p4-r11 gt;= 1.3.22_p4-r11

Description
==========

infamous42md discovered that dhcpcd can be tricked to read past the end of the supplied DHCP buffer. As a result, this might lead to a crash of the daemon.

Impact
=====

With a malicious DHCP server an attacker could cause a Denial of Service by crashing the DHCP client.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All dhcpcd users should upgrade to the latest available version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=net-misc/dhcpcd-1.3.22_p4-r11"

References
=========

[ 1 ] CAN-2005-1848
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1848

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

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

http://security.gentoo.org/glsa/glsa-200507-16.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 2005 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/2.0


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