Date: Wed, 07 Nov 2007 21:43:26 +0100
From: Pierre-Yves Rofes <py@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200711-09 ] MadWifi: Denial of Service
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Gentoo Linux Security Advisory GLSA 200711-09
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http://security.gentoo.org/
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Severity: Normal
Title: MadWifi: Denial of Service
Date: November 07, 2007
Bugs: #195705
ID: 200711-09
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Synopsis
========
MadWifi does not correctly process beacon frames which can lead to a
remotely triggered Denial of Service.
Background
==========
The MadWifi driver provides support for Atheros based IEEE 802.11
Wireless Lan cards.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-wireless/madwifi-ng < 0.9.3.3 >= 0.9.3.3
Description
===========
Clemens Kolbitsch and Sylvester Keil reported an error when processing
beacon frames with an overly large "length" value in the "xrates"
element.
Impact
======
A remote attacker could act as an access point and send a specially
crafted packet to an Atheros based wireless client, possibly resulting
in a Denial of Service (kernel panic).
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All MadWifi users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.3.3"
References
==========
[ 1 ] CVE-2007-5448
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5448
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200711-09.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 2007 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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