Joined: 12 May 2004
|Posted: Wed Nov 07, 2007 11:26 pm Post subject: [ GLSA 200711-09 ] MadWifi: Denial of Service
|Gentoo Linux Security Advisory
Title: MadWifi: Denial of Service (GLSA 200711-09)
Date: November 07, 2007
MadWifi does not correctly process beacon frames which can lead to a remotely triggered Denial of Service.
The MadWifi driver provides support for Atheros based IEEE 802.11 Wireless Lan cards.
Vulnerable: < 0.9.3.3
Unaffected: >= 0.9.3.3
Architectures: All supported architectures
Clemens Kolbitsch and Sylvester Keil reported an error when processing beacon frames with an overly large "length" value in the "xrates" element.
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).
There is no known workaround at this time.
All MadWifi users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.3.3"