[ GLSA 200711-09 ] MadWifi: Denial of Service

[GLSA]

Gentoo Linux Security Advisory

Title: MadWifi: Denial of Service (GLSA 200711-09)
Severity: normal
Exploitable: remote
Date: November 07, 2007
Bug(s): #195705
ID: 200711-09

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: net-wireless/madwifi-ng
Vulnerable: < 0.9.3.3
Unaffected: >= 0.9.3.3
Architectures: All supported architectures


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: