GLSA 200711-09: MadWifi: Denial of Service
| Severity: | normal |
| Title: | MadWifi: Denial of Service |
| Date: | 11/07/2007 |
| Bugs: | |
| 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 | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-wireless/madwifi-ng | < 0.9.3.3 | >= 0.9.3.3 | 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:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.3.3"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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 https://bugs.gentoo.org.
License
Copyright 2010 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.