MadWifi: Kernel driver buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200612-09 / madwifi-ng
Release Date	December 10, 2006
Latest Revision	December 10, 2006: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-wireless/madwifi-ng	< 0.9.2.1	>= 0.9.2.1	All supported architectures

Related bugreports: #157449

Synopsis

MadWifi is vulnerable to a buffer overflow that could potentially lead to the remote execution of arbitrary code with root privileges.

2. Impact Information

Background

MadWifi (Multiband Atheros Driver for Wireless Fidelity) provides a Linux kernel device driver for Atheros-based Wireless LAN devices.

Description

Laurent Butti, Jerome Raznieski and Julien Tinnes reported a buffer overflow in the encode_ie() and the giwscan_cb() functions from ieee80211_wireless.c.

Impact

A remote attacker could send specially crafted wireless WPA packets containing malicious RSN Information Headers (IE) that could potentially lead to the remote execution of arbitrary code as the root user.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All MadWifi users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-wireless/madwifi-ng-0.9.2.1"

4. References

CVE-2006-6332

Updated December 10, 2006

Summary: This is a Gentoo Linux Security Advisory

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