MadWifi: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200706-04 / madwifi-ng
Release Date	June 11, 2007
Latest Revision	June 11, 2007: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-wireless/madwifi-ng	< 0.9.3.1	>= 0.9.3.1	All supported architectures

Related bugreports: #179532

Synopsis

Multiple vulnerabilities have been discovered in MadWifi, possibly allowing for the execution of arbitrary code or a Denial of Service.

2. Impact Information

Background

The MadWifi driver provides support for Atheros based IEEE 802.11 Wireless Lan cards.

Description

Md Sohail Ahmad from AirTight Networks has discovered a divison by zero in the ath_beacon_config() function (CVE-2007-2830). The vendor has corrected an input validation error in the ieee80211_ioctl_getwmmparams() and ieee80211_ioctl_getwmmparams() functions(CVE-207-2831), and an input sanitization error when parsing nested 802.3 Ethernet frame lengths (CVE-2007-2829).

Impact

An attacker could send specially crafted packets to a vulnerable host to exploit one of these vulnerabilities, possibly resulting in the execution of arbitrary code with root privileges, or a Denial of Service.

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-0.9.3.1"

4. References

Page updated June 11, 2007

Summary: This is a Gentoo Linux Security Advisory

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