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Vulnerability Note VU#395496

NetGear wireless driver fails to properly process certain 802.11 management frames

Overview

A buffer overflow vulnerability exists in the Netgear MA521nd5.SYS wireless driver. Successful exploitation of this vulnerability may allow an attacker to execute arbitrary code, or cause a denial-of-service condition.

I. Description

The MA521nd5.SYS driver is a wireless (802.11b) device driver produced by Netgear.

A buffer overflow vulnerability has been reported in the MA521nd5.SYS driver. An attacker within radio range may be able to trigger the overflow by sending a specially-crafted 802.11 management frame to a vulnerable system. Since 802.11b and 802.11g management frames are not encrypted, using wireless encryption (WEP/WPA) does not mitigate this vulnerability.


Note that Linux or Unix systems that use NDISWrapper or similar technologies to load the MA521nd5.SYS driver may also be vulnerable.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary code, or cause a denial-of-service condition on a vulnerable system.

III. Solution

We are currently unaware of a practical solution to this problem.


Disable wireless adapters

Disabling wireless adapters may reduce the chances of this vulnerability being exploited.

Systems Affected

VendorStatusDate NotifiedDate Updated
Netgear, Inc.Unknown20-Nov-2006

References


http://projects.info-pull.com/mokb/MOKB-18-11-2006.html
http://secunia.com/advisories/23036/

Credit

This issue was reported by Laurent Butti, H D Moore and LMH on the Month of Kernel Bugs website.

This document was written by Ryan Giobbi.

Other Information

Date Public:2006-11-18
Date First Published:2006-11-20
Date Last Updated:2006-11-20
CERT Advisory: 
CVE-ID(s): 
NVD-ID(s): 
US-CERT Technical Alerts: 
Metric:3.99
Document Revision:25

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