Atheros Driver Reserved Frame Vulnerability

2009.11.16
Credit: Laurent Butti
Risk: Medium
Local: No
Remote: Yes


CVSS Base Score: 5.5/10
Impact Subscore: 6.9/10
Exploitability Subscore: 5.1/10
Exploit range: Adjacent network
Attack complexity: Low
Authentication: Single time
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

Title: ------ * Atheros Driver Reserved Frame Vulnerability Summary: -------- * The wireless driver in some Wi-Fi access points (such as the ATHEROS-based Netgear WNDAP330) do not correctly parse malformed reserved management frames. Assigned CVE: ------------- * CVE-2009-0052 Details: -------- * The bug can be triggered by a malicious reserved management frame sent to the wireless access point (truncated packet). This can be achieved only after a successful 802.11 authentication (in "Open" mode according to the configuration of the wireless access point) and a successful 802.11 association with appropriate security parameters (e.g. WPA w/ TKIP unicast, TKIP multicast) which depends on the configuration of the wireless access point. Attack Impact: -------------- * Denial-of-service (reboot or hang-up) and possibly remote arbitrary code execution Attack Vector: -------------- * Unauthenticated wireless device for WPA/WPA2-PSK and EAP-based authenticated wireless device for WPA/WPA2-EAP Timeline: --------- * 2008-09-30 - Vulnerability reported Netgear * 2008-10-02 - PoC sent to Netgear * 2009-10-14 - Netgear released a patched firmware (3.0.3) * 2009-11-10 - Release of this security advisory Affected Products: ------------------ * Netgear WNDAP330 (firmware 2.1.11) with ATHEROS AR9160-BC1A chipset Vulnerable Devices: ------------------- * As it is a wireless driver specific issue, the wireless vendor should use the latest chipset wireless driver for their access point firmwares. This security vulnerability was reported to Netgear, updated firmwares should be available on their web site. Any other wireless device relying on this vulnerable wireless driver is likely to be vulnerable. Credits: -------- * This vulnerability was discovered by Laurent Butti from France Telecom / Orange

References:

http://xforce.iss.net/xforce/xfdb/54216
http://www.vupen.com/english/advisories/2009/3212
http://www.securityfocus.com/bid/36991
http://www.securityfocus.com/archive/1/archive/1/507777/100/0/threaded
http://www.osvdb.org/59880
http://secunia.com/advisories/37344


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