Description

Cisco has reported a vulnerability in various Cisco Aironet Access Points (AP) running Cisco IOS software, which can be exploited by malicious people to gain knowledge of any static Wired Equivalent Privacy (WEP) keys.

The problem is that a vulnerable AP will send static WEP keys to the SNMP server in clear text when a key is changed or the device is rebooted, if the "snmp-server enable traps wlan-wep" command is enabled (disabled by default).

This may disclose the WEP keys to malicious people, who are able to monitor traffic between the AP and SNMP server.

The vulnerability affects Cisco Aironet 1100, 1200, and 1400 series running IOS releases 12.2(8)JA, 12.2(11)JA, and 12.2(11)JA1.

Solution
Install IOS release 12.2(13)JA1 or later.
Further details available to Secunia VIM customers

Original Advisory
SNMP Trap Reveals WEP Key in Cisco Aironet Access Point:
http://www.cisco.com/warp/public/707/cisco-sa-20031202-SNMP-trap.shtml

Deep Links
Links available to Secunia VIM customers