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Cisco announced multiple WLC vulnerabilities this week.

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-wlc

Cisco Wireless LAN Controllers HTTP Denial of Service Vulnerability

The Cisco Wireless LAN Controller (WLC) product family is affected by a denial of service (DoS) vulnerability that could allow an unauthenticated, remote attacker to cause the device to crash by submitting a malformed URL to the administrative management interface.

This vulnerability is documented in Cisco bug ID CSCts81997 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0368.

Cisco Wireless LAN Controllers IPv6 Denial of Service Vulnerability

The Cisco Wireless LAN Controller (WLC) product family is affected by a denial of service (DoS) vulnerability where an unauthenticated attacker could cause a device reload by sending a series of IPv6 packets.

This vulnerability is documented in Cisco bug ID CSCtt07949 (registered customers only) and has been assigned CVE ID CVE-2012-0369.

Cisco Wireless LAN Controllers WebAuth Denial of Service Vulnerability

The Cisco Wireless LAN Controller (WLC) product family is affected by a denial of service (DoS) vulnerability where an unauthenticated attacker could cause a device reload by sending a series of HTTP or HTTPS packets to an affected controller configured for WebAuth.

This vulnerability can be exploited from both wired and wireless segments. A TCP three-way handshake is needed in order to exploit this vulnerability.

This vulnerability is documented in Cisco bug ID CSCtt47435 (registered customers only)and has been assigned CVE ID CVE-2012-0370.

Cisco Wireless LAN Controllers Unauthorized Access Vulnerability

The Cisco Wireless LAN Controller (WLC) product family is affected by an unauthorized access vulnerability where an unauthenticated attacker could view and modify the configuration of an affected Cisco WLC.

This vulnerability exists if CPU based access control lists (ACLs) are configured in the wireless controller. An attacker can exploit this vulnerability by connecting to the controller over TCP port 1023. Only the Cisco 4400 Series WLCs, WiSM version 1, and Cisco Catalyst 3750G Integrated WLCs are affected by this vulnerability.

This vulnerability is documented in Cisco bug ID CSCtu56709 (registered customers only) and has been assigned CVE ID CVE-2012-0371.