Cisco Wireless LAN Controllers HTTP Denial of Service Vulnerability
9 Mar. 2012
Summary
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.
Vulnerable Systems:
* Cisco 2000 Series WLC
* Cisco 2100 Series WLC
* Cisco 2500 Series WLC
* Cisco 4100 Series WLC
* Cisco 4400 Series WLC
* Cisco 5500 Series WLC
* Cisco 500 Series Wireless Express Mobility Controllers
* Cisco Wireless Services Modules (WiSM)
* Cisco Wireless Services Modules version 2 (WiSM version 2)
* Cisco NME-AIR-WLC Modules for Integrated Services Routers (ISRs)
* Cisco NM-AIR-WLC Modules for Integrated Services Routers (ISRs)
* Cisco Catalyst 3750G Integrated WLCs
* Cisco Flex 7500 Series Cloud Controllers
The administrative management interface on Cisco Wireless LAN Controller (WLC) devices with software 4.x, 5.x, 6.0, and 7.0 before 7.0.220.0, 7.1 before 7.1.91.0, and 7.2 before 7.2.103.0 allows remote attackers to cause a denial of service (device crash) via a malformed URL in an HTTP request, aka Bug ID CSCts81997.
Vendor Status:
Cisco has released free software updates that address this vulnerability.