Latest (27th April 2011) Cisco Security Advisory for WLC (DoS)
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 ICMP packets.
Cisco has released free software updates that address this vulnerability. There are no available workarounds to mitigate this vulnerability.
No other Cisco products are currently known to be affected by this vulnerability.
When considering software upgrades, also consulthttp://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.
If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable.
First Fixed Release
126.96.36.199 and 188.8.131.52
There are no available workarounds to mitigate this vulnerability.
Cisco has released free software updates that address this vulnerability. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.
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