Cisco Security Advisory – A denial of service (DoS) vulnerability exists in the Cisco Physical Access Gateway. There are no workarounds available to mitigate the vulnerability. This vulnerability has been corrected in Cisco Physical Access Gateway software version 1.1. Cisco has released free software updates that address this vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78641/cisco-sa-20090624-gateway.txt
Source: https://packetstormsecurity.com/files/78641/Cisco-Security-Advisory-20090624-gateway.html