CVE-2013-1194
The ISAKMP implementation on Cisco Adaptive Security Appliances (ASA) devices generates different responses for IKE aggressive-mode messages depending on whether invalid VPN groups are specified, which allows remote attackers to enumerate groups via a series of messages, aka Bug ID CSCue73708.
Date published : 2013-04-18
http://archives.neohapsis.com/archives/bugtraq/2013-04/0198.html
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1194