Race condition in the TLS implementation in MainApp in the management interface in Cisco Intrusion Prevention System (IPS) Software before 7.3(3)E4 allows remote attackers to cause a denial of service (process hang) by establishing many HTTPS sessions, aka Bug ID CSCuq40652.
http://www.securitytracker.com/id/1031908
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150311-ips