The Locator/ID Separation Protocol (LISP) implementation in Cisco IOS 15.3(3)S and earlier and IOS XE does not properly validate parameters in ITR control messages, which allows remote attackers to cause a denial of service (CEF outage and packet drops) via malformed messages, aka Bug ID CSCun73782.
http://www.securitytracker.com/id/1030243
http://tools.cisco.com/security/center/viewAlert.x?alertId=34233
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3262