The Phone Proxy component in Cisco Adaptive Security Appliance (ASA) Software 9.1(.3) and earlier allows remote attackers to bypass authentication and change trust relationships by injecting a Certificate Trust List (CTL) file, aka Bug ID CSCuj66770.
http://tools.cisco.com/security/center/viewAlert.x?alertId=32956
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0738