Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) allow remote attackers to cause a denial of service (ASDM syslog outage) via a long URL, aka Bug IDs CSCsm11264 and CSCtb92911.
https://supportforums.cisco.com/thread/238724
https://supportforums.cisco.com/thread/2018112
https://exchange.xforce.ibmcloud.com/vulnerabilities/64732
http://www.securitytracker.com/id?1024963
http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.pdf