Cisco Adaptive Security Appliances (ASA) devices with firmware 8.4 do not properly validate unspecified input related to UNC share pathnames, which allows remote authenticated users to cause a denial of service (device crash) via unknown vectors, aka Bug ID CSCuc65775.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.