ColdFusion must only allow approved file extensions.

Application servers provide a myriad of differing processes, features, and functionalities. Some of these processes may be deemed to be unnecessary or too unsecure to run on a production DoD system. One area of concern is the file types that can be included in cfm and cfml files by programmers. To control what types of technologies are used in the development of hosted applications, a default whitelist can be created and approved by the ISSO. This list includes only those file extensions that are used by the hosted applications. By default, cfm and cfml are included and do not have to be specified. The list must not contain the wildcard string "*.*".