CM-7(4) Unauthorized Software — Deny-by-exception
Control enhancement of CM-7 Least Functionality
Control
Identify [Assignment: software programs];
Employ an allow-all, deny-by-exception policy to prohibit the execution of unauthorized software programs on the system; and
Review and update the list of unauthorized software programs [Assignment: frequency].
Discussion
Unauthorized software programs can be limited to specific versions or from a specific source. The concept of prohibiting the execution of unauthorized software may also be applied to user actions, system ports and protocols, IP addresses/ranges, websites, and MAC addresses.
Related controls
Need CM-7(4) implemented and evidenced?
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