Title

The system must be checked for extraneous device files at least weekly. (Cat III impact)

Discussion

If an unauthorized device is allowed to exist on the system, there is the possibility the system may perform unauthorized operations.

Check Content

NOTE: This will virtually always be a manual review. Check the system for an automated job, or check with the SA, to determine if the system is checked for extraneous device files on a weekly basis. If no automated or manual process is in place, this is a finding.

Fix Text

Establish a weekly automated or manual process to create a list of device files on the system and determine if any files have been added, moved, or deleted since the last list was generated. A list of device files can be generated with this command: # find / -type b -o -type c -o -type n > device-file-list

Additional Identifiers

Rule ID: SV-38504r1_rule

Vulnerability ID: V-923

Group Title: GEN002260

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.