Title

The IBM z/VM Privilege Class F must be restricted to service representatives only. (Cat II impact)

Discussion

Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts, performing system integrity checks, or administering cryptographic key management activities. Non-privileged users are individuals that do not possess appropriate authorizations. Circumventing intrusion detection and prevention mechanisms or malicious code protection mechanisms are examples of privileged functions that require protection from non-privileged users. Privilege Class F can obtain, and examine in detail, data about input and output devices connected to the z/VM system. This privilege class is reserved for IBM use only.

Check Content

Examine user directory definitions to determine Privilege Class. If CP Privilege Class F is assigned to anyone other than a service representative, this is a finding.

Fix Text

Configure CP Privilege Class F to service representatives only.

Additional Identifiers

Rule ID:

Vulnerability ID: IBMZ-VM-001200

Group Title:

Expert Comments

CCIs tied to check.

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