Title

IBM z/OS IEASYMUP resource must be protected in accordance with proper security requirements. (Cat II impact)

Discussion

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.

Check Content

From the ACF Command screen enter: SET RESOURCE(FAC) LIST IEASYMUP If the accesses for IEASYMUP resources and/or generic equivalent are properly restricted, this is not a finding. The ACF2 resources are defined with a default access of PREVENT. The ACF2 resource access authorizations specify SERVICE(UPDATE) and/or greater access to only DASD administrators, Tape Library personnel, and system programming personnel. The ACF2 resource access authorizations specify logging.

Fix Text

Configure the System level symbolic resources to be defined to the FACILITY resource class and protected. UPDATE access to the System level symbolic resources are limited to System Programmers, DASD Administrators, and/or Tape Library personnel. All access is logged. Ensure the guidelines for the resources and/or generic equivalent are followed. Limit access to the IEASYMUP resources to the above personnel with LOG and SERVICE(UPDATE) and/or greater access. The following commands are provided as a sample for implementing resource controls: $KEY(IEASYMUP) TYPE(FAC) - UID(<dasd>) SERVICE(UPDATE) LOG - UID(<sysprgmr>) SERVICE(UPDATE) LOG - UID(<tape librarian>) SERVICE(UPDATE) LOG - UID(*) PREVENT SET R(FAC) COMPILE 'ACF2.FAC(IEASYMUP)' STORE F ACF2,REBUILD(FAC)

Additional Identifiers

Rule ID: SV-223457r958726_rule

Vulnerability ID: V-223457

Group Title: SRG-OS-000324-GPOS-00125

Expert Comments

CCIs tied to check.

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