IBM z/OS ACF2 STIG Version Comparison

There are 8 differences between versions v9 r2 (Oct. 24, 2024) (the "left" version) and v9 r4 (April 2, 2025) (the "right" version).

Check ACF2-JS-000100 was added to the benchmark in the "right" version.

This check's original form is available here.

Title

IBM z/OS RJE workstations and NJE nodes must be defined to the FACILITY resource class.

Check Content

Refer to SYS1.PARMLIB (JES2PARM) For each node entry: If all JES2-defined NJE nodes and RJE workstations have a profile defined in the FACILITY resource class, this is not a finding. Notes: Nodename is the NAME parameter value specified on the NODE statement. Review the JES2 parameters for NJE node definitions by searching for NODE( in the report. Workstation is RMTnnnn, where "nnnn" is the number on the RMT statement. Review the JES2 parameters for RJE workstation definitions by searching for RMT( in the report. NJE.* and RJE.* profiles will force userid and password protection of all NJE and RJE connections respectively. This method is acceptable in lieu of using discrete profiles.

Discussion

To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-approved PKIs, all DOD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000326-GPOS-00126

Fix

Ensure associate LOGONIDs exist for all RJE/NJE sources and review the authorizations for these remote facilities. Develop a plan of action and implement the changes as required by the z/OS STIG.