IBM z/OS scheduled production batch ACIDs must specify the CA-TSS BATCH Facility, and the Batch Job Scheduler must be authorized to the Scheduled production CA-TSS batch ACID.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223961	TSS0-ES-000880	SV-223961r958730_rule		Medium

Description
In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by the organizations. Some programs and processes are required to operate at a higher privilege level and therefore should be excluded from the organization-defined software list after review.

Description

In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by the organizations. Some programs and processes are required to operate at a higher privilege level and therefore should be excluded from the organization-defined software list after review.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2024-06-24

Details

Check Text ( C-25634r516282_chk )
Refer to the documentation of the processes used for submission of batch jobs via an automated process (i.e., scheduler or other sources) and each of the associated userids. Ensure that each identified batch ACID is sourced to a specific submission process used only for batch processing. If the following guidance is true, this is not a finding. -The job scheduler is cross-authorized to the batch ACIDs. -The Facility of BATCH is specified for each batch ACID. -Batch ACIDs with facilities other than BATCH should be questioned to ensure they are truly used for batch processing only, especially if a non-expiring password is used. -The batch ACIDS may have the NOSUSPEND attribute.

Check Text ( C-25634r516282_chk )

Refer to the documentation of the processes used for submission of batch jobs via an automated process (i.e., scheduler or other sources) and each of the associated userids.

Ensure that each identified batch ACID is sourced to a specific submission process used only for batch processing.

If the following guidance is true, this is not a finding.

-The job scheduler is cross-authorized to the batch ACIDs.
-The Facility of BATCH is specified for each batch ACID.
-Batch ACIDs with facilities other than BATCH should be questioned to ensure they are truly used for batch processing only, especially if a non-expiring password is used.
-The batch ACIDS may have the NOSUSPEND attribute.

Fix Text (F-25622r516283_fix)
Ensure associated ACIDs exist for all batch jobs and documentation justifying access to system resources is maintained and filed with the ISSO. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the required changes.