IBM z/OS Default profiles must not be defined in TSS OMVS UNIX security parameters for classified systems.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-224090 | TSS0-US-000170 | SV-224090r991589_rule | CCI-000366 | medium |
| Description | ||||
| Configuring the operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictive security posture consistent with operational requirements. | ||||
| STIG | Date | |||
| IBM z/OS TSS Security Technical Implementation Guide | 2025-06-24 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · 9 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · 9 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · 9 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · 9 · disa_xccdf · related
Details
Check Text (C-224090r991589_chk)
If the system in not classified this is not applicable.
From a command line issue the following command:
TSS MODIFY STATUS
Note: One must have appropriate access to perform this command (have the site security officer to issue command).
If system is classified and UNIQUSER is off i.e., (UNIQUSER(OFF) this is not a finding.
Fix Text (F-25751r516670_fix)
Ensure that Use of the OMVS default UIDs will not be allowed on any classified system.
Set Control Option UNIQUSER off.