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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-224090r877928_rule | 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 | 2023-09-19 |
Details
| Check Text ( C-25763r516669_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. |