IBM z/OS Default profiles must not be defined in TSS OMVS UNIX security parameters for classified systems.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-224090 | SRG-OS-000480-GPOS-00227 | TSS0-US-000170 | SV-224090r991589_rule | 2025-03-11 | 9 |
| 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. |
| ℹ️ Check |
|---|
| 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 |
|---|
| Ensure that Use of the OMVS default UIDs will not be allowed on any classified system. Set Control Option UNIQUSER off. |