IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB must be properly specified.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-224087 | SRG-OS-000480-GPOS-00227 | TSS0-US-000140 | SV-224087r991589_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 |
|---|
| Refer to the BPXPRM00 member of SYS1.PARMLIB. If the required parameter keywords and values are defined as detailed below, this is not a finding. Parameter Keyword Value SUPERUSER BPXROOT TTYGROUP TTY STEPLIBLIST /etc/steplib USERIDALIASTABLE Will not be specified. ROOT SETUID will be specified MOUNT NOSETUID SETUID (for Vendor-provided files)SECURITY STARTUP_PROC OMVS |
| ✔️ Fix |
|---|
| Define the settings in PARMLIB member BPXPRMxx for z/OS UNIX security parameters values to conform to the specifications below: Parameter Keyword Value SUPERUSER BPXROOT TTYGROUP TTY STEPLIBLIST /etc/steplib USERIDALIASTABLE Will not be specified. ROOT SETUID will be specified MOUNT NOSETUIDSETUID (for Vendor-provided files)SECURITY STARTUP_PROC OMVS |