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-223631 | SRG-OS-000480-GPOS-00227 | ACF2-US-000160 | SV-223631r991589_rule | 2025-03-11 | 9 |
| Description |
|---|
| Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections. |
| ℹ️ Check |
|---|
| Refer to the proper BPXPRMxx member in 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 NOSETUID SETUID (for Vendor-provided files) SECURITY STARTUP_PROC OMVS |