IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB must be properly specified.

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 DoW that reflects the most restrictive security posture consistent with operational requirements.

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

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