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V-223631

CAT II (Medium)

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

Rule ID

SV-223631r991589_rule

STIG

IBM z/OS ACF2 Security Technical Implementation Guide

Version

V9R8

CCIs

CCI-000366

Discussion

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.

Check Content

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 Text

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