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The z/OS Default profiles must not be defined in the corresponding FACILITY Class Profile for classified systems.


Overview

Finding ID Version Rule ID IA Controls Severity
V-6997 ZUSSR050 SV-7300r4_rule Medium
Description
The RACF FACILITY Class BPX. UNIQUE.USER profile contains the userid or the userid/group ID of the default profiles to be used for a user without a z/OS UNIX profile (i.e., OMVS Segment). In classified system user access will not be determined by default.
STIG Date
z/OS RACF STIG 2018-04-04

Details

Check Text ( C-3865r3_chk )
If the system is not classified this is not applicable.

From a command input screen enter:

RLIST FACILITY (BPX.UNIQUE.USER) ALL
Examine APPLICATION DATA for userid

Alternately:
Refer to the following report produced by the RACF Data Collection:

- RACFCMDS.RPT(FACILITY)
- System Classification

Automated Analysis:
Refer to the following report produced by the RACF Data Collection:

- PDI(ZUSSR050)

If system is classified and a userid is are not defined in the Application Data field in the BPX.UNIQUE.USER resource in the FACILITY report, there is no finding.
Fix Text (F-6718r2_fix)
If system is classified a userid should not be defined in the application data field of the FACILITY report.

The sample commands below show the required security parameters required for the default user:


AU OEDFLTU DFLTGRP(OEDFLTG) NAME('OE DEFAULT USER') NOPASS -
OMVS(UID(99999) HOME('/u/oeflt') PROGRAM('/bin/echo')) -
DATA('DEFAULT OMVSUSERID ADDED WITH SOER5')


RDEF FACILITY BPX. UNIQUE.USER APPLDATA() -
DATA('ADDED TO SUPPORT THE DEFAULT USER') UACC(NONE) OWNER(ADMIN)

SETR RACLIST(FACILITY) REFRESH