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z/OS UNIX each group is not defined with a unique GID.


Overview

Finding ID Version Rule ID IA Controls Severity
V-6986 ZUSS0042 SV-7289r2_rule DCCS-1 DCCS-2 Medium
Description
User identifiers (ACF2 logonids, RACF userids, and Top Secret ACIDs), groups, and started tasks that use z/OS UNIX facilities are defined to an ACP with attributes including UID and GID. If these attributes are not correctly defined, data access or command privilege controls could be compromised.
STIG Date
z/OS RACF STIG 2016-01-04

Details

Check Text ( C-4644r1_chk )
Refer to the following report produced by the ACP Data Collection:

ACF2
- ACF2CMDS.RPT(OMVSGRP)
RACF
- RACFCMDS.RPT(LISTGRP)

Automated Analysis
Refer to the following report produced by the z/OS Data Collection:

- PDI(ZUSS0042)

For ACF2 and RACF ensure that each GID is unique to a specific group.

For TSS this is Not Applicable.
Fix Text (F-18961r1_fix)
The systems programmer will verify that each group has a unique GID number,