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The IBM z/OS user account for the UNIX kernel (OMVS) must be properly defined to the security database.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-223859RACF-US-000220SV-223859r958482_ruleCCI-000764medium
Description
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system.
STIGDate
IBM z/OS RACF Security Technical Implementation Guide2026-06-03

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00
IAC-04Identification & Authentication for Devices
1.00
IAC-05Identification & Authentication for Third-Party Technology Assets, Applications and/or Services (TAAS)
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (71) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00

+61 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.5.1
1.00
3.5.2
1.00
CCI1 mapping
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

Who does this work

7 NICE work roles and 5 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-223859r958482_chk)

If OMVS userid is defined to the ESM as follows, this is not a finding. No access to interactive on-line facilities (e.g., TSO, CICS, etc.) Default group specified as OMVSGRP or STCOMVS UID(0) HOME directory specified as "/" Shell program specified as "/bin/sh"

Fix Text (F-25520r868909_fix)

Define OMVS userid to the ESM as specified below: No access to interactive on-line facilities (e.g., TSO, CICS, etc.) Default group specified as OMVSGRP or STCOMVS UID(0) HOME directory specified as "/" Shell program specified as "/bin/sh"