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The CA-TSS Facility Control Option must specify the sub option of MODE=FAIL.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-223957TSS0-ES-000840SV-223957r958808_ruleCCI-001774high
Description
Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. The organization must identify authorized software programs and permit execution of authorized software. The process used to identify software programs that are authorized to execute on organizational information systems is commonly referred to as whitelisting. Verification of white-listed software occurs prior to execution or at system startup. This requirement applies to operating system programs, functions, and services designed to manage system processes and configurations (e.g., group policies).
STIGDate
IBM z/OS TSS Security Technical Implementation Guide2026-06-15

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (7) 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.

CFG-01Configuration Management Program
1.00
CFG-02Secure Baseline Configurations
1.00
CFG-03Least Functionality
1.00
CFG-03.2Prevent Unauthorized Software Execution
1.00
CFG-03.3Explicitly Allow / Deny Applications
1.00
CFG-05User-Installed Software
1.00
END-03Prohibit Installation Without Privileged Status
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (15) 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-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AC-6(8)Privilege Levels for Code Execution
1.00
CM-11(2)Software Installation with Privileged Status
1.00
CM-14Signed Components
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00
CM-5(3)Signed Components
1.00
CM-5(6)Limit Library Privileges
1.00
CM-7Least Functionality
1.00

+5 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) 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.

3.4.8
1.00
CCI1 mapping
CCI-001774
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) 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.

PR.PS-05
1.00

Who does this work

8 NICE work roles and 8 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-223957r958808_chk)

From the ISPF Command Shell enter: TSS MODIFY(FACILITY(ALL)) If the Facility Control Option does not specifies the sub option of "MODE=FAIL" for all facilities, this is a finding.

Fix Text (F-25618r516271_fix)

Evaluate the impact associated with implementation of the Facility Control Option MODE sub-option. Develop a plan of action to implement the Facility Control Option MODE sub-option setting to "MODE=FAIL" and proceed with the change.