STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

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

DISA Rule

SV-223957r561402_rule

Vulnerability Number

V-223957

Group Title

SRG-OS-000370-GPOS-00155

Rule Version

TSS0-ES-000840

Severity

CAT I

CCI(s)

• CCI-001774 - The organization employs a deny-all, permit-by-exception policy to allow the execution of authorized software programs on the information system.

Weight

10

Fix Recommendation

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.

Check Contents

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.

Vulnerability Number

V-223957

Documentable

False

Rule Version

TSS0-ES-000840

Severity Override Guidance

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.

Check Content Reference

M

Target Key

4102

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