STIGQter: STIG Summary: z/OS HCD for TSS Security Technical Implementation Guide Version: 7 Release: 2 Benchmark Date: 01 Oct 2025:

IBM Hardware Configuration Definition (HCD) resources are not properly defined and protected.

DISA Rule

SV-224728r1146001_rule

Vulnerability Number

V-224728

Group Title

SRG-OS-000018

Rule Version

ZHCDT020

Severity

CAT II

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.
• CCI-002234 - Log the execution of privileged functions.

Weight

10

Fix Recommendation

The systems programmer will work with the ISSO to verify that the following are properly specified in the Access Control Program (ACP).

The TSS owner is defined for the CBD resources and/or IBMFAC RDT entry has DEFPROT specified.

For example:

TSS ADD(dept-acid)IBMFAC(CBD.)

TSS REP(RDT)RESCLASS(IBMFAC)ATTR(DEFPROT)

There are no TSS rules that allow access to the CBD resource.

The RACF rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming and operations personnel as well as possibly any automated operations batch users with access of READ.

The RACF rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming with access of UPDATE and logged.

Example:

TSS PERMIT(syspaudt)IBMFAC(CBD.CPC.IOCDS)ACCESS(READ)
TSS PERMIT(operaudt)IBMFAC(CBD.CPC.IOCDS)ACCESS(READ)
TSS PERMIT(autoaudt)IBMFAC(CBD.CPC.IOCDS)ACCESS(READ)
TSS PERMIT(syspaudt)IBMFAC(CBD.CPC.IOCDS) -
ACCESS(UPDATE)ACTION(AUDIT)
TSS PERMIT(syspaudt)IBMFAC(CBD.CPC.IPLPARM)ACCESS(READ)
TSS PERMIT(operaudt)IBMFAC(CBD.CPC.IPLPARM)ACCESS(READ)
TSS PERMIT(autoaudt)IBMFAC(CBD.CPC.IPLPARM)ACCESS(READ)
TSS PERMIT(syspaudt)IBMFAC(CBD.CPC.IPLPARM) -
ACCESS(UPDATE)ACTION(AUDIT)

Check Contents

Refer to the following reports produced by the Data Set and Resource Data Collection:

- TSSCMDS.RPT(WHOOIBMF).
- SENSITVE.RPT(WHOHIBMF).

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZHCD0020).

Review the following items for the IBM Hardware Configuration Definition (HCD) resources in the IBMFAC resource class. If the following guidance is true, this is not a finding.

The TSS owner is defined for the CBD resource and/or IBMFAC RDT entry has DEFPROT specified.
There is no TSS rules that allow access to the CBD resource.
The TSS rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming and operations personnel as well as possibly any automated operations batch users with access of READ.
The TSS rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming with access of UPDATE and logged.

Vulnerability Number

V-224728

Documentable

False

Rule Version

ZHCDT020

Severity Override Guidance

Refer to the following reports produced by the Data Set and Resource Data Collection:

- TSSCMDS.RPT(WHOOIBMF).
- SENSITVE.RPT(WHOHIBMF).

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZHCD0020).

Review the following items for the IBM Hardware Configuration Definition (HCD) resources in the IBMFAC resource class. If the following guidance is true, this is not a finding.

The TSS owner is defined for the CBD resource and/or IBMFAC RDT entry has DEFPROT specified.
There is no TSS rules that allow access to the CBD resource.
The TSS rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming and operations personnel as well as possibly any automated operations batch users with access of READ.
The TSS rules for the CBD.CPC.IOCDS and CBD.CPC.IPLPARM resources are restricted access to systems programming with access of UPDATE and logged.

Check Content Reference

M

Target Key

4194