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) install data sets are not properly protected.

DISA Rule

SV-224726r1146337_rule

Vulnerability Number

V-224726

Group Title

SRG-OS-000080

Rule Version

ZHCDT000

Severity

CAT II

CCI(s)

• CCI-001499 - Limit privileges to change software resident within software libraries.
• CCI-002234 - Log the execution of privileged functions.

Weight

10

Fix Recommendation

The ISSO will ensure that update and ALL access to IBM HCD install data sets is limited to systems programmers only, and all update and ALL access is logged. Auditors, automated operations, and operators should have READ access.

The installing systems programmer will identify and document the product data sets and categorize them according to who will have update and ALL access and if required that all update and ALL access is logged. The installing systems programmer will identify if any additional groups have update and/or ALL access for specific data sets, and once documented will work with the ISSO to ensure they are properly restricted to the Access Control Program (ACP) active on the system.

Data sets to be protected will be:
SYS1.SCBD*

The following commands are provided as a sample for implementing data set controls:

TSS PERMIT(audtaudt) DSN(SYS1.SCBD) ACCESS(R)
TSS PERMIT(autoaudt) DSN(SYS1.SCBD) ACCESS(R)
TSS PERMIT(operaudt) DSN(SYS1.SCBD) ACCESS(R)
TSS PERMIT(syspaudt) DSN(SYS1.SCBD) ACCESS(R)
TSS PERMIT(tstcaudt) DSN(SYS1.SCBD) ACCESS(R)
TSS PERMIT(syspaudt) DSN(SYS1.SCBD) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(tstcpaudt) DSN(SYS1.SCBD) ACCESS(ALL) ACTION(AUDIT)

Check Contents

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

- SENSITVE.RPT(HCDRPT).

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

- PDI(ZHCD0000).

Verify that access to the IBM Hardware Configuration Definition (HCD) install data sets are properly restricted. If the following guidance is true, this is not a finding.

The TSS data set rules for the data sets restricts READ access to auditors, automated operations, operators, and systems programming personnel.

The TSS data set rules for the data sets restricts WRITE and/or greater access to systems programming personnel.

The TSS data set rules for the data sets specifies that all (i.e., failures and successes) WRITE and/or greater access are logged.

Vulnerability Number

V-224726

Documentable

False

Rule Version

ZHCDT000

Severity Override Guidance

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

- SENSITVE.RPT(HCDRPT).

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

- PDI(ZHCD0000).

Verify that access to the IBM Hardware Configuration Definition (HCD) install data sets are properly restricted. If the following guidance is true, this is not a finding.

The TSS data set rules for the data sets restricts READ access to auditors, automated operations, operators, and systems programming personnel.

The TSS data set rules for the data sets restricts WRITE and/or greater access to systems programming personnel.

The TSS data set rules for the data sets specifies that all (i.e., failures and successes) WRITE and/or greater access are logged.

Check Content Reference

M

Target Key

4194