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

CA VTAPE installation data sets are not properly protected.

DISA Rule

SV-224632r1146373_rule

Vulnerability Number

V-224632

Group Title

SRG-OS-000080

Rule Version

ZVTAT000

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 WRITE and/or greater access to CA VTAPE installation data sets is limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to all authorized users.

The installing systems programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged. The installing systems programmer will identify if any additional groups have WRITE and/or greater 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:
SYS2.VTAPE
SYS3.VTAPE (Data sets that are not altered by product STCs; this can be more specific)

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

TSS PERMIT(<syspaudt>) DSN(SYS2.VTAPE.) ACCESS(R)
TSS PERMIT(<syspaudt>) DSN(SYS2.VTAPE.) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(<tstcaudt>) DSN(SYS2.VTAPE.) ACCESS(R)
TSS PERMIT(<tstcaudt>) DSN(SYS2.VTAPE.) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(<audtaudt>) DSN(SYS2.VTAPE.) ACCESS(R)
TSS PERMIT(authorized users) DSN(SYS2.VTAPE.) ACCESS(R)
TSS PERMIT(VTAPE STCs) DSN(SYS2.VTAPE.) ACCESS(R)
TSS PERMIT(<syspaudt>) DSN(SYS3.VTAPE.) ACCESS(R)
TSS PERMIT(<syspaudt>) DSN(SYS3.VTAPE.) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(<tstcaudt>) DSN(SYS3.VTAPE.) ACCESS(R)
TSS PERMIT(<tstcaudt>) DSN(SYS3.VTAPE.) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(<audtaudt>) DSN(SYS3.VTAPE.) ACCESS(R)
TSS PERMIT(authorized users) DSN(SYS3.VTAPE.) ACCESS(R)
TSS PERMIT(VTAPE STCs) DSN(SYS3.VTAPE.) ACCESS(R)

Check Contents

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

- SENSITVE.RPT(VTARPT).

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

- PDI(ZVTA0000).

Verify that the accesses to the CA VTAPE installation 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 restrict READ access to all authorized users.

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

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

Vulnerability Number

V-224632

Documentable

False

Rule Version

ZVTAT000

Severity Override Guidance

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

- SENSITVE.RPT(VTARPT).

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

- PDI(ZVTA0000).

Verify that the accesses to the CA VTAPE installation 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 restrict READ access to all authorized users.

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

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

Check Content Reference

M

Target Key

4178