STIGQter STIGQter: STIG Summary: z/OS CA 1 Tape Management for ACF2 STIG Version: 6 Release: 8 Benchmark Date: 25 Oct 2019: CA 1 Tape Management TMC, AUDIT and optional RDS and VPD data sets will be properly protected.

DISA Rule

SV-40070r2_rule

Vulnerability Number

V-17072

Group Title

ZB000003

Rule Version

ZCA1A003

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

The IAO will ensure that WRITE and/or greater access to CA 1 TMC, AUDIT and optional RDS and VPD data sets are limited to only systems programming personnel and tape management personnel. UPDATE access can be given to CA 1 STCs and/or batch users. READ access can be given to application support personnel, production control and scheduling personnel, operations personnel, and auditors. ALTER access will be logged.

The installing Systems Programmer will identify and document the product data sets and categorize them according to who will have update and alter access and if required that all update and allocate access is logged. He will identify if any additional groups have update and/or alter access for specific data sets, and once documented he will work with the IAO to see that they are properly restricted to the ACP (Access Control Program) active on the system.

(Note: The data sets and/or data set prefixes identified below are examples of a possible installation. The actual data sets and/or prefixes are determined when the product is actually installed on a system through the product’s installation guide and can be site specific.)

Due to the unique file structure of the TMC and Audit data sets, CA 1 uses the YSVC programs to handle all direct I/O activity. Because standard OPEN/CLOSE macros are not used, typical data set security checks are not performed. Even if a user does not have read authority to these data sets, the YSVC programs can enable that user to read and update records within these files. Therefore, control READ access to the TMC and Audit data sets by the YSVCUNCD and YSVCCOND resource names. Typical users should be restricted to conditional READ access.

Restrict CA 1 batch production jobs, and CA 1 started tasks to the following access authority: Unconditional READ and UPDATE access to the TMC, Audit, Retention, and Vault Pattern Description data sets. NOTE: READ and UPDATE access to the TMC and Audit data sets are controlled by the YSVCUNCD and YSVCCOND resource names, and by standard ACP data set controls, because some CA 1 utilities use conventional OPEN/CLOSE methods.

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

SET RULE
$KEY(S3C)
$PREFIX(SYS3)
CA1.AUDIT UID(<audtaudt>) R(A) E(A)
CA1.AUDIT UID(<operaudt>) R(A) E(A)
CA1.AUDIT UID(<pcspaudt>) R(A) E(A)
CA1.AUDIT UID(CA1 STCs) R(A) W(A) E(A)
CA1.AUDIT UID(<syspaudt>) R(A) W(A) A(L) E(A)
CA1.AUDIT UID(<tapeaudt>) R(A) W(A) A(L) E(A)
CA1.AUDIT UID(<tstcaudt>) R(A) W(A) A(L) E(A)
CA1.RDS UID(<syspaudt>) R(A) W(A) A(L) E(A)
CA1.RDS UID(<tapeaudt>) R(A) W(A) A(L) E(A)
CA1.RDS UID(<tstcaudt>) R(A) W(A) A(L) E(A)
CA1.TMC UID(<appsaudt>) R(A) E(A)
CA1.TMC UID(<audtaudt>) R(A) E(A)
CA1.TMC UID(<operaudt>) R(A) E(A)
CA1.TMC UID(<pcspaudt>) R(A) E(A)
CA1.TMC UID(CA1 STCs) R(A) W(A) E(A)
CA1.TMC UID(<syspaudt>) R(A) W(A) A(L) E(A)
CA1.TMC UID(<tapeaudt>) R(A) W(A) A(L) E(A)
CA1.TMC UID(<tstcaudt>) R(A) W(A) A(L) E(A)
CA1.VPD UID(<syspaudt>) R(A) W(A) A(L) E(A)
CA1.VPD UID(<tapeaudt>) R(A) W(A) A(L) E(A)
CA1.VPD UID(<tstcaudt>) R(A) W(A) A(L) E(A)

Check Contents

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

- SENSITVE.RPT(CA1RPT)

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

- PDI(ZCA10003)

Ensure that all CA 1 Tape Management TMC, AUDIT and optional RDS and VPD data sets are properly protected. If the following guidance is true, this is not a finding.

___ The ACF2 data set access authorizations restricts READ access to application support personnel, production control and scheduling personnel, operations personnel, and auditors.

___ The ACF2 data set access authorizations restricts WRITE and/or greater access to only systems programming personnel and tape management personnel.

___ The ACF2 data set access authorizations restricts UPDATE access is limited to CA 1 batch production jobs, and CA 1 started tasks.

___ The ACF2 data set access authorizations specify that all (i.e., failures and successes) ALTER access are logged.

Vulnerability Number

V-17072

Documentable

False

Rule Version

ZCA1A003

Severity Override Guidance

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

- SENSITVE.RPT(CA1RPT)

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

- PDI(ZCA10003)

Ensure that all CA 1 Tape Management TMC, AUDIT and optional RDS and VPD data sets are properly protected. If the following guidance is true, this is not a finding.

___ The ACF2 data set access authorizations restricts READ access to application support personnel, production control and scheduling personnel, operations personnel, and auditors.

___ The ACF2 data set access authorizations restricts WRITE and/or greater access to only systems programming personnel and tape management personnel.

___ The ACF2 data set access authorizations restricts UPDATE access is limited to CA 1 batch production jobs, and CA 1 started tasks.

___ The ACF2 data set access authorizations specify that all (i.e., failures and successes) ALTER access are logged.

Check Content Reference

M

Responsibility

Systems Programmer

Target Key

2189

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