STIGQter: STIG Summary: z/OS ICSF for TSS Security Technical Implementation Guide Version: 6 Release: 6 Benchmark Date: 23 Apr 2021:

IBM Integrated Crypto Service Facility (ICSF) install data sets are not properly protected.

DISA Rule

SV-225576r472526_rule

Vulnerability Number

V-225576

Group Title

SRG-OS-000080

Rule Version

ZICST000

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

The IAO will ensure that update and allocate access to IBM Integrated Crypto Service Facility (ICSF) install data sets is limited to System Programmers only, and all update and allocate access is logged. Read access can be given to Auditors and any other users that have a valid requirement to utilize these data sets.

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 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.

Data sets to be protected will be:
SYS1.CSF

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

TSS PERMIT(syspaudt) DSN(SYS1.CSF.) ACCESS(R)
TSS PERMIT(tstcaudt) DSN(SYS1.CSF.) ACCESS(R)
TSS PERMIT(icsfusrs) DSN(SYS1.CSF.) ACCESS(R)
TSS PERMIT(syspaudt) DSN(SYS1.CSF.) ACCESS(ALL) ACTION(AUDIT)
TSS PERMIT(tstcaudt) DSN(SYS1.CSF.) ACCESS(ALL) ACTION(AUDIT)

Check Contents

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

- SENSITVE.RPT(ICSFRPT)

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

- PDI(ZICS0000)

b) Verify that access to the IBM Integrated Crypto Service Facility (ICSF) install data sets are properly restricted.

___ The TSS data set rules for the data sets does not restrict UPDATE and/or ALL access to systems programming personnel.

___ The TSS data set rules for the data sets does not specify that all (i.e., failures and successes) UPDATE and/or ALL access will be logged.

c) If all of the above are untrue, there is NO FINDING.

d) If any of the above is true, this is a FINDING.

Vulnerability Number

V-225576

Documentable

False

Rule Version

ZICST000

Severity Override Guidance

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

- SENSITVE.RPT(ICSFRPT)

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

- PDI(ZICS0000)

b) Verify that access to the IBM Integrated Crypto Service Facility (ICSF) install data sets are properly restricted.

___ The TSS data set rules for the data sets does not restrict UPDATE and/or ALL access to systems programming personnel.

___ The TSS data set rules for the data sets does not specify that all (i.e., failures and successes) UPDATE and/or ALL access will be logged.

c) If all of the above are untrue, there is NO FINDING.

d) If any of the above is true, this is a FINDING.

Check Content Reference

M

Target Key

4202

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