STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

CA-ACF2 must limit Write or greater access to SYS1.NUCLEUS to system programmers only.

DISA Rule

SV-223445r533198_rule

Vulnerability Number

V-223445

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-ES-000240

Severity

CAT I

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-001499 - The organization limits privileges to change software resident within software libraries.
CCI-002235 - The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures.

Weight

Fix Recommendation

Review access authorization to critical system files. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the changes required to protect SYS1.NUCLEUS.

Configure the update and allocate access to SYS1.NUCLEUS to be limited to system programmers only and all update and allocate access is logged.

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If all of the following are untrue, this is not a finding.

If any of the following is true, this is a finding.

The ACP data set rules for SYS1.NUCLEUS do not restrict UPDATE and/or ALTER access to only z/OS systems programming personnel.

The ACP data set rules for SYS1.NUCLEUS do not specify that all (i.e., failures and successes) UPDATE and/or ALTER access will be logged.

CA-ACF2 must limit Write or greater access to SYS1.NUCLEUS to system programmers only.

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key

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