STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 9 Release: 9 Benchmark Date: 01 Jul 2026:

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

DISA Rule

SV-223446r1225678_rule

Vulnerability Number

V-223446

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-ES-000250

Severity

CAT I

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.
• CCI-001499 - Limit privileges to change software resident within software libraries.
• CCI-002235 - Prevent non-privileged users from executing privileged functions.

Weight

10

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.LPALIB.

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

Check Contents

Execute a data set list of access for SYS1.LPALIB.

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

- The ACF2 data set rules for SYS1.LPALIB do not restrict WRITE and/or ALLOCATE access to only z/OS systems programming personnel.
- The ACF2 data set rules for SYS1.LPALIB do not specify that all (i.e., failures and successes) WRITE and/or ALLOCATE access will be logged.

Vulnerability Number

V-223446

Documentable

False

Rule Version

ACF2-ES-000250

Severity Override Guidance

Execute a data set list of access for SYS1.LPALIB.

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

- The ACF2 data set rules for SYS1.LPALIB do not restrict WRITE and/or ALLOCATE access to only z/OS systems programming personnel.
- The ACF2 data set rules for SYS1.LPALIB do not specify that all (i.e., failures and successes) WRITE and/or ALLOCATE access will be logged.

Check Content Reference

M

Target Key

4100