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.SVCLIB to system programmers only.

DISA Rule

SV-223453r1225685_rule

Vulnerability Number

V-223453

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-ES-000320

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

Fix Recommendation

Configure update and allocate access to SYS1.SVCLIB to be limited to system programmers only and all Update and Allocate access is logged and reviewed. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the changes for SYS1.SVCLIB. SYS1.SVCLIB contains SVCs and I/O appendages as such: they are very powerful and will be strictly controlled to avoid compromising system integrity.

Check Contents

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

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

If any of the following are untrue, this is a finding.

ACF2 data set rules for SYS1.SVCLIB restrict WRITE and/or ALLOCATE access to only z/OS systems programming personnel.

ACF2 data set rules for SYS1.SVCLIB specify that all (i.e., failures and successes) WRITE and/or ALLOCATE access will be logged.

CA-ACF2 must limit Write or greater access to SYS1.SVCLIB 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