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

ACF2 Classes required to properly security the z/OS UNIX environment must be ACTIVE.

DISA Rule

SV-223436r1225668_rule

Vulnerability Number

V-223436

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-ES-000150

Severity

CAT II

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

Define the CLASMAP DEFINITIONS to include entries for the FACILITY, SURROGAT, and UNIXPRIV resource classes.

NOTE: TYPE CODES values should be unique for each resource. The default TYPE CODE values should be FAC, SUR, and UNI.

Example:
TSO ACF
SHOW CLASMAP

ACF
SET CONTROL(GSO)
INSERT CLASMAP.FACILITY RESOURCE(FACILITY) RSRCTYPE(FAC) ENTITYTLN (39)

Check Contents

From the ISPF Command Shell enter:
ACF
SET CONTROL(GSO)
SHOW CLASMAP

If the CLASMAP DEFINITIONS list does not include entries for the FACILITY, SURROGAT, and UNIXPRIV resource classes, this is a finding.

NOTE: TYPE CODES values should be unique for each resource. The default TYPE CODE values should be FAC, SUR, and UNI.

Vulnerability Number

V-223436

Documentable

False

Rule Version

ACF2-ES-000150

Severity Override Guidance

From the ISPF Command Shell enter:
ACF
SET CONTROL(GSO)
SHOW CLASMAP

If the CLASMAP DEFINITIONS list does not include entries for the FACILITY, SURROGAT, and UNIXPRIV resource classes, this is a finding.

NOTE: TYPE CODES values should be unique for each resource. The default TYPE CODE values should be FAC, SUR, and UNI.

Check Content Reference

M

Target Key

4100