STIGQter: STIG Summary: z/OS CL/SuperSession for ACF2 Security Technical Implementation Guide Version: 7 Release: 2 Benchmark Date: 01 Oct 2025:

CL/SuperSession must be properly configured to generate SMF records for audit trail and accounting reports.

DISA Rule

SV-224283r1141410_rule

Vulnerability Number

V-224283

Group Title

SRG-OS-000018

Rule Version

ZCLS0041

Severity

CAT II

CCI(s)

• CCI-000172 - Generate audit records for the event types defined in AU-2 c that include the audit record content defined in AU-3.
• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.
• CCI-003938 - Automatically generate audit records of the enforcement actions.

Weight

10

Fix Recommendation

Ensure the Session Manager generates SMF records for audit trail and accounting reports.

To provide an audit trail of user activity in CL/SuperSession, configure the Network Accounting Facility (NAF) to require SMF recording of accounting and audit data. Accounting to the journal dataset is optional at the discretion of the site. Ensure that the NAF parameter options for member KLKINNAF for Version 3 of CL/SuperSession or KLVINNAF for Version 2 of CL/SuperSession RLSPARM initialization parameter library are coded to the below specifications.

DSNAME= dsname - Name of the NAF journal dataset. Required only if the site is collecting accounting and audit data in the journal dataset in addition to the SMF data.

MOD - If the journal dataset is used, this parameter should be set to ensure that logging data in the dataset is not overwritten.

SMF=nnn - SMF record number. This field is mandatory to ensure that CL/SuperSession data is always written to the SMF files.

Check Contents

Version 3 of CL/SuperSession
Review the member KLKINNAF in the TLVPARM DD statement concatenation of the CL/SuperSession STC procedure to determine SMF number. (This member is located in SYS3.OMEGAMON.qualifier.RLSPARM.)

Version 2 of CL/SuperSession
Review the member KLVINNAF in the TLVPARM DD statement concatenation of the CL/SuperSession STC procedure to determine SMF number. (This member is located in SYS3.OMEGAMON.qualifier.RLSPARM.)

Refer to the following report produced by the z/OS Data Collection:

- EXAM.RPT(SMFOPTS).

Refer to the following report produced by the z/OS Data Collection:

- PDI(ZCLS0041).

If the following guidance is true, this is not a finding.

If the SMF= field specifies an SMF record number, review the SMFOPTS report to verify SMF is writing that record type.

If SMF is writing the record number specified by SMF=, this is not a finding.

Vulnerability Number

V-224283

Documentable

False

Rule Version

ZCLS0041

Severity Override Guidance

Version 3 of CL/SuperSession
Review the member KLKINNAF in the TLVPARM DD statement concatenation of the CL/SuperSession STC procedure to determine SMF number. (This member is located in SYS3.OMEGAMON.qualifier.RLSPARM.)

Version 2 of CL/SuperSession
Review the member KLVINNAF in the TLVPARM DD statement concatenation of the CL/SuperSession STC procedure to determine SMF number. (This member is located in SYS3.OMEGAMON.qualifier.RLSPARM.)

Refer to the following report produced by the z/OS Data Collection:

- EXAM.RPT(SMFOPTS).

Refer to the following report produced by the z/OS Data Collection:

- PDI(ZCLS0041).

If the following guidance is true, this is not a finding.

If the SMF= field specifies an SMF record number, review the SMFOPTS report to verify SMF is writing that record type.

If SMF is writing the record number specified by SMF=, this is not a finding.

Check Content Reference

M

Target Key

4117