V-223488
SV-223488r991589_rule
CAT III
ACF2 APPLDEF GSO record if used must have supporting documentation indicating the reason it was used.
From: IBM z/OS ACF2 Security Technical Implementation Guide (V9R8)
Description
<VulnDiscussion>Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It also permits outbound connections that may facilitate exfiltration of DoD data.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
Check Procedure
From the ACF Command screen enter:
SET CONTROL(GSO)
LIST LIKE(APPLDEF-)
If the GSO APPLDEF record does not exist, this is not a finding.
If the GSO APPLDEF record does exist and no supporting documentation is available, this is a finding.
Fix Text
For any APPLDEF GSO record used, it must have supporting documentation indicating the reason it was used.
The APPLDEF record is optional.
CCI Reference
CCI-000366,CCI-000368- Created
- 2026-04-07 20:08:19
- Last Updated
- 2026-04-07 20:08:19