ACF2 emergency LOGONIDS with the REFRESH attribute must have the SUSPEND attribute specified.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223486	ACF2-ES-000680	SV-223486r991589_rule		Medium

Description
Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours. Depending on mission needs and conditions, account usage restrictions based on conditions and circumstances may be critical to limit access to resources and data to comply with operational or mission access control requirements. Thus, the operating system must be configured to enforce the specific conditions or circumstances under which organization-defined accounts can be used (e.g., by restricting usage to certain days of the week, time of day, or specific durations of time).

Description

Activity under unusual conditions can indicate hostile activity. For example, what is normal activity during business hours can indicate hostile activity if it occurs during off hours. Depending on mission needs and conditions, account usage restrictions based on conditions and circumstances may be critical to limit access to resources and data to comply with operational or mission access control requirements. Thus, the operating system must be configured to enforce the specific conditions or circumstances under which organization-defined accounts can be used (e.g., by restricting usage to certain days of the week, time of day, or specific durations of time).

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2024-06-24

Details

Check Text ( C-25159r500590_chk )
From the ACF Command screen enter: SET LID LIST IF(REFRESH) If the logonid is an emergency logonid and the REFRESH attribute is not in SUSPEND status, this is a finding.

Fix Text (F-25147r500591_fix)
The emergency logonids with the REFRESH attribute must be in SUSPEND status unless actually in use. Example: SET LID CHANGE logonid SUSPEND