IBM z/OS system administrator must develop a process notify appropriate personnel when accounts are removed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223540	ACF2-OS-000040	SV-223540r533198_rule		Medium

Description
When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system processes themselves. Sending notification of account disabling events to the system administrator and ISSO is one method for mitigating this risk. Such a capability greatly reduces the risk that operating system accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.

Description

When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system processes themselves. Sending notification of account disabling events to the system administrator and ISSO is one method for mitigating this risk. Such a capability greatly reduces the risk that operating system accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2022-12-14

Details

Check Text ( C-25213r500755_chk )
Ask the system Administrator for the documented process to notify appropriate personnel when accounts are removed. If there is no documented process this is a finding.

Fix Text (F-25201r500756_fix)
Develop a documented process to notify appropriate personnel when accounts are removed.