IBM z/OS system administrator must develop a procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies in the operation of any security functions are discovered.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223582	ACF2-OS-002430	SV-223582r958948_rule		Medium

Description
If anomalies are not acted upon, security functions may fail to secure the system. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include messages to local computer consoles, and/or hardware indications, such as lights. This capability must take into account operational requirements for availability for selecting an appropriate response. The organization may choose to shut down or restart the information system upon security function anomaly detection.

Description

If anomalies are not acted upon, security functions may fail to secure the system. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include messages to local computer consoles, and/or hardware indications, such as lights. This capability must take into account operational requirements for availability for selecting an appropriate response. The organization may choose to shut down or restart the information system upon security function anomaly detection.

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

Details

Check Text ( C-25255r500881_chk )
Ask the system administrator for the procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies occur. If a procedure does not exist, this is a finding. If the procedure does not properly shut down the information system, restart the information system, and/or notify the system administrator when anomalies occur, this is a finding.

Check Text ( C-25255r500881_chk )

Ask the system administrator for the procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies occur.

If a procedure does not exist, this is a finding.

If the procedure does not properly shut down the information system, restart the information system, and/or notify the system administrator when anomalies occur, this is a finding.

Fix Text (F-25243r500882_fix)
Develop a procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies occur.