IBM z/OS system administrator must develop a procedure to notify designated personnel if baseline configurations are changed in an unauthorized manner.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-224038	TSS0-OS-000420	SV-224038r561402_rule		Medium

Description
Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system configurations can have unintended side effects, some of which may be relevant to security. Detecting such changes and providing an automated response can help avoid unintended, negative consequences that could ultimately affect the security state of the operating system. The operating system's IMO/ISSO and SAs must be notified via email and/or monitoring system trap when there is an unauthorized modification of a configuration item.

Description

Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system configurations can have unintended side effects, some of which may be relevant to security. Detecting such changes and providing an automated response can help avoid unintended, negative consequences that could ultimately affect the security state of the operating system. The operating system's IMO/ISSO and SAs must be notified via email and/or monitoring system trap when there is an unauthorized modification of a configuration item.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2020-10-07

Details

Check Text ( C-25711r516513_chk )
Ask the system administrator for the procedure to notify designated personnel if baseline configurations are changed in an unauthorized manner. If there is no procedure, this is a finding.

Fix Text (F-25699r516514_fix)
Develop a procedure to notify designated personnel if baseline configurations are changed in an unauthorized manner.