The number of CA-TSS ACIDs with MISC9 authority must be justified.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223938	TSS0-ES-000650	SV-223938r877779_rule		Medium

Description
Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.

Description

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2024-02-22

Details

Check Text ( C-25611r516213_chk )
From the ISPF Command Shell enter: TSS LIST(ACIDS) DATA(ADMIN) If the ACIDs having MISC9(ALL) or MISC9(CONSOLE) authority are designated SCAs who are responsible for the security for the domain this is not a finding.

Fix Text (F-25599r516214_fix)
Review all ACIDs with the MISC9 attribute. Evaluate the impact of removing MISC9(ALL) or MISC9(CONSOLE) access from ACIDs not required to assign the CONSOLE attribute. It is suggested that MISC9(CONSOLE) assignment privileges be limited to the MSCA. Develop a plan of action and implement the changes.