From z/OS TSS STIG
Part of ACP00294
Associated with: CCI-000213
MCS consoles can be used to issue operator commands. Failure to properly control access to MCS consoles could result in unauthorized personnel issuing sensitive operator commands. This exposure may threaten the integrity and availability of the operating system environment, and compromise the confidentiality of customer data.
a) Refer to the following reports produced by the TSS Data Collection and Data Set and Resource Data Collection: - TSSCMDS.RPT(@PROFS) - TSSCMDS.RPT(@ACIDS) - SENSITVE.RPT(WHOHOPER) - SENSITVE.RPT(WHOHTSOA) b) If the CONSOLE privilege is not defined to the TSOAUTH resource class, there is NO FINDING (with this specific check). c) At the discretion of the IAO, users may be allowed to issue z/OS system commands from a TSO session. With this in mind, ensure the following items are in effect for users granted the TSO CONSOLE privilege: 1) User ACIDs are restricted to the INFO level in the MCSAUTH attribute. 2) User ACIDs are restricted to READ access to the MVS.MCSOPER.acid resource defined in the OPERCMDS resource class. 3) User ACIDs and/or profile ACIDs are restricted to the CONSOLE resource defined in the TSOAUTH resource class. d) If all of the above in (c) are true, there is NO FINDING. e) If any of the above in (c) are untrue, this is a FINDING.
Evaluate the impact of correcting any deficiencies. Develop a plan of action and implement the required changes. At the discretion of the IAO, users may be allowed to issue z/OS system commands from a TSO session. With this in mind, ensure the following items are in effect for users granted the TSO CONSOLE privilege: a) User ACIDs are restricted to the INFO level in the MCSAUTH attribute. b) User ACIDs are restricted to READ access to the MVS.MCSOPER.acid resource defined in the OPERCMDS resource class. c) User ACIDs and/or profile ACIDs are restricted to the CONSOLE resource defined in the TSOAUTH resource class. For Example: TSS ADDTO (userid) MCSAUTH(INFO) TSS PERMIT(userid) OPERCMDS(MVS.MCSOPER.userid) ACCESS(READ) ACTION(AUDIT) TSS PERMIT(oprprofileacid) TSOAUTH(CONSOLE) ACCESS(READ) ACTION(AUDIT)
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