Users that have access to the CONSOLE resource in the TSOAUTH resource class are not properly defined.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-7488	ACP00294	SV-7930r2_rule	DCCS-1 DCCS-2 ECCD-1 ECCD-2	Medium

Description
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.

STIG	Date
z/OS ACF2 STIG	2019-12-12

Details

Check Text ( C-19522r1_chk )
a) Refer to the following reports produced by the ACF2 Data Collection and Data Set and Resource Data Collection: - SENSITVE.RPT(TSOAUTH) - ACF2CMDS.RPT(ATTCONSL) - ACF2CMDS.RPT(OPERPARM) - SENSITVE.RPT(OPERCMDS) - ACF2CMDS.RPT(RESOURCE) – Alternate report NOTE: If CLASMAP defines TSOAUTH or OPERCMDS as anything other than the default of TYPE(TSO) or TYPE(OPR), replace TSO or OPR below with the appropriate three letters. b) If the CONSOLE resource is not defined to the TSOAUTH resource class, there is NO FINDING. 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 CONSOLE resource in the TSOAUTH resource class or users assigned the CONSOLE attribute: 1) Logonids are restricted to the INFO level on the AUTH field specified in the OPERPARM segment of the user profile record. 2) Logonids are restricted to READ access to the MVS.MCSOPER.userid resource defined in the OPERCMDS resource class (i.e., resource rules for TYPE(OPR)). d) If all of the above are true, there is NO FINDING. e) If any of the above are untrue, this is a FINDING.

Check Text ( C-19522r1_chk )

a) Refer to the following reports produced by the ACF2 Data Collection and Data Set and Resource Data Collection:

- SENSITVE.RPT(TSOAUTH)
- ACF2CMDS.RPT(ATTCONSL)
- ACF2CMDS.RPT(OPERPARM)
- SENSITVE.RPT(OPERCMDS)
- ACF2CMDS.RPT(RESOURCE) – Alternate report

NOTE: If CLASMAP defines TSOAUTH or OPERCMDS as anything other than the default of TYPE(TSO) or TYPE(OPR), replace TSO or OPR below with the appropriate three letters.

b) If the CONSOLE resource is not defined to the TSOAUTH resource class, there is NO FINDING.

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 CONSOLE resource in the TSOAUTH resource class or users assigned the CONSOLE attribute:

1) Logonids are restricted to the INFO level on the AUTH field specified in the OPERPARM segment of the user profile record.
2) Logonids are restricted to READ access to the MVS.MCSOPER.userid resource defined in the OPERCMDS resource class (i.e., resource rules for TYPE(OPR)).

d) If all of the above are true, there is NO FINDING.

e) If any of the above are untrue, this is a FINDING.

Fix Text (F-17973r1_fix)
The IAO will ensure that all users that have access to the CONSOLE resource in the TSOAUTH resource class are properly defined. Ensure the CONSOLE resource is not defined to the TSOAUTH resource class. Example: $KEY(CONSOLE) TYPE(TSO) - UID(*) PREVENT 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 CONSOLE resource in the TSOAUTH resource class or users assigned the CONSOLE attribute: Logonids are restricted to the INFO level on the AUTH field specified in the OPERPARM segment of the user profile record. Logonids are restricted to READ access to the MVS.MCSOPER.userid resource defined in the OPERCMDS resource class (i.e., resource rules for TYPE(OPR)). Example: $KEY(MVS) TYPE(OPR) MCSOPER.logonid UID(syspaudt) SERVICE(READ) ALLOW COMPILE ' ACF2.MVA.OPR(MVS)' STORE F ACF2,REBUILD(OPR)

Fix Text (F-17973r1_fix)

The IAO will ensure that all users that have access to the CONSOLE resource in the TSOAUTH resource class are properly defined.

Ensure the CONSOLE resource is not defined to the TSOAUTH resource class.

Example:

$KEY(CONSOLE) TYPE(TSO)
- UID(*) PREVENT

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 CONSOLE resource in the TSOAUTH resource class or users assigned the CONSOLE attribute:

Logonids are restricted to the INFO level on the AUTH field specified in the OPERPARM segment of the user profile record.

Logonids are restricted to READ access to the MVS.MCSOPER.userid resource defined in the OPERCMDS resource class (i.e., resource rules for TYPE(OPR)).

Example:

$KEY(MVS) TYPE(OPR)
MCSOPER.logonid UID(syspaudt) SERVICE(READ) ALLOW

COMPILE ' ACF2.MVA.OPR(MVS)' STORE

F ACF2,REBUILD(OPR)