DFSMS resources must be protected in accordance with the proper security requirements.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-31	ZSMS0010	SV-31r5_rule		Medium

Description
DFSMS provides data, storage, program, and device management functions for the operating system. Some DFSMS storage administration functions allow a user to obtain a privileged status and effectively bypass all ACP data set and volume controls. Failure to properly protect DFSMS resources may result in unauthorized access. This exposure could compromise the availability and integrity of the operating system environment, system services, and customer data.

Description

DFSMS provides data, storage, program, and device management functions for the operating system. Some DFSMS storage administration functions allow a user to obtain a privileged status and effectively bypass all ACP data set and volume controls. Failure to properly protect DFSMS resources may result in unauthorized access. This exposure could compromise the availability and integrity of the operating system environment, system services, and customer data.

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

Details

Check Text ( C-23253r5_chk )
Refer to the following report produced by the ACF2 Data Collection and Data Set and Resource Data Collection: - SENSITVE.RPT(ZSMS0010) - ACF2CMDS.RPT(RESOURCE) – Alternate report Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZSMS0010) Ensure that all SMS resources and/or generic equivalent are properly protected according to the requirements specified. If the following guidance is true, this is not a finding. ___ The resource rule for FACILITY (FAC) $KEY(STGADMIN) has a default access of PREVENT. ___ STGADMIN.DPDSRN.olddsname is restricted to System Programmers and all access is logged. ___ The STGADMIN.IGD.ACTIVATE.CONFIGURATION is restricted to System Programmers and all access is logged. ___ The STGADMIN.IGG.DEFDEL.UALIAS is restricted to Centralized and Decentralized Security personnel and System Programmers and all access is logged. ___ To avoid authorization failures once a base cluster is accessed via a PATH or AIX by a user or application that has authority to the PATH and AIX, but not the base cluster, APAR OA50118 must be applied. The resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE is defined with access of PREVENT The resource STGADMIN.IGG.CATALOG.SECURITY.BOTH is defined with access of READ Note: the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE can be defined with read access for migration purposes. If it is, a detailed migration plan must be documented and filed by the ISSM that determines a definite migration period. All access must be logged. At the completion of migration this resource must be configured with access = PREVENT. If the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE and STGADMIN.IGG.CATALOG.SECURITY.BOTH are both defined, STGADMIN.IGG.CATALOG.SECURITY.BOTH takes precedence. ___ The following resources and prefixes may be available to the end-user. STGADMIN.ADR.COPY.CNCURRNT STGADMIN.ADR.COPY.FLASHCPY STGADMIN.ADR.COPY.TOLERATE.ENQF STGADMIN.ADR.DUMP.CNCURRNT STGADMIN.ADR.DUMP.TOLERATE.ENQF STGADMIN.ADR.RESTORE.TOLERATE.ENQF STGADMIN.ARC.ENDUSER. STGADMIN.IGG.ALTER.SMS ___ The following resource is restricted to Application Production Support Team members, Automated Operations, DASD managers, and System programmers. STGADMIN.IDC.DCOLLECT ___ The following resources are restricted to Application Production Support Team members, DASD managers, and System programmers. STGADMIN.ARC.CANCEL STGADMIN.ARC.LIST STGADMIN.ARC.QUERY STGADMIN.ARC.REPORT STGADMIN.DMO.CONFIG STGADMIN.IFG.READVTOC STGADMIN.IGG.DELGDG.FORCE ___ The following resource prefixes, at a minimum, are restricted to DASD managers and System programmers. STGADMIN.ADR STGADMIN.ANT STGADMIN.ARC STGADMIN.DMO STGADMIN.ICK STGADMIN.IDC STGADMIN.IFG STGADMIN.IGG STGADMIN.IGWSHCDS ___ The following Storage Administrator functions prefix is restricted to DASD managers and System programmers and all access is logged. STGADMIN.ADR.STGADMIN.

Check Text ( C-23253r5_chk )

Refer to the following report produced by the ACF2 Data Collection and Data Set and Resource Data Collection:

- SENSITVE.RPT(ZSMS0010)
- ACF2CMDS.RPT(RESOURCE) – Alternate report

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZSMS0010)

Ensure that all SMS resources and/or generic equivalent are properly protected according to the requirements specified. If the following guidance is true, this is not a finding.

___ The resource rule for FACILITY (FAC) $KEY(STGADMIN) has a default access of PREVENT.

___ STGADMIN.DPDSRN.olddsname is restricted to System Programmers and all access is logged.

___ The STGADMIN.IGD.ACTIVATE.CONFIGURATION is restricted to System Programmers and all access is logged.

___ The STGADMIN.IGG.DEFDEL.UALIAS is restricted to Centralized and Decentralized Security personnel and System Programmers and all access is logged.

___
To avoid authorization failures once a base cluster is accessed via a PATH or AIX by a user or application that has authority to the PATH and AIX, but not the base cluster, APAR OA50118 must be applied.

The resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE is defined with access of PREVENT
The resource STGADMIN.IGG.CATALOG.SECURITY.BOTH is defined with access of READ

Note: the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE can be defined with read access for migration purposes. If it is, a detailed migration plan must be documented and filed by the ISSM that determines a definite migration period. All access must be logged. At the completion of migration this resource must be configured with access = PREVENT.
If the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE and STGADMIN.IGG.CATALOG.SECURITY.BOTH are both defined, STGADMIN.IGG.CATALOG.SECURITY.BOTH takes precedence.

___ The following resources and prefixes may be available to the end-user.

STGADMIN.ADR.COPY.CNCURRNT
STGADMIN.ADR.COPY.FLASHCPY
STGADMIN.ADR.COPY.TOLERATE.ENQF
STGADMIN.ADR.DUMP.CNCURRNT
STGADMIN.ADR.DUMP.TOLERATE.ENQF
STGADMIN.ADR.RESTORE.TOLERATE.ENQF
STGADMIN.ARC.ENDUSER.
STGADMIN.IGG.ALTER.SMS

___ The following resource is restricted to Application Production Support Team members, Automated Operations, DASD managers, and System programmers.

STGADMIN.IDC.DCOLLECT

___ The following resources are restricted to Application Production Support Team members, DASD managers, and System programmers.

STGADMIN.ARC.CANCEL
STGADMIN.ARC.LIST
STGADMIN.ARC.QUERY
STGADMIN.ARC.REPORT
STGADMIN.DMO.CONFIG
STGADMIN.IFG.READVTOC
STGADMIN.IGG.DELGDG.FORCE

___ The following resource prefixes, at a minimum, are restricted to DASD managers and System programmers.

STGADMIN.ADR
STGADMIN.ANT
STGADMIN.ARC
STGADMIN.DMO
STGADMIN.ICK
STGADMIN.IDC
STGADMIN.IFG
STGADMIN.IGG
STGADMIN.IGWSHCDS

___ The following Storage Administrator functions prefix is restricted to DASD managers and System programmers and all access is logged.

STGADMIN.ADR.STGADMIN.

Fix Text (F-19903r2_fix)
Ensure that the following are properly specified in the ACP. (Note: The resource type, resources, and/or resource prefixes identified below are examples of a possible installation. The actual resource type, resources, and/or resource prefixes are determined when the product is actually installed on a system through the product’s installation guide and can be site specific.) Below is listed the access requirements for SMS Resources. Ensure the guidelines for the resource type, resources, and/or generic equivalent are followed. The ACF2 resources are defined with a default access of PREVENT. Ensure that the following items are in effect: Ensure that no access is given to the high-level STGADMIN resource. Example: $KEY(STGADMIN) TYPE(FAC) - UID() PREVENT To avoid authorization failures once a base cluster is accessed via a PATH or AIX by a user or application that has authority to the PATH and AIX, but not the base cluster, APAR OA50118 must be applied. Configure resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE with no access . Example: $KEY(STGADMIN) TYPE(FAC) IGG.STGADMIN.IGG.CATALOG.SECURITY.CHANGE-UID() PREVENT Configure resource IGG.STGADMIN.IGG.CATALOG.SECURITY.BOTH with READ access for all. $KEY(STGADMIN) TYPE(FAC) IGG.STGADMIN.IGG.CATALOG.SECURITY.BOTH-UID() READ Note: the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE can be defined with read access for migration purposes. If it is a detailed migration plan must be documented and filed with the ISSM that determines a definite migration period. All access must be logged. At the completion of migration this resource must be configured with access = PREVENT If the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE and STGADMIN.IGG.CATALOG.SECURITY.BOTH are both defined, STGADMIN.IGG.CATALOG.SECURITY.BOTH takes precedence. The STGADMIN.DPDSRN.olddsname is restricted to System Programmers and all access is logged. Example: $KEY(STGADMIN) TYPE(FAC) DPDSRN.- UID(syspaudt) SERVICE(READ) LOG DPDSRN.- UID() PREVENT The STGADMIN.IGD.ACTIVATE.CONFIGURATION is restricted to System Programmers and all access is logged. Example: $KEY(STGADMIN) TYPE(FAC) IGD.ACTIVATE.CONFIGURATION UID(syspaudt) SERVICE(READ) LOG IGD.ACTIVATE.CONFIGURATION UID() PREVENT The STGADMIN.IGG.DEFDEL.UALIAS is restricted to System Programmers and Security personnel and all access is logged. Example: $KEY(STGADMIN) TYPE(FAC) IGG.DEFDEL.UALIAS UID(secaaudt) SERVICE(READ) LOG IGG.DEFDEL.UALIAS UID(secdaudt) SERVICE(READ) LOG IGG.DEFDEL.UALIAS UID(syspaudt) SERVICE(READ) LOG IGG.DEFDEL.UALIAS UID() PREVENT The following resources and prefixes may be available to the end-user. STGADMIN.ADR.COPY.CNCURRNT STGADMIN.ADR.COPY.FLASHCPY STGADMIN.ADR.COPY.TOLERATE.ENQF STGADMIN.ADR.DUMP.CNCURRNT STGADMIN.ADR.DUMP.TOLERATE.ENQF STGADMIN.ADR.RESTORE.TOLERATE.ENQF STGADMIN.ARC.ENDUSER. STGADMIN.IGG.ALTER.SMS Example: $KEY(STGADMIN) TYPE(FAC) ADR.COPY.CNCURRNT.- UID(endusers) SERVICE(READ) The following resource is restricted to Application Production Support Team members, Automated Operations, DASD managers, and System programmers. STGADMIN.IDC.DCOLLECT Example: $KEY(STGADMIN) TYPE(FAC) IDC.DCOLLECT.- UID(appsaudt) SERVICE(READ) IDC.DCOLLECT.- UID(autoaudt) SERVICE(READ) IDC.DCOLLECT.- UID(dasbaudt) SERVICE(READ) IDC.DCOLLECT.- UID(dasdaudt) SERVICE(READ) IDC.DCOLLECT.- UID(syspaudt) SERVICE(READ) IDC.DCOLLECT.- UID() PREVENT The following resources are restricted to Application Production Support Team members, DASD managers, and System programmers. STGADMIN.ARC.CANCEL STGADMIN.ARC.LIST STGADMIN.ARC.QUERY STGADMIN.ARC.REPORT STGADMIN.DMO.CONFIG STGADMIN.IFG.READVTOC STGADMIN.IGG.DELGDG.FORCE Example: $KEY(STGADMIN) TYPE(FAC) ARC.CANCEL.- UID(appsaudt) SERVICE(READ) ARC.CANCEL.- UID(dasbaudt) SERVICE(READ) ARC.CANCEL.- UID(dasdaudt) SERVICE(READ) ARC.CANCEL.- UID(syspaudt) SERVICE(READ) ARC.CANCEL.- UID() PREVENT The following resource prefixes, at a minimum, are restricted to DASD managers and System programmers. STGADMIN.ADR STGADMIN.ANT STGADMIN.ARC STGADMIN.DMO STGADMIN.ICK STGADMIN.IDC STGADMIN.IFG STGADMIN.IGG STGADMIN.IGWSHCDS Example: $KEY(STGADMIN) TYPE(FAC) ADR. - UID(dasbaudt) SERVICE(READ) ADR.- UID(dasdaudt) SERVICE(READ) ADR.- UID(syspaudt) SERVICE(READ) ADR.- UID() PREVENT The following Storage Administrator functions prefix is restricted to DASD managers and System programmers and all access is logged. STGADMIN.ADR.STGADMIN. Example: $KEY(STGADMIN) TYPE(FAC) ADR.STGADMIN.- UID(dasbaudt) SERVICE(READ) LOG ADR.STGADMIN.- UID(dasdaudt) SERVICE(READ) LOG ADR.STGADMIN.- UID(syspaudt) SERVICE(READ) LOG ADR.STGADMIN.- UID() PREVENT

Fix Text (F-19903r2_fix)

Ensure that the following are properly specified in the ACP.

(Note: The resource type, resources, and/or resource prefixes identified below are examples of a possible installation. The actual resource type, resources, and/or resource prefixes are determined when the product is actually installed on a system through the product’s installation guide and can be site specific.)

Below is listed the access requirements for SMS Resources. Ensure the guidelines for the resource type, resources, and/or generic equivalent are followed.

The ACF2 resources are defined with a default access of PREVENT.

Ensure that the following items are in effect:

Ensure that no access is given to the high-level STGADMIN resource.

Example:

$KEY(STGADMIN) TYPE(FAC)
- UID(*) PREVENT
To avoid authorization failures once a base cluster is accessed via a PATH or AIX by a user or application that has authority to the PATH and AIX, but not the base cluster, APAR OA50118 must be applied.

Configure resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE with no access .
Example:

$KEY(STGADMIN) TYPE(FAC)
IGG.STGADMIN.IGG.CATALOG.SECURITY.CHANGE-UID(*) PREVENT
Configure resource IGG.STGADMIN.IGG.CATALOG.SECURITY.BOTH with READ access for all.
$KEY(STGADMIN) TYPE(FAC)
IGG.STGADMIN.IGG.CATALOG.SECURITY.BOTH-UID(*) READ
Note: the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE can be defined with read access for migration purposes. If it is a detailed migration plan must be documented and filed with the ISSM that determines a definite migration period. All access must be logged. At the completion of migration this resource must be configured with access = PREVENT
If the resource STGADMIN.IGG.CATALOG.SECURITY.CHANGE and STGADMIN.IGG.CATALOG.SECURITY.BOTH are both defined, STGADMIN.IGG.CATALOG.SECURITY.BOTH takes precedence.

The STGADMIN.DPDSRN.olddsname is restricted to System Programmers and all access is logged.

Example:

$KEY(STGADMIN) TYPE(FAC)
DPDSRN.- UID(syspaudt) SERVICE(READ) LOG
DPDSRN.- UID(*) PREVENT

The STGADMIN.IGD.ACTIVATE.CONFIGURATION is restricted to System Programmers and all access is logged.

Example:

$KEY(STGADMIN) TYPE(FAC)
IGD.ACTIVATE.CONFIGURATION UID(syspaudt) SERVICE(READ) LOG
IGD.ACTIVATE.CONFIGURATION UID(*) PREVENT

The STGADMIN.IGG.DEFDEL.UALIAS is restricted to System Programmers and Security personnel and all access is logged.

Example:

$KEY(STGADMIN) TYPE(FAC)
IGG.DEFDEL.UALIAS UID(secaaudt) SERVICE(READ) LOG
IGG.DEFDEL.UALIAS UID(secdaudt) SERVICE(READ) LOG
IGG.DEFDEL.UALIAS UID(syspaudt) SERVICE(READ) LOG
IGG.DEFDEL.UALIAS UID(*) PREVENT

The following resources and prefixes may be available to the end-user.

STGADMIN.ADR.COPY.CNCURRNT
STGADMIN.ADR.COPY.FLASHCPY
STGADMIN.ADR.COPY.TOLERATE.ENQF
STGADMIN.ADR.DUMP.CNCURRNT
STGADMIN.ADR.DUMP.TOLERATE.ENQF
STGADMIN.ADR.RESTORE.TOLERATE.ENQF
STGADMIN.ARC.ENDUSER.
STGADMIN.IGG.ALTER.SMS

Example:

$KEY(STGADMIN) TYPE(FAC)
ADR.COPY.CNCURRNT.- UID(endusers) SERVICE(READ)

The following resource is restricted to Application Production Support Team members, Automated Operations, DASD managers, and System programmers.

STGADMIN.IDC.DCOLLECT

Example:

$KEY(STGADMIN) TYPE(FAC)
IDC.DCOLLECT.- UID(appsaudt) SERVICE(READ)
IDC.DCOLLECT.- UID(autoaudt) SERVICE(READ)
IDC.DCOLLECT.- UID(dasbaudt) SERVICE(READ)
IDC.DCOLLECT.- UID(dasdaudt) SERVICE(READ)
IDC.DCOLLECT.- UID(syspaudt) SERVICE(READ)
IDC.DCOLLECT.- UID(*) PREVENT

The following resources are restricted to Application Production Support Team members, DASD managers, and System programmers.

STGADMIN.ARC.CANCEL
STGADMIN.ARC.LIST
STGADMIN.ARC.QUERY
STGADMIN.ARC.REPORT
STGADMIN.DMO.CONFIG
STGADMIN.IFG.READVTOC
STGADMIN.IGG.DELGDG.FORCE

Example:

$KEY(STGADMIN) TYPE(FAC)
ARC.CANCEL.- UID(appsaudt) SERVICE(READ)
ARC.CANCEL.- UID(dasbaudt) SERVICE(READ)
ARC.CANCEL.- UID(dasdaudt) SERVICE(READ)
ARC.CANCEL.- UID(syspaudt) SERVICE(READ)
ARC.CANCEL.- UID(*) PREVENT

The following resource prefixes, at a minimum, are restricted to DASD managers and System programmers.

STGADMIN.ADR
STGADMIN.ANT
STGADMIN.ARC
STGADMIN.DMO
STGADMIN.ICK
STGADMIN.IDC
STGADMIN.IFG
STGADMIN.IGG
STGADMIN.IGWSHCDS

Example:

$KEY(STGADMIN) TYPE(FAC)
ADR. - UID(dasbaudt) SERVICE(READ)
ADR.- UID(dasdaudt) SERVICE(READ)
ADR.- UID(syspaudt) SERVICE(READ)
ADR.- UID(*) PREVENT

The following Storage Administrator functions prefix is restricted to DASD managers and System programmers and all access is logged.

STGADMIN.ADR.STGADMIN.

Example:

$KEY(STGADMIN) TYPE(FAC)
ADR.STGADMIN.- UID(dasbaudt) SERVICE(READ) LOG
ADR.STGADMIN.- UID(dasdaudt) SERVICE(READ) LOG
ADR.STGADMIN.- UID(syspaudt) SERVICE(READ) LOG
ADR.STGADMIN.- UID(*) PREVENT