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z/OS BMC CONTROL-O for ACF2 Security Technical Implementation Guide

V7R1 · · · Released 02 Apr 2025 · 7 rules
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This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DOD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: disa.stig_spt@mail.mil.
Digest of Updates vs. V6R8 · 23 Nov 2022 ✎ 5

Comparison against the immediately-prior release (V6R8). Rule matching uses the Group Vuln ID. Content-change detection compares the rule’s description, check, and fix text after stripping inline markup — cosmetic-only edits aren’t flagged.

Content changes 5

  • V-224123 Medium fix BMC CONTROL-O configuration/parameter values are not specified properly.
  • V-224124 Medium fix BMC CONTROL-O configuration/parameter values are not specified properly.
  • V-224125 Medium fix BMC CONTROL-O security exits are not installed or configured properly.
  • V-224126 Medium descriptioncheckfix BMC CONTROL-O installation data sets will be properly protected.
  • V-224128 Medium descriptioncheckfix BMC CONTROL-O resources must be properly defined and protected.
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b
BMC CONTROL-O configuration/parameter values are not specified properly.
CM-7 - Medium - CCI-000381 - V-224123 - SV-224123r1069976_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
ZCTO0040
Vuln IDs
  • V-224123
  • V-18014
Rule IDs
  • SV-224123r1069976_rule
  • SV-32004
BMC CONTROL-O configuration/parameters control the security and operational characteristics of products. If these parameter values are improperly specified, security and operational controls may be weakened. This exposure may threaten the availability of the product applications, and compromise the confidentiality of customer data.
Checks: C-25796r518815_chk

Refer to the following applicable reports produced by the z/OS Data Collection: - IOA.RPT(SECPARM) Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(ZCTO0040) The following keywords will have the specified values in the BMC CONTROL-O security parameter member: Keyword Value DEFMCHKO $$CTOEDM SECTOLO NO DFMO01 EXTEND DFMO02 EXTEND DFMO03 EXTEND DFMO04 EXTEND DFMO08 EXTEND DFMO10 PROD (new for 6.3.xx) DFMO15 EXTEND

Fix: F-25784r1069975_fix

The BMC CONTROL-O systems programmer will verify that any configuration/parameters that are required to control the security of the product are properly configured and syntactically correct. Set the standard values for the BMC CONTROL-O security parameters for the specific Access Control Program (ACP) environment along with additional IOA security parameters with standard values as documented below. Keyword Value DEFMCHKO $$CTOEDM SECTOLO NO DFMO01 EXTEND DFMO02 EXTEND DFMO03 EXTEND DFMO04 EXTEND DFMO08 EXTEND DFMO10 PROD (new for 6.3.xx) DFMO15 EXTEND

b
BMC CONTROL-O configuration/parameter values are not specified properly.
CM-7 - Medium - CCI-000381 - V-224124 - SV-224124r1069974_rule
RMF Control
CM-7
Severity
M
CCI
CCI-000381
Version
ZCTO0041
Vuln IDs
  • V-224124
  • V-22689
Rule IDs
  • SV-224124r1069974_rule
  • SV-32006
BMC CONTROL-O configuration/parameters control the security and operational characteristics of products. If these parameter values are improperly specified, security and operational controls may be weakened. This exposure may threaten the availability of the product applications, and compromise the confidentiality of customer data.
Checks: C-25797r518818_chk

Refer to the following applicable reports produced by the z/OS Data Collection: - IOA.RPT(CTOPARM) Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(ZCTO0041) The following keywords will have the specified values in the BMC CONTROL-O security parameter member: Keyword Value RUNTDFT OWNER RUNTCACH 100 AUTOMLOG V

Fix: F-25785r1069973_fix

The BMC CONTROL-O systems programmer will verify that any configuration/parameters that are required to control the security of the product are properly configured and syntactically correct. Set the standard values for the BMC CONTROL-O security parameters for the specific Access Control Program (ACP) environment along with additional IOA security parameters with standard values as documented below. Keyword Value RUNTDFT OWNER RUNTCACH 100 AUTOMLOG V

b
BMC CONTROL-O security exits are not installed or configured properly.
CM-3 - Medium - CCI-001744 - V-224125 - SV-224125r1069964_rule
RMF Control
CM-3
Severity
M
CCI
CCI-001744
Version
ZCTO0060
Vuln IDs
  • V-224125
  • V-17985
Rule IDs
  • SV-224125r1069964_rule
  • SV-32016
The BMC CONTROL-O security exits enable access authorization checking to BMC CONTROL-O commands, features, and online functionality. If these exit(s) is (are) not in place, activities by unauthorized users may result. BMC CONTROL-O security exit(s) interface with the ACP. If an unauthorized exit was introduced into the operating environment, system security could be weakened or bypassed. These exposures may result in the compromise of the operating system environment, ACP, and customer data.
Checks: C-25798r1069962_chk

Interview the systems programmer responsible for the BMC CONTROL-O. Determine if the site has modified the following security exit(s): CTOSE01 CTOSE02 CTOSE03 CTOSE04 CTOSE08 CTOSE10 CTOSE15 Ensure the above security exit(s) has (have) not been modified. If the above security exit(s) has (have) been modified, ensure that the security exit(s) has (have) been approved by the site systems programmer and the approval is on file for examination.

Fix: F-25786r1069963_fix

The system programmer responsible for the BMC CONTROL-O will review the BMC CONTROL-O operating environment. Ensure that the following security exit(s) is (are) installed properly. Determine if the site has modified the following security exit(s): CTOSE01 CTOSE02 CTOSE03 CTOSE04 CTOSE08 CTOSE10 CTOSE15 Ensure that the security exit(s) has (have) not been modified. If the security exit(s) has (have) been modified, ensure the security exit(s) has (have) been checked as to not violate any security integrity within the system and approval documentation is on file.

b
BMC CONTROL-O installation data sets will be properly protected.
CM-5 - Medium - CCI-001499 - V-224126 - SV-224126r1070017_rule
RMF Control
CM-5
Severity
M
CCI
CCI-001499
Version
ZCTOA000
Vuln IDs
  • V-224126
  • V-16932
Rule IDs
  • SV-224126r1070017_rule
  • SV-31907
BMC CONTROL-O installation data sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these data sets could result in violating the integrity of the base product, which could result in compromising the operating system or sensitive data.
Checks: C-25799r1070015_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(CTORPT) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZCTO0000) Verify that the accesses to the BMC CONTROL-O installation data sets are properly restricted. If the following guidance is true, this is not a finding. The ACF2 data set rules for the data sets restricts READ access to auditors, BMC users, and BMC STCs and/or batch users. The ACF2 data set rules for the data sets restricts WRITE and/or greater access to systems programming personnel. The ACF2 data set rules for the data sets specify that all (i.e., failures and successes) WRITE and/or greater access are logged.

Fix: F-25787r1070016_fix

The ISSO will ensure that WRITE and/or greater access to BMC CONTROL-O installation data sets are limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to auditors, BMC users, and BMC STCs and/or batch users. All failures and successful WRITE and/or greater accesses are logged. The installing systems programmer will identify and document the product data sets and categorize them according to who will have update and alter access and if required that all update and allocate access is logged. The installing systems programmer will identify if any additional groups have update and/or alter access for specific data sets, and once documented, will work with the ISSO to ensure they are properly restricted to the Access Control Program (ACP) active on the system. (Note: The data sets and/or data set prefixes identified below are examples of a possible installation. The actual data sets and/or prefixes are determined when the product is actually installed on a system through the product's installation guide and can be site specific.) Data sets to be protected will be: SYS2.IOA.*.CTOI. The following commands are provided as a sample for implementing data set controls: $KEY(SYS2) IOA.-.CTOI.- UID(<syspaudt>) R(A) W(L) A(L) E(A) IOA.-.CTOI.- UID(<audtaudt>) R(A) E(A) IOA.-.CTOI.- UID(<bmcuser>) R(A) E(A) IOA.-.CTOI.- UID(CONTROLO) R(A) E(A)

b
BMC CONTROL-O STC data sets must be properly protected.
CM-5 - Medium - CCI-001499 - V-224127 - SV-224127r958616_rule
RMF Control
CM-5
Severity
M
CCI
CCI-001499
Version
ZCTOA001
Vuln IDs
  • V-224127
  • V-17067
Rule IDs
  • SV-224127r958616_rule
  • SV-31943
BMC CONTROL-O STC data sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these data sets could result in violating the integrity of the base product which could result in compromising the operating system or sensitive data.
Checks: C-25800r868148_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(CTOSTC) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZCTO0001) Verify that the accesses to the BMC CONTROL-O STC data sets are properly restricted. If the following guidance is true, this is not a finding. ___ The ACF2 data set access authorizations restrict READ access to auditors, operators, and domain level production control and scheduling personnel. ___ The ACF2 data set access authorizations restrict WRITE and/or greater access to systems programming personnel. ___ The ACF2 data set access authorizations restrict UPDATE access to the BMC users and BMC STCs and/or batch users.

Fix: F-25788r868149_fix

The ISSO will ensure that WRITE and/or greater access to BMC CONTROL-O STC data sets are limited to systems programmers only. UPDATE access can be given to BMC users and the BMC STCs and/or batch users. READ access can be given to auditors, operators, and domain level production control and scheduling personnel. The installing systems programmer will identify and document the product data sets and categorize them according to who will have what type of access and if required which type of access is logged. The installing systems programmer will identify any additional groups requiring access to specific data sets, and once documented will work with the ISSO to ensure they are properly restricted to the ACP (Access Control Program) active on the system. (Note: The data sets and/or data set prefixes identified below are examples of a possible installation. The actual data sets and/or prefixes are determined when the product is actually installed on a system through the product's installation guide and can be site specific.) Data sets to be protected will be: SYS3.IOA.*.CTOO. The following commands are provided as a sample for implementing data set controls: $KEY(SYS3) IOA.-.CTOO.- UID(<syspaudt>) R(A) W(A) A(A) E(A) IOA.-.CTOO.- UID(CONTROLO) R(A) W(A) E(A) IOA.-.CTOO.- UID(<bmcuser>) R(A) W(A) E(A) IOA.-.CTOO.- UID(<audtaudt>) R(A) E(A) IOA.-.CTOO.- UID(<operaudt>) R(A) E(A) IOA.-.CTOO.- UID(<pcspaudt>) R(A) E(A)

b
BMC CONTROL-O resources must be properly defined and protected.
AC-3 - Medium - CCI-000213 - V-224128 - SV-224128r1069984_rule
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
ZCTOA020
Vuln IDs
  • V-224128
  • V-17947
Rule IDs
  • SV-224128r1069984_rule
  • SV-32061
BMC CONTROL-O can run with sensitive system privileges, and potentially can circumvent system controls. Failure to properly control access to product resources could result in the compromise of the operating system environment, and compromise the confidentiality of customer data. Many utilities assign resource controls that can be granted to system programmers only in greater than read authority. Resources are also granted to certain nonsystems personnel with read only authority.
Checks: C-25801r1069982_chk

Refer to the following report produced by the ACF2 Data Collection and Data Set and Resource Data Collection: - SENSITVE.RPT(ZCTO0020) - ACF2CMDS.RPT(RESOURCE) - Alternate report Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZCTO0020) Verify that the accesses to resources and/or generic equivalent are properly restricted according to the requirements specified in BMC CONTROL-O Resources table in the z/OS STIG Addendum. If the following guidance is true, this is not a finding. Note: To determine what resource class is used review the IOACLASS setting in SECPARM. The "Trigger" resources i.e., $$SECxxx (xxx is unique to the product) are defined in the FACILITY resource class The ACF2 resources are defined with a default access of PREVENT. The ACF2 resource access authorizations restrict access to the appropriate personnel. The ACF2 resource logging requirements are specified.

Fix: F-25789r1069983_fix

The ISSO will work with the systems programmer to verify that the following are properly specified in the Access Control Program (ACP). Note: To determine what resource class is used review the IOACLASS setting in SECPARM. The "Trigger" resources i.e., $$SECxxx (xxx is unique to the product) are defined in the FACILITY resource class (Note: The resource class, resources, and/or resource prefixes identified below are examples of a possible installation. The actual resource class, resources, and/or resource prefixes are determined when the product is actually installed on a system through the product's installation guide and can be site specific.) Use BMC CONTROL-O Resources and BMC INCONTROL Resources Descriptions tables in the z/OS STIG Addendum. These tables list the resources, descriptions, and access and logging requirements. Ensure the guidelines for the resources and/or generic equivalent specified in the z/OS STIG Addendum are followed. The following commands are provided as a sample for implementing resource controls: $key($$ctoaop) type(ioa) - uid(<operaudt>) log - uid(<pcspaudt>) log - uid(<prodaudt>) log - uid(<syspaudt>) log - uid(*) prevent

b
BMC CONTROL-O Started Task name is not properly identified / defined to the system ACP.
IA-2 - Medium - CCI-000764 - V-224129 - SV-224129r958482_rule
RMF Control
IA-2
Severity
M
CCI
CCI-000764
Version
ZCTOA030
Vuln IDs
  • V-224129
  • V-17452
Rule IDs
  • SV-224129r958482_rule
  • SV-32073
BMC CONTROL-O requires a started task that will be restricted to certain resources, datasets and other system functions. By defining the started task as a userid to the system ACP, It allows the ACP to control the access and authorized users that require these capabilities. Failure to properly control these capabilities, could compromise of the operating system environment, ACP, and customer data.
Checks: C-25802r518833_chk

Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ATTSTC) Insure that the logonids(s) for the BMC CONTROL-O started task(s) includes the following: STC MUSASS NO-SMC

Fix: F-25790r518834_fix

The BMC CONTROL-O system programmer and the IAO will ensure that a product's Started Task(s) is properly Identified / defined to the System ACP. If the product requires a Started Task, verify that it is properly defined to the System ACP with the proper attributes. Most installation manuals will indicate how the Started Task is identified and any additional attributes that must be specified. Example: SET LID CHANGE CONTROLO STC MUSASS NO-SMC