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z/OS CA Auditor for TSS Security Technical Implementation Guide

V7R2 · · · Released 01 Oct 2025 · 3 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. V7R1 · 30 Jan 2025 ✎ 3

Comparison against the immediately-prior release (V7R1). 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 3

  • V-224618 Medium checkfix CA Auditor installation data sets are not properly protected.
  • V-224619 Medium checkfix CA Auditor User data sets are not properly protected.
  • V-224620 Medium check CA Auditor resources are not properly defined and protected.
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b
CA Auditor installation data sets are not properly protected.
CM-5 - Medium - CCI-001499 - V-224618 - SV-224618r1145775_rule
RMF Control
CM-5
Severity
M
CCI
CCI-001499
Version
ZADTT000
Vuln IDs
  • V-224618
  • V-16932
Rule IDs
  • SV-224618r1145775_rule
  • SV-31920
CA Auditor 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-26301r1145773_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(ADTRPT). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZADT0000). Verify that the accesses to the CA Auditor installation data sets are properly restricted. If the following guidance is true, this is not a finding. The TSS data set rules for the data sets restrict READ access to auditors, security administrators, and/or CA Auditor's STCs and batch users. The TSS data set rules for the data sets restrict WRITE and/or greater access to systems programming personnel. The TSS data set rules for the data sets specify that all (i.e., failures and successes) WRITE and/or greater access are logged.

Fix: F-26289r1145774_fix

The ISSO will ensure that WRITE and/or greater access to CA Auditor installation data sets is limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to auditors, security administrators, and/or CA Auditor's STCs and batch users. The installing systems programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged. The installing systems programmer will identify if any additional groups have WRITE and/or greater 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. Data sets to be protected will be: SYS2.EXAMINE SYS2A.EXAMINE The following commands are provided as a sample for implementing data set controls: TSS PERMIT(<syspaudt>) DSN(SYS2.EXAMINE.) ACCESS(R) TSS PERMIT(<syspaudt>) DSN(SYS2.EXAMINE.) ACCESS(ALL) ACTION(AUDIT) TSS PERMIT(<audtaudt>) DSN(SYS2.EXAMINE.) ACCESS(R) TSS PERMIT(<secaaudt>) DSN(SYS2.EXAMINE.) ACCESS(R) TSS PERMIT(EXAMMON) DSN(SYS2.EXAMINE.) ACCESS(R) TSS PERMIT(<syspaudt>) DSN(SYS2A.EXAMINE.) ACCESS(R) TSS PERMIT(<syspaudt>) DSN(SYS2A.EXAMINE.) ACCESS(ALL) ACTION(AUDIT) TSS PERMIT(<audtaudt>) DSN(SYS2A.EXAMINE.) ACCESS(R) TSS PERMIT(<secaaudt>) DSN(SYS2A.EXAMINE.) ACCESS(R) TSS PERMIT(EXAMMON) DSN(SYS2A.EXAMINE.) ACCESS(R)

b
CA Auditor User data sets are not properly protected.
CM-5 - Medium - CCI-001499 - V-224619 - SV-224619r1146311_rule
RMF Control
CM-5
Severity
M
CCI
CCI-001499
Version
ZADTT002
Vuln IDs
  • V-224619
  • V-21592
Rule IDs
  • SV-224619r1146311_rule
  • SV-32207
CA Auditor User 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-26302r1145776_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(ADTUSER). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZADT0002). Verify that the accesses to the CA Auditor User data sets are properly restricted. If the following guidance is true, this is not a finding. The TSS data set rules for the data sets restrict WRITE and/or greater access to systems programming personnel, security personnel, and auditors.

Fix: F-26290r1146310_fix

The ISSO will ensure that WRITE and/or greater access to CA Auditor User data sets are limited to systems programmers, security personnel, and auditors. The installing systems programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged. The installing systems programmer will identify if any additional groups have WRITE and/or greater 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. Data sets to be protected will be: SYS3.EXAMINE The following commands are provided as a sample for implementing data set controls: TSS PERMIT(<syspaudt>) DSN(SYS3.EXAMINE) ACCESS(ALL) TSS PERMIT(<audtaudt>) DSN(SYS3.EXAMINE) ACCESS(ALL) TSS PERMIT(<secaaudt>) DSN(SYS3.EXAMINE) ACCESS(ALL)

b
CA Auditor resources are not properly defined and protected.
AC-3 - Medium - CCI-000213 - V-224620 - SV-224620r1145780_rule
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
ZADTT020
Vuln IDs
  • V-224620
  • V-17947
Rule IDs
  • SV-224620r1145780_rule
  • SV-32210
CA Auditor 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 systems programmers only in greater than read authority. Resources are also granted to certain non systems personnel with read only authority.
Checks: C-26303r1145779_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(ZADT0020). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZADT0020). Verify that the access to the LTDMMAIN resource in the PROGRAM resource class is restricted. If the following guidance is true, this is not a finding. The TSS owner is defined for the prefix of the resource and/or the resource classes RDT entry has DEFPROT specified. The TSS rules for the resources are restricted access to systems programmers, auditors, and security personnel.

Fix: F-26291r1041362_fix

The ISSO will verify that the LTDMMAIN resource in the PROGRAM resource class is restricted to systems programmers, auditors, and security personnel. The TSS owner is defined for the LTDMMAIN resource and/or PROGRAM RDT entry has DEFPROT specified. Example: TSS ADD(dept-acid)PROGRAM(LTDMMAIN) TSS REP(RDT)RESCLASS(PROGRAM)ATTR(DEFPROT) The TSS rules for the LTDMMAIN resource is restricted access to systems programmers, auditors, and security personnel. Example: TSS PERMIT(audtaudt)PROGRAM(LTDMMAIN) TSS PERMIT(secaaudt)PROGRAM(LTDMMAIN) TSS PERMIT(syspaudt)PROGRAM(LTDMMAIN)