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z/OS CA Auditor for ACF2 Security Technical Implementation Guide

  • Version/Release: V6R4
  • Published: 2022-10-06
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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.
b
CA Auditor installation data sets are not properly protected.
AC-3 - Medium - CCI-000213 - V-224265 - SV-224265r868065_rule
RMF Control
AC-3
Severity
Medium
CCI
CCI-000213
Version
ZADTA000
Vuln IDs
  • V-224265
  • V-16932
Rule IDs
  • SV-224265r868065_rule
  • SV-31918
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-25938r868063_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. ___ The ACF2 data set rules for the data sets restricts READ access to auditors, security administrators, and/or CA Auditor's STCs and batch users. ___ The ACF2 data set rules for the data sets restricts UPDATE and/or ALTER access to systems programming personnel. ___ The ACF2 data set rules for the data sets specify that all (i.e., failures and successes) UPDATE and/or ALTER access are logged.

Fix: F-25926r868064_fix

The ISSO will ensure that update and allocate access to CA Auditor installation data sets is limited to systems programmers only, and all update and allocate 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 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 ACP (Access Control Program) 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: $KEY(SYS2) EXAMINE.- UID(<syspaudt>) R(A) W(L) A(L) E(A) EXAMINE.- UID(<audtaudt>) R(A) E(A) EXAMINE.- UID(<secaaudt>) R(A) E(A) EXAMINE.- UID(EXAMMON) R(A) E(A) $KEY(SYS2A) EXAMINE.- UID(<syspaudt>) R(A) W(L) A(L) E(A) EXAMINE.- UID(<audtaudt>) R(A) E(A) EXAMINE.- UID(<secaaudt>) R(A) E(A) EXAMINE.- UID(EXAMMON) R(A) E(A)

b
CA Auditor User data sets are not properly protected.
CM-5 - Medium - CCI-001499 - V-224266 - SV-224266r519550_rule
RMF Control
CM-5
Severity
Medium
CCI
CCI-001499
Version
ZADTA002
Vuln IDs
  • V-224266
  • V-21592
Rule IDs
  • SV-224266r519550_rule
  • SV-32205
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-25939r519548_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. ___ The ACF2 data set rules for the data sets restricts UPDATE and/or ALTER access to systems programming personnel, security personnel and auditors.

Fix: F-25927r519549_fix

The IAO will ensure that update and allocate access to CA Auditor User data sets are limited to System 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 update and alter access and if required that all update and allocate access is logged. He will identify if any additional groups have update and/or alter access for specific data sets, and once documented he will work with the IAO to see that they are properly restricted to the ACP (Access Control Program) 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: $KEY(SYS3) EXAMINE.- UID(<syspaudt>) R(A) W(A) A(A) E(A) EXAMINE.- UID(<audtaudt>) R(A) W(A) A(A) E(A) EXAMINE.- UID(<secaaudt>) R(A) W(A) A(A) E(A)

b
CA Auditor resources are not properly defined and protected.
AC-4 - Medium - CCI-000035 - V-224267 - SV-224267r868068_rule
RMF Control
AC-4
Severity
Medium
CCI
CCI-000035
Version
ZADTA020
Vuln IDs
  • V-224267
  • V-17947
Rule IDs
  • SV-224267r868068_rule
  • SV-32208
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 system programmers only in greater than read authority. Resources are also granted to certain non systems personnel with read only authority.
Checks: C-25940r868066_chk

Refer to the following report produced by the ACF2 Data Collection and Data Set and Resource Data Collection: - SENSITVE.RPT(ZADT0020) - ACF2CMDS.RPT(RESOURCE) - Alternate report 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. ___ The ACF2 rules for the resources specify a default access of NONE. ___ The ACF2 rules for the resources are restricted access to system programmers, auditors, and security personnel.

Fix: F-25928r868067_fix

The IOA will verify that the LTDMMAIN resource in the PROGRAM resource class is restricted to system programmers, auditors, and security personnel. The ACF2 rules for the resource specify a default access of NONE. There are ACF2 rules defined and only system programmers, auditors, and security personnel have access. Example: SET R(PGM) $KEY(LTDMMAIN) TYPE(PGM) UID(<syspaudt>) ALLOW UID(<audtaudt>) ALLOW UID(<secaaudt>) ALLOW UID(*) PREVENT DATA(SRR FINDING FOR CA AUDITOR)