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z/OS TADz for RACF Security Technical Implementation Guide

V6R7 · · · Released 23 Nov 2022 · 4 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.
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b
Tivoli Asset Discovery for z/OS (TADz) Install data sets are not properly protected.
AC-3 - Medium - CCI-000213 - V-224537 - SV-224537r855214_rule
RMF Control
AC-3
Severity
M
CCI
CCI-000213
Version
ZTADR000
Vuln IDs
  • V-224537
  • V-16932
Rule IDs
  • SV-224537r855214_rule
  • SV-28470
Tivoli Asset Discovery for z/OS (TADz) Install data sets provide the capability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to their 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-26220r520898_chk

a) Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(TADZRPT) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZTAD0000) b) Verify that access to the TADz Install data set are properly restricted. ___ The RACF data set rules for the data sets does not restrict UPDATE and/or ALTER access to systems programming personnel. ___ The RACF data set rules for the data sets does not specify that all (i.e., failures and successes) UPDATE and/or ALTER access will be logged. c) If all of the above are untrue, there is NO FINDING. d) If any of the above is true, this is a FINDING.

Fix: F-26208r520899_fix

The IAO will ensure that update and alter access to program product data sets is limited to System Programmers and all update and allocate access is logged. Auditors should have read access. 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 alter access is logged. He will identify if any additional groups have update 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 set prefix to be protected will be: SYS2.TADZ. SYS2.TADZ.*.SHSIMOD1.** (optional fully-qualified APF). SYS3.TADZ. The following commands are provided as a sample for implementing dataset controls: ad 'sys2.TADZ.**' uacc(none) owner(sys2) - audit(success(update) failures(read)) - data('Vendor DS Profile: TADZ') pe 'sys2.TADZ.**' id(syspaudt) acc(a) pe 'sys2.tadz.**' id(audtaudt) ad 'sys2.tadz.*.shsimod1.**' uacc(none) owner(sys2) - audit(success(update) failures(read)) - data('Vendor DS Profile: Tivoli Asset Discovery APF DS') pe 'sys2.tadz.*.shsimod1.**' id(syspaudt) acc(a) pe 'sys2.tadz.*.shsimod1.**' id(audtaudt) ad 'sys3.TADZ.**' uacc(none) owner(sys3) - audit(success(update) failures(read)) - data('TADZ Vendor Datasets') pe 'sys3.TADZ.**' id(syspaudt) acc(a) pe 'sys3.tadz.**' id(audtaudt) setr generic(dataset) refresh

b
Tivoli Asset Discovery for zOS (TADz) STC and/or batch data sets are not properly protected.
CM-5 - Medium - CCI-001499 - V-224538 - SV-224538r868557_rule
RMF Control
CM-5
Severity
M
CCI
CCI-001499
Version
ZTADR001
Vuln IDs
  • V-224538
  • V-17067
Rule IDs
  • SV-224538r868557_rule
  • SV-28548
Tivoli Asset Discovery for zOS (TADz) STC and/or batch data sets provide the capability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to their 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-26221r868555_chk

Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(TADZSTC) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZTAD0001) For all (TADz) STC and/or batch data sets: If the UPDATE or greater access is restricted to systems programming personnel and the product STC(s) and/or batch job(s) this is not a finding. If any job scheduling products are in use and access is restricted to READ this is not a finding. If auditors have READ access this is not a finding.

Fix: F-26209r868556_fix

Grant update and alter access to Tivoli Asset Discovery for z/OS (TADz) STC and/or batch data sets are limited to systems programmers and TADz STC and/or batch jobs only. Grant Read access to any scheduling products that are in use. Grant Read access to auditors at the ISSO's discretion. 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. Identify if any additional groups have update access for specific data sets, and assure that they are properly restricted to the ACP (Access Control Program) active on the system. Data sets to be protected will be: SYS3.TADZ The following commands are provided as a sample for implementing dataset controls: ad 'sys3.tadz.*.iq*.**' uacc(none) owner(daztech) - audit(success(update) failures(read)) - data('TADZ Output Data') ad 'sys3.tadz.*.uiq.**' uacc(none) owner(daztech) - audit(success(update) failures(read)) - data('TADZ Output Data') ad 'sys3.tadz.*.um.**' uacc(none) owner(daztech) - audit(success(update) failures(read)) - data('TADZ Output Data') pe 'sys3.tadz.*.iq*.**' id(syspaudt) acc(a) pe 'sys3.tadz.*.iq*.**' id(tadzmon) acc(a) pe 'sys3.tadz.*.iq*.**' id(tadzinq) acc(a) pe 'sys3.tadz.*.uiq.**' id(syspaudt) acc(a) pe 'sys3.tadz.*.uiq.**' id(tadzmon) acc(a) pe 'sys3.tadz.*.uiq.**' id(tadzinq) acc(a) pe 'sys3.tadz.*.um.**' id(syspaudt) acc(a) pe 'sys3.tadz.*.um.**' id(tadzmon) acc(a) pe 'sys3.tadz.*.um.**' id(tadzinq) acc(a)

b
Tivoli Asset Discovery for z/OS (TADz) Started Task name(s) must be properly identified / defined to the system ACP.
IA-2 - Medium - CCI-000764 - V-224539 - SV-224539r520906_rule
RMF Control
IA-2
Severity
M
CCI
CCI-000764
Version
ZTADR030
Vuln IDs
  • V-224539
  • V-17452
Rule IDs
  • SV-224539r520906_rule
  • SV-28554
Tivoli Asset Discovery for z/OS (TADz) requires a started task(s) that will be restricted to certain resources, datasets and other system functions. By defining the started task as a userid to the system Access Control Program (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-26222r520904_chk

Refer to the following report produced by the RACF Data Collection: - RACFCMDS.RPT(LISTUSER) If the userid(s) for the TADz started task is defined to the security database, there is NO FINDING. If the userid(s) for the TADz started task is not defined to the security database, this is a FINDING.

Fix: F-26210r520905_fix

The Systems Programmer and ISSO will ensure that the started task for TADz is properly defined. Define the started task for TADz. Example: au tadzmon name('stc, tivoli AD') nopass - dfltgrp(stc) owner(stc) - data('stc for tivoli asset discovery')

b
IBM Tivoli Asset Discovery for zOS (TADz) Started task(s) must be properly defined to the STARTED resource class for RACF.
IA-2 - Medium - CCI-000764 - V-224540 - SV-224540r520909_rule
RMF Control
IA-2
Severity
M
CCI
CCI-000764
Version
ZTADR032
Vuln IDs
  • V-224540
  • V-17454
Rule IDs
  • SV-224540r520909_rule
  • SV-28561
Access to product resources should be restricted to only those individuals responsible for the application connectivity and who have a requirement to access these resources. Improper control of product resources could potentially compromise the operating system, ACP, and customer data.
Checks: C-26223r520907_chk

Refer to the following report produced by the RACF Data Collection: - DSMON.RPT(RACSPT) Automated Analysis Refer to the following report produced by the RACF Data Collection: - PDI(ZTAD0032) Verify that the IBM Tivoli Asset Discovery for zOS (TADz) started task(s) is (are) defined to the STARTED resource class profile and/or ICHRIN03 table entry.

Fix: F-26211r520908_fix

The IBM Tivoli Asset Discovery for zOS (TADz) system programmer and the IAO will ensure that a product's started task(s) is (are) properly identified and/or defined to the System ACP. A unique userid must be assigned for the IBM Tivoli Asset Discovery for zOS (TADz) started task(s) thru a corresponding STARTED class entry. The following sample set of commands is shown here as a guideline: rdef started TADZMON.** uacc(none) owner(admin) audit(all(read)) stdata(user(TADZMON) group(stc)) setr racl(started) ref