What changed in z/OS CA 1 Tape Management for ACF2 STIG V7R2V7R2 changes

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Refer to the following reportreports produced by the z/OS Data Collection: - CA1RPT(TMSTMVT) - for r11.5 and below. - CA1RPT(TMOOPTxx) - for r12.0 and above. Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(ZCA10041). For r11.5 and below, refer to offset x'18' from the beginning of module TMSTMVT. For r12.0 and above, refer to the SHUTDWN option specified in the TMOOPTxx. The TMOOPTxx member is specified in the TMOSYSxx member in the datadataset set allocated by the TMSPARM DD statement in the TMSINIT STC. If the default CA 1 system password is not being utilized, this is not a finding. NOTENote: The default system password for CA 1 provided by CA is CA1(TMS). The default system passwords provided by SSO are SSOCA1DF and SSOC@1DF.

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The systems programmer/ISSO will ensure that the CA 1 system password is changed from the vendor default system password. Verify upon installation that the password is not the same as the default password and user distributed with the original installation default. For r11.5 and below, refer to offset x'18' from the beginning of module TMSTMVT. For r12.0 and above, refer to the SHUTDWN option specified in the TMOOPTxx. The TMOOPTxx member is specified in the TMOSYSxx member in the datadataset set allocated by the TMSPARM DD statement in the TMSINIT STC. NOTENote: The default system password for CA 1 provided by CA is CA1(TMS). The default system passwords provided by SSO are SSOCA1DF and SSOC@1DF.

V-224256 in V7R2

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Refer to the following report produced by the z/OS Data Collection: - CA1RPT(TMSCKLVL). Determine if CA 1 user exits, TMSUXnA and TMSUXnS (for r11.5 and below) or TMSXITA and TMSXITS (for r12.0 and above) are active. If both CA 1 user exits are not found, this is not a finding. If one or both user exits are installed and the following requirements are true, this is not a finding: ___ The usage and function of the user exit(s) is fully documented. ___ The use of the user exit(s) is approved. ___ All associated documentation is on file with the ISSO.

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Ensure that the site ISSO has reviewed, evaluated, and approved the usage of CA 1 user exits, TMSUXnA and TMSUXnS (for r11.5 and below) or TMSXITA and TMSXITS (for r12.0 and above). If one or both user exits are installed, and the following requirements will be followed: The usage and function of the user exit(s) is fully documented. The use of the user exit(s) is approved. All associated documentation is on file with the ISSO.

Discussion

CA- 1 Tape Management user exits, TMSUXnA and TMSUXnS, provide the capability to bypass or modify existing ACP controls. A review and evaluation of exit code must be performed to ensure that the integrity of the CA- 1 processing environment is kept intact. Unauthorized usage of these exits may compromise the confidentiality and integrity of customer data.

V-224257 in V7R2

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CA 1 Tape Management installation data sets must be properly protected.

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Refer to the following report produced by the Datadataset Set and Resource Data Collection: - SENSITVE.RPT(CA1PROD). Automated Analysis Refer to the following report produced by the Datadataset Set and Resource Data Collection: - PDI(ZCA10000). Verify that the accesses to the CA 1 Tape Management installation datadatasets sets are properly restricted. If the following guidance is true, this is not a finding. ___ The ACF2 datadataset set rules for the datadatasets setsrestrict restricts READ access to all authorized users. ___ The ACF2 datadataset set rules for the datadatasets setsrestrict restricts WRITE and/or greater access to systems programming personnel. ___ The ACF2 datadataset set rules for the datadatasets sets specify that all (i.e., failures and successes) WRITE and/or greater access is logged.

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Ensure that WRITE and/or greater access to CA 1 Tape Management installation datadatasets sets is limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to all authorized users. The installing systems programmer will identify and document the product datadatasets, sets and categorize them according to who will have WRITE and/or greater access, and if required, ensure 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 setsdatasets, and once documented will work with the ISSO to seeensure that they are properly restricted to the ACP (Access Control Program) active on the system. The following is an example of the type of datadatasets sets to be protected: SYS2.CA1. SYS2A.CA1.*.CAILIB SYS2A.CA1.*.CAILPA Or SYS2A.CA1.*.CTAPLINK SYS3.CA1. SYS3A.CA1.*.CAILIB Or SYS3A.CA1.*.CTAPLINK SYS3A.CA1.*.CTAPLPA The following commands are provided as a sample for implementing datadataset set controls: $KEY(S2C) $PREFIX(SYS2) CA1.V-.- UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-.- UID(authorized users/*) R(A) E(A) SET RULE COMPILE 'ACF2.MVA.DSNRULES(S2C)' STORE $KEY(SYS2A0C) $MODE(ABORT) $PREFIX(SYS2A) CA1.V-.CAILIB UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-.CAILIB UID(authorized users/*) R(A) E(A) CA1.V-.CAILPA UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-.CAILPA UID(authorized users/*) R(A) E(A) Or CA1.V-. CTAPLINK UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-. CTAPLINK UID(authorized users/*) R(A) E(A) SET RULE COMPILE 'ACF2.MVA.DSNRULES(SYS2A0C)' STORE $KEY(S3C) $PREFIX(SYS3) CA1.V-.- UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-.- UID(authorized users/*) R(A) E(A) SET RULE COMPILE 'ACF2.MVA.DSNRULES(S3C)' STORE $KEY(SYS3A0C) $MODE(ABORT) $PREFIX(SYS3A) CA1.V-.CAILIB UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-.CAILIB UID(authorized users/*) R(A) E(A) Or CA1.V-. CTAPLINK UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-. CTAPLINK UID(authorized users/*) R(A) E(A) CA1.V-. CTAPLPA UID(syspaudt) R(A) W(L) A(L) E(A) CA1.V-. CTAPLPA UID(authorized users/*) R(A) E(A) SET RULE COMPILE 'ACF2.MVA.DSNRULES(SYS3A0C)' STORE

Discussion

CA 1 Tape Management installation datadatasets sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these datadatasets sets could result in violating the integrity of the base product which could result in compromising the operating system or sensitive data.

V-224258 in V7R2

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CA- 1 Tape Management STC data sets must be properly protected.

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Refer to the following report produced by the ACF2 Data Collection and Datadataset Set and Resource Data Collection: - SENSITVE.RPT(CA1STC). Automated Analysis Refer to the following report produced by the Datadataset Set and Resource Data Collection: - PDI(ZCA10001). Verify that the accesses to CA1 Tape Management Started Tasks (STCs) datadatasets sets are properly restricted. If the following guidance is true, this is not a finding. ___ The ACF2 datadataset set access authorizations restrict READ access to auditors. ___ The ACF2 datadataset set access authorizations restrict WRITE and/or greater access to systems programming personnel. ___ The ACF2 datadataset set access authorizations restrict WRITE and/or greater access to CA1 Tape Management STCs and/or batch users.

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Ensure that WRITE and/or greater access to CA1 Tape management STC datadatasets sets is limited to systems programmers and/or CA1 Tape management STC(s) and/or batch user(s) only. (Note: The datadatasets sets and/or datadataset set prefixes identified below are examples of a possible installation. The actual datadatasets 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.) DataDatasets sets to be protected will be: CA1.TMS* (DataDatasets sets that are altered by the product's STCs, this can be more specific.) The following commands are provided as a sample for implementing datadataset set controls: $KEY(SYS3) CA1.TMS*.**- UID(&ltsyspaudt>) R(A) W(A) A(A) E(A) CA1.TMS*.**- UID(&ltTape Management STCs and/or batch users >) R(A) W(A) A(A) E(A) CA1.TMS*.**- UID(&ltaudtaudt>) R(A) E(A)

Discussion

CA- 1 Tape Management STC datadatasets sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these datadatasets sets could result in violating the integrity of the base product which could result in compromising the operating system or sensitive data.

V-224259 in V7R2

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CA 1 Tape Management TMC, AUDIT and optional RDS and VPD data sets will be properly protected.

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Refer to the following report produced by the Datadataset Set and Resource Data Collection: - SENSITVE.RPT(CA1RPT). Automated Analysis Refer to the following report produced by the Datadataset Set and Resource Data Collection: - PDI(ZCA10003). EnsureVerify that all CA 1 Tape Management TMC, AUDIT, and optional RDS and VPD datadatasets sets are properly protected. If the following guidance is true, this is not a finding. ___ The ACF2 datadataset set access authorizations restrictsrestrict READ access to application support personnel, production control and scheduling personnel, operations personnel, and auditors. ___ The ACF2 datadataset set access authorizations restrictsrestrict WRITE and/or greater access to only systems programming personnel and tape management personnel. ___ The ACF2 datadataset set access authorizations restrictsrestrict UPDATE access is limited to CA 1 batch production jobs, and CA 1 started tasks. ___ The ACF2 datadataset set access authorizations specify that all (i.e., failures and successes) ALTER access are logged.

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The ISSO will ensure that WRITE and/or greater access to CA 1 TMC, AUDIT, and optional RDS and VPD datadatasets setsis are limited to only systems programming personnel and tape management personnel. UPDATE access can be given to CA 1 STCs and/or batch users. READ access can be given to application support personnel, production control and scheduling personnel, operations personnel, and auditors. ALTER access will be logged. The installing systems programmer will identify and document the product datadatasets, sets and categorize them according to who will have updateWRITE and/or altergreater access, and if required, ensure that all updateWRITE and/or allocategreater access is logged. The installing systems programmer will identify if any additional groups have updateWRITE and/or altergreater access for specific data setsdatasets, 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 datadatasets sets and/or datadataset set prefixes identified below are examples of a possible installation. The actual datadatasets 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.) Due to the unique file structure of the TMC and Audit data setsdatasets, CA 1 uses the YSVC programs to handle all direct I/O activity. Because standard OPEN/CLOSE macros are not used, typical datadataset set security checks are not performed. Even if a user does not have readREAD authorityaccess to these data setsdatasets, the YSVC programs can enable that user to read and update records within these files. Therefore, control READ access to the TMC and Audit datadatasets sets by the YSVCUNCD and YSVCCOND resource names. Typical users should be restricted to conditional READ access. Restrict CA 1 batch production jobs, and CA 1 started tasks to the following access authority: Unconditional READ and UPDATE access to the TMC, Audit, Retention, and Vault Pattern Description data setsdatasets. NOTENote: READ and UPDATE access to the TMC and Audit datadatasets sets are controlled by the YSVCUNCD and YSVCCOND resource names, and by standard ACP datadataset set controls, because some CA 1 utilities use conventional OPEN/CLOSE methods. The following commands are provided as a sample for implementing datadataset set controls: SET RULE $KEY(S3C) $PREFIX(SYS3) CA1.AUDIT UID(&ltaudtaudt>) R(A) E(A) CA1.AUDIT UID(&ltoperaudt>) R(A) E(A) CA1.AUDIT UID(&ltpcspaudt>) R(A) E(A) CA1.AUDIT UID(CA1 STCs) R(A) W(A) E(A) CA1.AUDIT UID(&ltsyspaudt>) R(A) W(A) A(L) E(A) CA1.AUDIT UID(&lttapeaudt>) R(A) W(A) A(L) E(A) CA1.AUDIT UID(&lttstcaudt>) R(A) W(A) A(L) E(A) CA1.RDS UID(&ltsyspaudt>) R(A) W(A) A(L) E(A) CA1.RDS UID(&lttapeaudt>) R(A) W(A) A(L) E(A) CA1.RDS UID(&lttstcaudt>) R(A) W(A) A(L) E(A) CA1.TMC UID(&ltappsaudt>) R(A) E(A) CA1.TMC UID(&ltaudtaudt>) R(A) E(A) CA1.TMC UID(&ltoperaudt>) R(A) E(A) CA1.TMC UID(&ltpcspaudt>) R(A) E(A) CA1.TMC UID(CA1 STCs) R(A) W(A) E(A) CA1.TMC UID(&ltsyspaudt>) R(A) W(A) A(L) E(A) CA1.TMC UID(&lttapeaudt>) R(A) W(A) A(L) E(A) CA1.TMC UID(&lttstcaudt>) R(A) W(A) A(L) E(A) CA1.VPD UID(&ltsyspaudt>) R(A) W(A) A(L) E(A) CA1.VPD UID(&lttapeaudt>) R(A) W(A) A(L) E(A) CA1.VPD UID(&lttstcaudt>) R(A) W(A) A(L) E(A)

Discussion

CA 1 Tape Management TMC and AUDIT and optional datadatasets sets control the operations and access to the tape management system, and site specific information regarding tape volumes. Unauthorized access to these datadatasets sets could threaten the integrity and availability of the CA 1 Tape Management System, and compromise the confidentiality of customer data.

V-224260 in V7R2

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Refer to the following report produced by the ACF2 Data Collection and Datadataset Set and Resource Data Collection: - SENSITVE.RPT(CACMD). - ACF2CMDS.RPT(RESOURCE) - Alternate report. Automated Analysis Refer to the following report produced by the Datadataset Set and Resource Data Collection: - PDI(ZCA10020). EnsureVerify that all CA 1 command resources are properly protected according to the requirements specified in CA 1 Command Resources table in the z/OS STIG Addendum. If the following guidance is true, this is not a finding. ___ The ACF2 resources and/or generic equivalent as designated in the above table are defined with a default access of NONE. ___ The ACF2 resource access authorizations restrict access to the appropriate personnel as designated in the above table. ___ The ACF2 resource logging is specified as designated in the above table.

V-224261 in V7R2

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Refer to the following report produced by the ACF2 Data Collection and Datadataset Set and Resource Data Collection: - SENSITVE.RPT(CATAPE). - ACF2CMDS.RPT(RESOURCE) - Alternate report. Refer to the following report produced by the z/OS Data Collection: - CA1RPT(TMSSECAB). - CA1RPT(TMSTMVT) - for r11.5 and below. - CA1RPT(TMOOPTxx) - for r12.0 and above. - CA1RPT(TMOSECxx) - for r12.6 and above. Automated Analysis requiring additional analysis Refer to the following report produced by the Datadataset Set and Resource Data Collection: - PDI(ZCA10021). EnsureVerify that all CA 1 function and password resources are properly protected according to the requirements specified in the CA 1 Function and Password Resources table in the z/OS STIG Addendum. If the following guidance is true, this is not a finding. ___ The ACF2 resources and/or generic equivalent as designated in the above table are defined with a default access of NONE. ___ The ACF2 resource access authorizations restrict access to the appropriate personnel as designated in the above table. ___ The ACF2 resource logging is specified as designated in the above table. Note: CA 1 password resources may require additional analysis to ensureverify access authorization is justified. CA 1 system password is obtained at offset x'18' from the beginning of module TMSTMVT for r11.5 and below and SHUTDWN option specified in the TMOOPTxx for r12.0 and above. CA 1 Online User Passwords can be obtained from TMSSECAB for all releases or TMOSECxx, if present, for r12.6 and above.

V-224262 in V7R2

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Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ATTSTC). Verify that the logonid(s) for the CA 1 Tape Management started task(s) is (are) properly defined. If the following attributes are defined, this is not a finding. STC

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The IAOISSO working with the systems programmer will ensure the CA 1 Tape Management Started Task(s) is properly identified and/or 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. The following commands are provided as a sample for defining Started Task(s): SET LID insert TMSINIT stc name('STC, CA 1 Tape Management') insert CTS stc name('STC, CA 1 Common Tape System')

Discussion

CA 1 Tape Management requires a started task that will be restricted to certain resources, datasets, and other system functions. ByDefining 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.

V-224263 in V7R2

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Refer to the following report produced by the z/OS Data Collection: - CA1RPT(TMSSTATS). Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(ZCA10040). CA 1 external security utilizing ACF2 is accomplished in the manner described in this section. NOTENote: The TMOOPTxx member is specified in the TMOSYSxx member in the datadataset set allocated by the TMSPARM DD statement in the TMSINIT STC. By default, the suffix 00 is used for these members. However, overrides can be specified by PARM value(s) on the EXEC statement in the TMSINIT STC and/or in the TMOSYSxx member. Review the options and values of the below CA 1 parameters. If the options are set to the specified value, this is not a finding. CA 1 SECURITY OPTIONS - ACF2 Option Value BATCH YES obsolete as of r12.0 CATSEC NO obsolete as of r12.0 CMD YES CREATE see Note 1 DSNB YES FUNC YES see Note 2 OCEOV NO see Note 3 PMASK Do not specify or change PSWD YES SCRTCH NO SECWTO YES UNDEF FAIL UX0AUPD NO see Note 4 YSVC YES Note 1 : The CREATE parameter defines the level of access that is required to create a datadataset set on tape. The default value is UPDATE. However, the vendor recommends the value be set to CREATE if you are running CA Top Secret or ACF2 and ALTER if you are running RACF. Note 2 : The FUNC option provides supplementary security for BLP access. The tape label bypass privilege must still be specified in the ACF2 user LID record to allow access to BLP processing. Note 3 : The CA 1 security option, OCEOV, is set to NO because ACF2 obtains control of datadataset set OPEN/CLOSE processing before the CA 1 intercept. The vendor recommends that the first security call be used and that this CA 1 control option be turned OFF. Therefore, TAPEDSN must be specified in the OPTS option in the ACF2 GSO record. Note 4 : The UX0AUPD will specify YES only if you alter the fields are altered in the TMC and the TMSUXxA (for r11.5 and below) or TMSXITA (for r12.0 and above) is changed.

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The systems programmer/ISSO will ensure that the CA 1 external security options are specified in accordance with the ACP being used. CA 1 Tape Management ACP security interfaces are controlled by options coded in the TMOOPTxx member identified in the TMOSYSxx member of the datadataset set allocated by the TMSPARM DD statement in the TMSINIT STC. The specific required option settings are dependent on the ACP in use on the system. CA 1 SECURITY OPTIONS - ACF2 Option Value BATCH YES obsolete as of r12.0 CATSEC NO obsolete as of r12.0 CMD YES CREATE see noteNote 1 DSNB YES FUNC YES see noteNote 2 OCEOV NO see noteNote 3 PMASK Do not specify or change PSWD YES SCRTCH NO SECWTO YES UNDEF FAIL UX0AUPD NO see noteNote 4 YSVC YES Note 1 : The CREATE parameter defines the level of access that is required to create a datadataset set on tape. The default value is UPDATE. However, the vendor recommends the value be set to CREATE if you are running CA Top Secret or ACF2 and ALTER if you are running RACF. Note 2 : The FUNC option provides supplementary security for BLP access. The tape label bypass privilege must still be specified in the ACF2 user LID record to allow access to BLP processing. Note 3 : The CA 1 security option, OCEOV, is set to NO because ACF2 obtains control of datadataset set OPEN/CLOSE processing before the CA 1 intercept. The vendor recommends that the first security call be used and that this CA 1 control option be turned OFF. Therefore, TAPEDSN must be specified in the OPTS option in the ACF2 GSO record. Note 4 : The UX0AUPD will specify YES only if youfields alterare thealtered fields in the TMC and the TMSUXxA (for r11.5 and below) or TMSXITA (for r12.0 and above) is changed.

V-224264 in V7R2