None Computing title z/OS CA Auditor for TSS Security Technical Implementation Guide version 7 releaseinfo Release: 2 Vuln_Num V-224618 Rule_ID SV-224618r1145775_rule Severity medium Rule_Title CA Auditor installation data sets are not properly protected. Vuln_Discuss 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. Check_Content 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_Text 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) Not_Reviewed Vuln_Num V-224619 Rule_ID SV-224619r1146311_rule Severity medium Rule_Title CA Auditor User data sets are not properly protected. Vuln_Discuss 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. Check_Content 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_Text 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) Not_Reviewed Vuln_Num V-224620 Rule_ID SV-224620r1145780_rule Severity medium Rule_Title CA Auditor resources are not properly defined and protected. Vuln_Discuss 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. Check_Content 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_Text 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) Not_Reviewed