None Computing title z/OS NetView for TSS Security Technical Implementation Guide version 7 releaseinfo Release: 2 Vuln_Num V-225580 Rule_ID SV-225580r1146108_rule Severity medium Rule_Title NetView configuration/parameter values must be specified properly. Vuln_Discuss NetView configuration/parameters control the security and operational characteristics of products. If these parameter values are improperly specified, security and operational controls may be weakened. This exposure may threaten the availability of the product applications, and compromise the confidentiality of customer data. Check_Content Review the member CxxSTYLE in the DSIPARM DD statement concatenation of the NetView CNMPROC STC procedure. Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZNET0040). If the following keywords specify the values in the NetView configuration requirements, this is not a finding. Keyword Value SECOPTS.OPERSEC SAFCHECK|SAFDEF SECOPTS.CMDAUTH SAF.FAIL|SAF.table Fix_Text The systems programmer and ISSO will review NetView configuration parameters and control options for compliance. To ensure authentication of users to NetView, ensure that CxxSTYLE in the DSIPARM DD statement concatenation of the NetView CNMPROC STC procedure has the following initialization parameter(s) specified: (Note: The data set identified above is an example of a possible installation. The data set is determined when the product is actually installed on a system through the product's installation guide and can be site specific.) SECOPTS.OPERSEC=SAFCHECK|SAFDEF When SECOPTS.OPERSEC=SAFCHECK is used, it specifies that operator identification and password or password phrase checking is performed using an SAF security product. The operator identifier must also be defined in DSIOPF, and other attributes given to the operator at logon are taken from the specified profile for the operator in DSIPRF. Security access checks are checked against the authority of the operator that occur when an operator tries to access a data set that is protected in the DATASET class of an SAF product or an MVS system command that is protected in the OPERCMDS class of an SAF product. When SECOPTS.OPERSEC=SAFDEF is used, it specifies that operator identification and password or password phrase checking is done using an SAF security product. Authority to log on as a NetView operator is controlled through the APPL class. The operator identifier must be authorized to the resource name in the APPL class which represents the NetView program. The attributes given to the operator at logon are defined in the NETVIEW segment of the user profile for the operator in the SAF product. For more information, refer to IBM Tivoli NetView for z/OS Security Reference. When SECOPTS.OPERSEC=SAFDEF is specified, any value for SECOPTS.CMDAUTH can be used. Additional details can be obtained in the IBM Tivoli NetView for z/OS Security Reference. SECOPTS.CMDAUTH=SAF.FAIL|SAF.table When SECOPTS.CMDAUTH=SAF.table is used, table specifies the backup table to be used for immediate commands and when the SAF product cannot make a security decision. This can occur when: No resource name is defined in the NETCMDS class which protects or authorizes this command. The NETCMDS class is not active. The security product is not active. When SECOPTS.CMDAUTH=SAF.FAIL is used, command authority checking will fail if the SAF product can reach no decision. Additional details can be obtained in the IBM Tivoli NetView for z/OS Administration Reference. Not_Reviewed Vuln_Num V-225581 Rule_ID SV-225581r1146363_rule Severity medium Rule_Title NetView install data sets are not properly protected. Vuln_Discuss NetView install data sets provide the capability 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(NETVRPT). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZNET0000). Verify that access to the NetView install 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. The TSS data set rules for the data sets do not specify that all (i.e., failures and successes) WRITE and/or greater access will be logged. Fix_Text The ISSO will ensure that WRITE and/or greater access to NetView install data sets is limited to systems programmers only, and all WRITE and/or greater access is logged. All other users can have READ access. 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 UPDATE 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.NETVIEW SYS2A.NETVIEW SYS3.NETVIEW The following commands are provided as a sample for implementing data set controls: TSS PERMIT(syspaudt) DSN(SYS2.netview.) ACCESS(r) TSS PERMIT(syspaudt) DSN(SYS2.netview.) ACCESS(all) ACTION(AUDIT) TSS PERMIT(syspaudt) DSN(SYS2a.netview.) ACCESS(r) TSS PERMIT(syspaudt) DSN(SYS2a.netview.) ACCESS(all) ACTION(AUDIT) TSS PERMIT(syspaudt) DSN(SYS3.netview.) ACCESS(r) TSS PERMIT(syspaudt) DSN(SYS3.netview.) ACCESS(all) ACTION(AUDIT) Not_Reviewed Vuln_Num V-225582 Rule_ID SV-225582r1146365_rule Severity medium Rule_Title NetView STC data sets are not properly protected. Vuln_Discuss NetView STC 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. Check_Content Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(NETVSTC). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZNET0001). Verify that acess to the NetView STC 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. 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 restrict WRITE and/or greater access to the product STC(s) and/or batch job(s). Fix_Text The ISSO will ensure that WRITE and/or greater access to NetView STC data sets are limited to systems programmers and NetView STC only, unless a letter justifying access is filed with the ISSO. 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 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.NETVIEW.<systemid>.* (VSAM data sets) The following commands are provided as a sample for implementing data set controls: TSS PERMIT(CNMPROC) DSN(SYS3.netview.<systemid>.) ACCESS(R) TSS PERMIT(audtaudt) DSN(SYS3.netview.<systemid>.) ACCESS(R) TSS PERMIT(syspaudt) DSN(SYS3.netview.<systemid>.) ACCESS(R) TSS PERMIT(tstcpaudt) DSN(SYS3.netview.<systemid>.) ACCESS(R) TSS PERMIT(CNMPROC) DSN(SYS3.netview.<systemid>.) ACCESS(ALL) TSS PERMIT(syspaudt) DSN(SYS3.netview.<systemid>.) ACCESS(ALL) TSS PERMIT(tstcaudt) DSN(SYS3.netview.<systemid>.) ACCESS(ALL) The VSAM Dataset required for greater than READ access are: SYS3.NETVIEW.<systemid>.AAUVSPL SYS3.NETVIEW.<systemid>.AAUVSSL SYS3.NETVIEW.<systemid>.BNJLGPR SYS3.NETVIEW.<systemid>.BNJLGSE SYS3.NETVIEW.<systemid>.BNJ36PR SYS3.NETVIEW.<systemid>.BNJ36SE SYS3.NETVIEW.<systemid>.DSIKPNL SYS3.NETVIEW.<systemid>.DSILIST SYS3.NETVIEW.<systemid>.DSILOGP SYS3.NETVIEW.<systemid>.DSILOGS SYS3.NETVIEW.<systemid>.DSISVRT SYS3.NETVIEW.<systemid>.DSITRCP SYS3.NETVIEW.<systemid>.DSITRCS SYS3.NETVIEW.<systemid>.SDSIOPEN Not_Reviewed Vuln_Num V-225583 Rule_ID SV-225583r1146116_rule Severity medium Rule_Title NetView resources must be properly defined and protected. Vuln_Discuss NetView 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 TSS Data Collection and Data Set and Resource Data Collection: - SENSITVE.RPT(ZNET0020). Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZNET0020). When SECOPTS.OPERSEC=SAFPW is specified in ZNET0040, this is not applicable. Ensure that all NetView resources and/or generic equivalents are properly protected according to the requirements specified in the NetView Resources table in the z/OS STIG Addendum. If the following guidance is true, this is not a finding. The TSS resources and/or generic equivalents as designated in the above table are owned or DEFPROT is specified for the resource class. The TSS resource access authorizations restrict access to the appropriate personnel as designated in the above table. Fix_Text The ISSO will work with the systems programmer to verify that the following are properly specified in the Access Control Program (ACP). (Note: The resource class, resources, and/or resource prefixes identified below are examples of a possible installation. The actual resource class, resources, and/or resource prefixes are determined when the product is actually installed on a system through the product's installation guide and can be site specific.) When SECOPTS.OPERSEC=SAFPW is specified in ZNET0040, this is not applicable. This can be bypassed. Ensure that all NetView resources and/or generic equivalents are properly protected according to the requirements specified in the NetView Resources table in the z/OS STIG Addendum. Additional details can be obtained in the IBM Tivoli NetView for z/OS Security Reference. Use the NetView Resources table in the z/OS STIG Addendum. This table lists the resources and access requirements for NetView, ensure the following guidelines are followed: The TSS resources and/or generic equivalents as designated in the above table are owned or DEFPROT is specified for the resource class. The TSS resource access authorizations restrict access to the appropriate personnel as designated in the above table. The following commands are provided as a sample for implementing resource controls: TSS ADD(dept-acid) NETCMDS(netid) TSS PERMIT(syspaudt) NETCMDS(netid.luname.ADDCMD) ACCESS(READ) Not_Reviewed Vuln_Num V-225584 Rule_ID SV-225584r1146119_rule Severity medium Rule_Title NetView Started Task name(s) is not properly identified/defined to the system ACP. Vuln_Discuss NetView requires a started task(s) that will be restricted to certain resources, data sets, and other system functions. Defining the started task as a userid to the system ACP allows the ACP to control the access and authorized users that require these capabilities. Failure to properly control these capabilities could compromise the operating system environment, ACP, and customer data. Check_Content Refer to the following reports produced by the TSS Data Collection: - TSSCMDS.RPT(@ACIDS). Review NetView STC/Batch ACID(s). If the following attributes are defined, this is not a finding. For CNMPROC FACILITY(STC, BATCH) PASSWORD(xxxxxxxx,0) SOURCE(INTRDR) NOSUSPEND MASTFAC(NETVIEW) For CNMPSSI FACILITY(STC, BATCH) PASSWORD(xxxxxxxx,0) SOURCE(INTRDR) NOSUSPEND Fix_Text The Systems Programmer and ISSO will ensure that the started task(s) for NetView is properly defined. Define the started task userid CNMPROC and CNMPSSI for NetView. Example: TSS CRE(CNMPROC) DEPT(Dept) NAME('NetView') - FAC(STC) MASTFAC(NETVIEW) PASSWORD(password,0) - SOURCE(INTRDR) TSS CRE(CNMPSSI) DEPT(Dept) NAME('NetView') - FAC(STC) PASSWORD(password,0) - SOURCE(INTRDR) Not_Reviewed Vuln_Num V-225585 Rule_ID SV-225585r1146122_rule Severity medium Rule_Title IBM Tivoli NetView Started task(s) must be properly defined to the Started Task Table ACID for Top Secret. Vuln_Discuss 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. Check_Content Refer to the following report produced by the TSS Data Collection: - TSSCMDS.RPT(#STC). Automated Analysis Refer to the following report produced by the TSS Data Collection: - PDI(ZNET0032). If the IBM Tivoli NetView started task(s) is (are) defined in the TSS STC record, this is not a finding. Fix_Text The IBM Tivoli NetView systems programmer and the ISSO will ensure that a product's started task(s) is (are) properly identified and/or defined to the system ACP. A unique ACID must be assigned for the IBM Tivoli NetView started task(s) through a corresponding STC table entry. The following sample set of commands is shown here as a guideline: TSS ADD(STC) PROCNAME(CNMPROC) ACID(CNMPROC) TSS ADD(STC) PROCNAME(CNMPSSI) ACID(CNMPSSI) Not_Reviewed Vuln_Num V-225586 Rule_ID SV-225586r1146124_rule Severity medium Rule_Title NetView is not properly defined to the Facility Matrix Table for Top Secret. Vuln_Discuss Improperly defined security controls for the Product could result in the compromise of the network, operating system, and customer data. Check_Content Refer to the following reports produced by the TSS Data Collection: - TSSCMDS.RPT(FACLIST) - Preferred report containing all control option values in effect including default values. - TSSCMDS.RPT(TSSPRMFL) - Alternate report containing only control option values explicitly coded at TSS startup. If the NETVIEW Facility Matrix table is defined as stated below, this is not a finding. FACILITY(USERxx=NAME=NETVIEW) FACILITY(NETVIEW=MODE=FAIL) FACILITY(NETVIEW=PGM=DSI) FACILITY(NETVIEW=ACTIVE,SHRPRF,ASUBM,ABEND,MULTIUSER,NOXDEF) FACILITY(NETVIEW=LUMSG,STMSG,SIGN(M),INSTDATA,NORNDPW,AUTHINIT) FACILITY(NETVIEW=NOPROMPT,NOAUDIT,RES,WARNPW,NOTSOC,LCFTRANS,IJU) FACILITY(NETVIEW=MSGLC,NOTRACE,NOEODINIT,NODORMPW,NONPWR) FACILITY(NETVIEW=LOG(INIT,SMF,MSG,SEC9)) FACILITY(NETVIEW=DOWN=GLOBAL,LOCKTIME=00,DEFACID(*NONE*)) Fix_Text Define NETVIEW as a Facility to TOP SECRET in the Facility Matrix Table using the following example: **** NETVIEW * FACILITY(USERxx=NAME=NETVIEW) FACILITY(NETVIEW=MODE=FAIL) FACILITY(NETVIEW=PGM=DSI) FACILITY(NETVIEW=ACTIVE,SHRPRF,ASUBM,ABEND,MULTIUSER,NOXDEF) FACILITY(NETVIEW=LUMSG,STMSG,SIGN(M),INSTDATA,NORNDPW,AUTHINIT) FACILITY(NETVIEW=NOPROMPT,NOAUDIT,RES,WARNPW,NOTSOC,LCFTRANS,IJU) FACILITY(NETVIEW=MSGLC,NOTRACE,NOEODINIT,NODORMPW,NONPWR) FACILITY(NETVIEW=LOG(INIT,SMF,MSG,SEC9)) FACILITY(NETVIEW=DOWN=GLOBAL,LOCKTIME=00,DEFACID(*NONE*)) Not_Reviewed