From z/OS TSS STIG
Part of ACP00260
Associated with: CCI-000213 CCI-002234
Access to memory and privileged program dumps running Trusted Control Block (TCB) key 0-7 may hold passwords, encryption keys, or other sensitive data that must not be made available. Failure to properly control access to these facilities could result in unauthorized personnel modifying sensitive z/OS lists. This exposure may threaten the integrity and availability of the operating system environment, and compromise the confidentiality of customer data.
From a command input screen enter: TSS WHOH IBMFAC(IEAABD.) Alternately, this can be viewed by following steps: Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(ACP00260) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ACP00260) Ensure that the Memory and privileged program dumps resources are properly protected as stated below. If all of the following guidance is true, this is not a finding. ___ Ensure the DEFPROT attribute is specified for the IBMFAC resource class in the RDT and/or that IEAABD. resource and/or generic equivalent is owned. Access will not be given to any user. ___ Ensure that the IEAABD.DMPAUTH. resource and/or generic equivalent access of READ is limited to authorized users. ___ Ensure that the IEAABD.DMPAUTH. resource and/or generic equivalent UPDATE or greater access is restricted to only systems personnel and that all access is logged. ___ Ensure that IEAABD.DMPAKEY. resource and/or generic equivalent specifies that all access is restricted to systems personnel and that all access is logged.
Memory and privileged program dump resources are provided via resources in the IBMFAC resource class. Ensure that the following are properly specified in the ACP. (Note: The resources and/or resource prefixes identified below are examples of a possible installation. The actual 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.) Below is listed the access requirements for memory and privileged program dump resources. Ensure the guidelines for the resource type, resources, and/or generic equivalent are followed. When protecting the facilities for dumps lists via the FACILITY resource class, ensure that the following items are in effect: IEAABD. IEAABD.DMPAUTH. IEAABD.DMPAKEY. If DEFPROT is specified in the IBMFAC RDT the following command examples are not required. To prevent access to these resources, the program dump resources and/or generic equivalent are protected using the following command. Example: TSS ADDTO(deptacid) IBMFAC(IEAABD.) Ensure that no access is given to IEAABD. resource. IEAABD.DMPAUTH. READ access is limited to authorized users that have a valid job duties requirement for access. UPDATE access will be restricted to system programming personnel and access will be logged. Example: TSS PERMIT(authusers) IBMFAC(IEAABD.DMPAUTH.) ACCESS(READ) TSS PERMIT(syspaudt) IBMFAC(IEAABD.DMPAUTH.) ACCESS(UPDATE) ACTION(AUDIT) IEAABD.DMPAKEY. access will be restricted to system programming personnel and access will be logged. Example: TSS PERMIT(syspaudt) IBMFAC(IEAABD.DMPAKEY.) ACCESS(READ) ACTION(AUDIT)
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