IBM z/OS TSS STIG Version Comparison

There are 9 differences between versions v9 r5 (July 2, 2025) (the "left" version) and v9 r7 (Jan. 5, 2026) (the "right" version).

Check TSS0-ES-000430 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.

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Title

CA-TSS must protect memory and privileged program dumps in accordance with proper security requirements.

Check Content

If From the ISPF Command Screen, enter: TSS WHOHAS IBMFAC(IEAABD) If the IEAABD. resource and/or generic equivalent is defined with no access and all access logged, this is not a finding. If the IEAABD.DMPAUTH. resource and/or generic equivalent is defined with READ access limited to authorized users, this is not a finding. If the IEAABD.DMPAUTH. resource and/or generic equivalent UPDATE or greater access is restricted to only systems personnel and all access is logged, this is not a finding. If the IEAABD.DMPAKEY resource and/or generic equivalent is defined and all access is restricted to systems personnel and that all access is logged, this is not a finding.

Discussion

Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system.

Fix

Memory and privileged program dump resources are provided via resources in the FACILITY resource class. Ensure that the following are properly specified in the ESM. (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 specific.) The is listed the access requirements for memory and privileged program dump resources. resources are listed below. 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. The effect: IEAABD. IEAABD.DMPAUTH. IEAABD.DMPAKEY. If RACF resource rules for 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.) IEAABD.DMPAUTH. specify UACC(NONE) and NOWARNING. Ensure that no access is given to IEAABD. resource. Example RDEF FACILITY IEAABD.** UACC(NONE) OWNER(owner group) AUDIT(ALL(READ)) 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: RDEF logged. Example: TSS FACILITY IEAABD.DMPAUTH.** UACC(NONE) OWNER(owner group) AUDIT(ALL(UPDATE)) PERMIT IEAABD.DMPAUTH.** CLASS(FACILITY) ID(authusers) PERMIT(authusers) IBMFAC(IEAABD.DMPAUTH.) ACCESS(READ) PERMIT ACCESS(READ) TSS PERMIT(syspaudt) IEAABD.DMPAUTH.** IBMFAC(IEAABD.DMPAUTH.) ACCESS(UPDATE) CLASS(FACILITY) ID(syspsmpl) ACCESS(UPDATE) IEAABD.DMPAKEY. ACTION(AUDIT) IEAABD.DMPAKEY. access will be restricted to system programming personnel and access will be logged. Example: RDEF logged. Example: TSS FACILITY PERMIT(syspaudt) IEAABD.DMPAKEY.** IBMFAC(IEAABD.DMPAKEY.) UACC(NONE) OWNER(owner group) AUDIT(ALL(READ)) PERMIT IEAABD.DMPAKEY.** CLASS(FACILITY) ID(syspsmpl) ACCESS(READ) ACTION(AUDIT)