Transparent Data Migration Facility (TDMF) installation datasets will be not properly protected.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-224348	SRG-OS-000080	ZTDMA000	SV-224348r1141657_rule	2025-09-26	7

Description
Transparent Data Migration Facility (TDMF) installation datasets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these datasets could result in violating the integrity of the base product which could result in compromising the operating system or sensitive data.

ℹ️ Check
Refer to the following report produced by the dataset and Resource Data Collection: - SENSITVE.RPT(TDMFRPT). Automated Analysis Refer to the following report produced by the dataset and Resource Data Collection: - PDI(ZTDM0000). Verify that the accesses to the Transparent Data Migration Facility (TDMF) installation datasets are properly restricted. If the following guidance is true, this is not a finding. The ACF2 dataset rules for the datasets restrict READ access to auditors. The ACF2 dataset rules for the datasets restrict WRITE and/or greater access to systems programming personnel. The ACF2 dataset rules for the datasets specify that all (i.e., failures and successes) WRITE and/or greater access is logged.

ℹ️ Check

Refer to the following report produced by the dataset and Resource Data Collection: - SENSITVE.RPT(TDMFRPT). Automated Analysis Refer to the following report produced by the dataset and Resource Data Collection: - PDI(ZTDM0000). Verify that the accesses to the Transparent Data Migration Facility (TDMF) installation datasets are properly restricted. If the following guidance is true, this is not a finding. The ACF2 dataset rules for the datasets restrict READ access to auditors. The ACF2 dataset rules for the datasets restrict WRITE and/or greater access to systems programming personnel. The ACF2 dataset rules for the datasets specify that all (i.e., failures and successes) WRITE and/or greater access is logged.

✔️ Fix
The ISSO will ensure that The ISSO will ensure that WRITE and/or greater access to Transparent Data Migration Facility (TDMF) installation datasets is limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to auditors. The installing systems programmer will identify and document the product datasets, 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 datasets, and once documented will work with the ISSO to ensure that they are properly restricted to the ACP (Access Control Program) active on the system. Datasets to be protected will be: SYS2.TDMF SYS3.TDMF The following commands are provided as a sample for implementing dataset controls: $KEY(SYS2) TDMF.- UID(<syspaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<tstcaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<audtaudt>) R(A) E(A) $KEY(SYS3) TDMF.- UID(<syspaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<tstcaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<audtaudt>) R(A) E(A)

✔️ Fix

The ISSO will ensure that The ISSO will ensure that WRITE and/or greater access to Transparent Data Migration Facility (TDMF) installation datasets is limited to systems programmers only, and all WRITE and/or greater access is logged. READ access can be given to auditors. The installing systems programmer will identify and document the product datasets, 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 datasets, and once documented will work with the ISSO to ensure that they are properly restricted to the ACP (Access Control Program) active on the system. Datasets to be protected will be: SYS2.TDMF SYS3.TDMF The following commands are provided as a sample for implementing dataset controls: $KEY(SYS2) TDMF.- UID(<syspaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<tstcaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<audtaudt>) R(A) E(A) $KEY(SYS3) TDMF.- UID(<syspaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<tstcaudt>) R(A) W(L) A(L) E(A) TDMF.- UID(<audtaudt>) R(A) E(A)