Check: ACF0790
zOS ACF2 STIG:
ACF0790
(in versions v6 r43 through v6 r30)
Title
Procedures are not in place to ensure all LOGONIDs with the READALL attribute are used and controlled. (Cat II impact)
Discussion
READALL allows the individual to view any file and violates the principle of least privilege. This could result in the compromise of the confidentiality of customer data.
Check Content
a) Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ATTREDAL) b) If procedures are in place to ensure logonids with the READALL attribute are used and controlled in accordance with the DISA requirements, there is NO FINDING. c) If procedures are not in place to ensure logonids with the READALL attribute are used and controlled in accordance with the DISA requirements, this is a FINDING.
Fix Text
The IAO will ensure that procedures are in place to control Logonids with the READALL attribute. The READALL privilege is available for actual auditing of system data. It gives the capability of looking at every data set on the system despite the data set rules. Its use is strongly discouraged. Always grant access through the use of standard data set access rules. Under no circumstances will the privilege be used as a convenience to the person maintaining the rule sets. Only use this privilege when absolutely necessary, and only give it to auditors. Remove the privilege once the audit is complete. Fully document the granting and revoking of the access.
Additional Identifiers
Rule ID: SV-175r2_rule
Vulnerability ID: V-175
Group Title: ACF0790
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000035 |
The information system provides the capability for privileged administrators to configure the organization-defined security policy filters to support different security policies. |
| CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |