Check: ACF2-ES-000110
IBM z/OS ACF2 STIG:
ACF2-ES-000110
(in versions v8 r2 through v7 r1)
Title
CA-ACF2 must limit update and allocate access to system backup files to system programmers and/or batch jobs that perform DASD backups. (Cat II impact)
Discussion
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. 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.
Check Content
Execute a data set list of access for SMF data collection files (e.g., SYS1.MAN* or IFASMF.SYS1.*). If the ESM data set rules for the SMF data collection files do not restrict ALTER access to only z/OS systems programming personnel, this is a finding.
Fix Text
Configure the update and allocate access to libraries containing PPT modules to be limited to system programmers only and all update and allocate access is logged.
Additional Identifiers
Rule ID: SV-223432r533198_rule
Vulnerability ID: V-223432
Group Title: SRG-OS-000080-GPOS-00048
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000213 |
The information system enforces approved authorizations for logical access to information and system resources in accordance with applicable access control policies. |
Controls
Number | Title |
---|---|
AC-3 |
Access Enforcement |