Storage / Object / Controls / DEV
Block Public Access by Default
CCC.ObjStor.CN09 · Access
Ensure that all buckets and objects are protected from public (unauthenticated or anonymous) access by default, requiring explicit and auditable action to override.
Related Capabilities
| ID | Title | Description |
|---|
| CCC.Core.CP06 | Access Control | The service automatically enforces user configurations to restrict or allow access to a specific component or a child resource based on factors such as user identities, roles, groups, or attributes. |
| CCC.Core.CP29 | Active Ingestion | While running, the service itself can fetch or reach out to some other service or external source to get data, inputs or commands for the service to process or operate on. |
Related Threats
| ID | Title | Description |
|---|
| CCC.Core.TH01 | Access is Granted to Unauthorized Users | Logic designed to give different permissions to different entities may be misconfigured or manipulated, allowing unauthorized entities to access restricted parts of the service, its data, or its child resources. This could result in a loss of data confidentiality or tolerance of unauthorized actions which impact the integrity and availability of resources and data. |
Assessment Requirements
| ID | Text | Applicability |
|---|
| CCC.ObjStor.CN09.AR01 | When a bucket is created, the service MUST enable a public access block that prevents any policy or ACL from granting public access to the bucket or its objects. | tlp-clear, tlp-green, tlp-amber, tlp-red |
| CCC.ObjStor.CN09.AR02 | When an attempt is made to modify a bucket policy or ACL to grant public access, the service MUST deny the modification unless the public access block has been explicitly disabled. | tlp-clear, tlp-green, tlp-amber, tlp-red |
| CCC.ObjStor.CN09.AR03 | When an attempt is made to disable the public access block, the service MUST require explicit approval from an identity with elevated privileges and MUST publish an auditable event to a monitored channel. | tlp-green, tlp-amber, tlp-red |
| CCC.ObjStor.CN09.AR04 | When the public access block is disabled, the service MUST NOT permit disabling for any bucket containing objects classified at TLP:AMBER or TLP:RED. | tlp-amber, tlp-red |
Guideline Mappings
| Framework | ID | Remarks |
|---|
| CCM | DSP-07 | Data Protection by Design and Default |
| CCM | DSP-17 | Sensitive Data Protection |
| CCM | IAM-01 | IAM Policy and Procedures |