Ensure that objects cannot be transitioned to storage classes with lower durability or availability guarantees without explicit authorization, preventing degradation of data resilience through misconfigured lifecycle policies or unauthorized actions.
Restrict Storage Class Transitions to Approved Tiers
CCC.ObjStor.CN10 · Data
Related Capabilities
| ID | Title | Description |
|---|---|---|
| CCC.ObjStor.CP08 | Lifecycle Policies | Supports defining policies to automate data management tasks, especially those related to cost management. |
| CCC.ObjStor.CP12 | Storage Classes | Provides different storage classes for frequently and infrequently accessed objects. |
| CCC.Core.CP11 | Backup | The service can generate copies of its data or configurations in the form of automated backups, snapshot-based backups, or incremental backups. |
| CCC.Core.CP18 | Resource Versioning | The service automatically assigns versions to child resources which can be used to preserve, retrieve, and restore past iterations. |
Related Threats
| ID | Title | Description |
|---|---|---|
| CCC.ObjStor.TH03 | Storage Class Downgrade Leading to Durability or Availability Loss | An authorized entity or misconfigured lifecycle policy may transition objects from a high-durability or high-availability storage class to a lower-durability or single-zone class. This degradation manifests only when a subsequent failure occurs (e.g., availability zone outage). Objects may also be transitioned to archival tiers, rendering them effectively inaccessible for extended retrieval periods during incidents. |
| CCC.Core.TH06 | Data is Lost or Corrupted | Services that rely on accurate data are susceptible to disruption in the event of data loss or corruption. Any actions that lead to the unintended deletion, alteration, or limited access to data can impact the availability of the service and the system it is part of. |
Assessment Requirements
| ID | Text | Applicability |
|---|---|---|
| CCC.ObjStor.CN10.AR01 | When a lifecycle policy is configured to transition objects to a different storage class, the service MUST prevent transitions to any storage class not included in an organization-defined list of approved tiers. | tlp-green, tlp-amber, tlp-red |
| CCC.ObjStor.CN10.AR02 | When a manual request is made to change an object's storage class to a tier with lower durability or availability, the service MUST require explicit approval from an identity with elevated privileges. | tlp-amber, tlp-red |
| CCC.ObjStor.CN10.AR03 | When a storage class transition occurs, the service MUST publish an auditable log entry including the identity that initiated the transition, the source and destination classes, and the affected objects. | tlp-green, tlp-amber, tlp-red |