RDS cluster snapshots should not be shared with external accounts
Description
This rule evaluates whether Amazon RDS cluster snapshots are shared with external AWS accounts that are not onboarded to Datadog. RDS cluster snapshots contain complete copies of database clusters, including all data, configurations, and potentially sensitive information. Sharing cluster snapshots with unauthorized external accounts can lead to data exposure and security risks.
The data contained in the db_cluster_snapshot_attributes_result.db_cluster_snapshot_attributes field is enumerated to identify which AWS accounts have access to restore from the snapshot.
The control fails if any account present is not onboarded to Datadog.
Note: If the RDS cluster snapshot is shared with a trusted third-party AWS account that you cannot onboard to Datadog, mute the finding and leave a comment documenting the justification.
To remove external account sharing permissions from Amazon RDS cluster snapshots, follow the steps outlined in the Sharing a DB cluster snapshot for Amazon RDS section of the Amazon RDS User Guide. For guidance regarding onboarding AWS accounts to Datadog, follow the Datadog AWS integration documentation to onboard the account. Ensure that resource collection and Cloud Security are correctly configured.
