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The Kubernetes etcd must have file permissions set to 644 or more restrictive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-242459 | CNTR-K8-003260 | SV-242459r712733_rule | Medium |
| Description |
|---|
| The Kubernetes etcd key-value store provides a way to store data to the Master Node. If these files can be changed, data to API object and master node would be compromised. |
| STIG | Date |
|---|---|
| Kubernetes Security Technical Implementation Guide | 2021-06-17 |
Details
| Check Text ( C-45734r712731_chk ) |
|---|
| Review the permissions of the Kubernetes etcd by using the command: stat -c %a /var/lib/etcd/* If any of the files are have permissions more permissive than "644", this is a finding. |
| Fix Text (F-45692r712732_fix) |
|---|
| Change the permissions of the manifest files to "644" by executing the command: chmod 644/var/lib/etcd/* |