cyberstrikeus 1.1.11 Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)
Profile Applicability
- Level 1 - Master Node
Description
Ensure that the etcd data directory has permissions of 700 or more restrictive.
Rationale
etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes. It should not be readable or writable by any group members or the world.
Impact
None
Audit
On the etcd server node, get the etcd data directory, passed as an argument --data-dir, from the below command:
ps -ef | grep etcd
Run the below command (based on the etcd data directory found above). For example,
stat -c %a /var/lib/etcd
Verify that the permissions are 700 or more restrictive.
Remediation
On the etcd server node, get the etcd data directory, passed as an argument --data-dir, from the below command:
ps -ef | grep etcd
Run the below command (based on the etcd data directory found above). For example,
chmod 700 /var/lib/etcd
Default Value
By default, etcd data directory has permissions of 755.
References
- https://coreos.com/etcd/docs/latest/op-guide/configuration.html#data-dir
- https://kubernetes.io/docs/admin/etcd/
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 3.3 Configure Data Access Control Lists | * | * | * |
| v7 | 14.6 Protect Information through Access Control Lists | * | * | * |