Etcd data directory should have permissions of 700 or more restrictive
Set up the kubernetes integration.
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.
Audit
On the etcd server node, get the etcd data directory passed as an argument --data-dir, from the command:
Based on the etcd data directory found above, run the command:
Verify the permissions are 700 or more restrictive.
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 command (based on the etcd data directory found above): chmod 700 /var/lib/etcd
Impact
None
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
Version 6
14 Controlled Access Based on the Need to Know
Version 7
5.2 Maintain Secure Images - Maintain secure images or templates for all systems in the enterprise based on the organization’s approved configuration standards. Any new system deployment or existing system that becomes compromised should be imaged using one of those images or templates.
