cyberstrikeus CIS Kubernetes Benchmark v1.11.1 - Control 1.1.12
Profile Applicability
- Level: 1 - Master Node
Description
Ensure that the etcd data directory ownership is set to etcd:etcd.
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 be owned by etcd:etcd.
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 %U:%G /var/lib/etcd
Verify that the ownership is set to etcd:etcd.
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,
chown etcd:etcd /var/lib/etcd
Default Value
By default, etcd data directory ownership is set to etcd:etcd.
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 ListsConfigure data access control lists based on a user's need to know. Apply data access control lists, also known as access permissions, to local and remote file systems, databases, and applications. | ● | ● | ● |
| v7 | 16 Account Monitoring and ControlAccount Monitoring and Control |