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2.3 Ensure that the --auto-tls argument is not set to true

Information

Do not use self-signed certificates for TLS.

etcd is a highly-available key value store used by Kubernetes deployments for persistent storage of all of its REST API objects. These objects are sensitive in nature and should not be available to unauthenticated clients. You should enable the client authentication via valid certificates to secure the access to the etcd service.

Solution

Edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml on the master node and either remove the --auto-tls parameter or set it to false.

--auto-tls=false

Impact:

Clients will not be able to use self-signed certificates for TLS.

See Also

https://workbench.cisecurity.org/benchmarks/26831

Item Details

Category: IDENTIFICATION AND AUTHENTICATION, SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|IA-5(1), 800-53|SC-28, 800-53|SC-28(1), CSCv7|14.4

Plugin: Unix

Control ID: 670da7230024a681c0d77c9f01af96ceaf0baea145769ec402c3381da17d28d9