CNTR-K8-000190 - The Kubernetes etcd must use TLS to protect the confidentiality of sensitive data during electronic dissemination.

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Information

The Kubernetes API Server will prohibit the use of SSL and unauthorized versions of TLS protocols to properly secure communication.

The use of unsupported protocol exposes vulnerabilities to the Kubernetes by rogue traffic interceptions, man-in-the-middle attacks, and impersonation of users or services from the container platform runtime, registry, and keystore. To enable the minimum version of TLS to be used by the Kubernetes API Server, the setting 'peer-auto-tls' must be set.

Solution

Edit the Kubernetes etcd manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Master Node. Set the value of 'peer-auto-tls' to 'false'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Kubernetes_V1R5_STIG.zip

Item Details

References: CAT|II, CCI|CCI-000068, Rule-ID|SV-242380r754800_rule, STIG-ID|CNTR-K8-000190, Vuln-ID|V-242380

Plugin: Unix

Control ID: 17852a358e0b4f378cb4e83567c1a2419c62f4c5b5f9483936e23572239a9b07