RKE 0.3.1 - Kubernetes v1.15.4
https://github.com/rancher/rancher/releases/tag/v2.3.1
CVE-2019-11253
https://groups.google.com/forum/m/#!topic/kubernetes-announce/_a6vYXOzBVw
CVE-2019-16276
https://groups.google.com/forum/#!msg/kubernetes-security-announce/PtsUCqFi4h4/Su9Qg5TaBwAJ
This release comes with the latest Kubernetes versions, i.e. v1.13.12, v1.14.8, v1.15.5, for Rancher launched Kubernetes clusters to address the CVE-2019-11253 and CVE-2019-16276. Rancher recommends upgrading all Kubernetes clusters to these Kubernetes versions.