During installation of an OpenShift 4 cluster, the openshift-install command line tool creates an auth directory, with kubeconfig and kubeadmin-password files. Both files contain credentials used to authenticate to the OpenShift API server, and are incorrectly assigned word-readable permissions.

In contrast, the oc command line tool creates configuration files that are only readable by the current user.

A flaw was found in atomic-openshift of openshift-4.2 where the basic-user RABC role in OpenShift Container Platform doesn't sufficiently protect the GlusterFS StorageClass against leaking of the restuserkey. An attacker with basic-user permissions is able to obtain the value of restuserkey, and use it to authenticate to the GlusterFS REST service, gaining access to read, and modify files.