CIS Red Hat OpenShift Container Platform 4 Benchmark
Rules and Groups employed by this XCCDF Profile
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Kubernetes Settings
Each section of this configuration guide includes information about the configuration of a Kubernetes cluster and a set of recommendations for hard...Group -
OpenShift etcd Settings
Contains rules that check correct OpenShift etcd settings.Group -
Configure A Unique CA Certificate for etcd
A unique CA certificate should be created for <code>etcd</code>. OpenShift by default creates separate PKIs for etcd and the Kubernetes API server...Rule Medium Severity -
Kubernetes Kubelet Settings
The Kubernetes Kubelet is an agent that runs on each node in the cluster. It makes sure that containers are running in a pod. The kubelet takes a ...Group -
Disable Anonymous Authentication to the Kubelet
By default, anonymous access to the Kubelet server is enabled. This configuration check ensures that anonymous requests to the Kubelet server are d...Rule Medium Severity -
Ensure authorization is set to Webhook
Unauthenticated/unauthorized users should have no access to OpenShift nodes. The Kubelet should be set to only allow Webhook authorization. To ensu...Rule Medium Severity -
kubelet - Configure the Client CA Certificate
By default, the kubelet is not configured with a CA certificate which can subject the kubelet to man-in-the-middle attacks. To configure a client ...Rule Medium Severity -
Kubelet - Ensure Event Creation Is Configured
Security relevant information should be captured. The eventRecordQPS Kubelet option can be used to limit the rate at which events are gathered. Set...Rule Medium Severity -
Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers
Ensure that the Kubelet is configured to only use strong cryptographic ciphers. To set the cipher suites for the kubelet, create new or modify exis...Rule Medium Severity -
kubelet - Enable Certificate Rotation
To enable the kubelet to rotate client certificates, edit the kubelet configuration file <code>/etc/kubernetes/kubelet.conf</code> on the kubelet n...Rule Medium Severity -
kubelet - Enable Client Certificate Rotation
To enable the kubelet to rotate client certificates, edit the kubelet configuration file <code>/etc/kubernetes/kubelet.conf</code> on the kubelet n...Rule Medium Severity -
kubelet - Allow Automatic Firewall Configuration
The kubelet has the ability to automatically configure the firewall to allow the containers required ports and connections to networking resources ...Rule Medium Severity -
kubelet - Enable Server Certificate Rotation
To enable the kubelet to rotate server certificates, edit the kubelet configuration file <code>/etc/kubernetes/kubelet.conf</code> on the kubelet n...Rule Medium Severity -
kubelet - Do Not Disable Streaming Timeouts
Timouts for streaming connections should not be disabled as they help to prevent denial-of-service attacks. To configure streaming connection timeo...Rule Medium Severity -
Ensure Eviction threshold Settings Are Set - evictionHard: imagefs.available
<p>Two types of garbage collection are performed on an OpenShift Container Platform node:</p> <ul> <li...Rule Medium Severity -
Ensure Eviction threshold Settings Are Set - evictionHard: memory.available
<p>Two types of garbage collection are performed on an OpenShift Container Platform node:</p> <ul> <li...Rule Medium Severity -
Ensure Eviction threshold Settings Are Set - evictionHard: nodefs.available
<p>Two types of garbage collection are performed on an OpenShift Container Platform node:</p> <ul> <li...Rule Medium Severity -
Ensure Eviction threshold Settings Are Set - evictionHard: nodefs.inodesFree
<p>Two types of garbage collection are performed on an OpenShift Container Platform node:</p> <ul> <li...Rule Medium Severity -
OpenShift - Master Node Settings
Contains evaluations for the master node configuration settings.Group -
Verify Group Who Owns The OpenShift Container Network Interface Files
To properly set the group owner of/etc/cni/net.d/*, run the command:$ sudo chgrp root /etc/cni/net.d/*
Rule Medium Severity -
Verify Group Who Owns The OpenShift Controller Manager Kubeconfig File
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconf...Rule Medium Severity -
Verify Group Who Owns The Etcd Database Directory
To properly set the group owner of/var/lib/etcd/member/, run the command:$ sudo chgrp root /var/lib/etcd/member/
Rule Medium Severity -
Verify Group Who Owns The Etcd Write-Ahead-Log Files
To properly set the group owner of/var/lib/etcd/member/wal/*, run the command:$ sudo chgrp root /var/lib/etcd/member/wal/*
Rule Medium Severity -
Verify Group Who Owns The etcd Member Pod Specification File
To properly set the group owner of <code>/etc/kubernetes/manifests/etcd-pod.yaml</code>, run the command: <pre>$ sudo chgrp root /etc/kubernetes/m...Rule Medium Severity -
Verify Group Who Owns The Etcd PKI Certificate Files
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/*/*/*/*.crt</code>, run the command: <pre>$ sudo chgrp root /etc/kub...Rule Medium Severity -
Verify Group Who Owns The OpenShift SDN Container Network Interface Plugin IP Address Allocations
To properly set the group owner of <code>/var/lib/cni/networks/openshift-sdn/.*</code>, run the command: <pre>$ sudo chgrp root /var/lib/cni/netwo...Rule Medium Severity -
Verify Group Who Owns The Kubernetes API Server Pod Specification File
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml</code>, run the command...Rule Medium Severity -
Verify Group Who Owns The Kubernetes Controller Manager Pod Specification File
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml</code...Rule Medium Severity -
Verify Group Who Owns The Kubernetes Scheduler Pod Specification File
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml</code>, run the command...Rule Medium Severity -
Verify Group Who Owns The OpenShift Admin Kubeconfig Files
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig</code>, r...Rule Medium Severity -
Verify Group Who Owns The OpenShift Multus Container Network Interface Plugin Files
To properly set the group owner of <code>/var/run/multus/cni/net.d/*</code>, run the command: <pre>$ sudo chgrp root /var/run/multus/cni/net.d/*</...Rule Medium Severity -
Verify Group Who Owns The OpenShift PKI Certificate Files
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/*/*/*/tls.crt</code>, run the command: <pre>$ sudo chgrp root /etc/k...Rule Medium Severity -
Verify Group Who Owns The OpenShift PKI Private Key Files
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/*/*/*/*.key</code>, run the command: <pre>$ sudo chgrp root /etc/kub...Rule Medium Severity -
Verify Group Who Owns The OpenShift SDN CNI Server Config
To properly set the group owner of <code>/var/run/openshift-sdn/cniserver/config.json</code>, run the command: <pre>$ sudo chgrp root /var/run/ope...Rule Medium Severity -
Verify Group Who Owns The OVNKubernetes Socket
To properly set the group owner of <code>/run/ovn-kubernetes/cni/ovn-cni-server.sock</code>, run the command: <pre>$ sudo chgrp root /run/ovn-kube...Rule Medium Severity -
Verify Group Who Owns The OVNKubernetes DB files
To properly set the group owner of/var/lib/ovn/etc/*.db, run the command:$ sudo chgrp root /var/lib/ovn/etc/*.db
Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Configuration Database
Check if the group owner of <code>/etc/openvswitch/conf.db</code> is <code>hugetlbfs</code> on architectures other than s390x or <code>openvswitch<...Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Configuration Database Lock
Check if the group owner of <code>/etc/openvswitch/conf.db.~lock~</code> is <code>hugetlbfs</code> on architectures other than s390x or <code>openv...Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Process ID File
Ensure that the file <pre>/var/run/openvswitch/ovs-vswitchd.pid</pre>, is owned by the group <pre>openvswitch</pre> or <pre>hugetlbfs</pre>, depend...Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Persistent System ID
Check if the group owner of <code>/etc/openvswitch/system-id.conf</code> is <code>hugetlbfs</code> on architectures other than s390x or <code>openv...Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Daemon PID File
Ensure that the file <pre>/run/openvswitch/ovs-vswitchd.pid</pre>, is owned by the group <pre>openvswitch</pre> or <pre>hugetlbfs</pre>, depending ...Rule Medium Severity -
Verify Group Who Owns The Open vSwitch Database Server PID
Ensure that the file <pre>/run/openvswitch/ovsdb-server.pid</pre>, is owned by the group <pre>openvswitch</pre> or <pre>hugetlbfs</pre>, depending ...Rule Medium Severity -
Verify Group Who Owns The Kubernetes Scheduler Kubeconfig File
To properly set the group owner of <code>/etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig</cod...Rule Medium Severity -
Verify User Who Owns The OpenShift Container Network Interface Files
To properly set the owner of/etc/cni/net.d/*, run the command:$ sudo chown root /etc/cni/net.d/*
Rule Medium Severity -
Verify User Who Owns The OpenShift Controller Manager Kubeconfig File
To properly set the owner of <code>/etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kub...Rule Medium Severity -
Verify User Who Owns The Etcd Database Directory
To properly set the owner of/var/lib/etcd/member/, run the command:$ sudo chown root /var/lib/etcd/member/
Rule Medium Severity -
Verify User Who Owns The Etcd Write-Ahead-Log Files
To properly set the owner of/var/lib/etcd/member/wal/*, run the command:$ sudo chown root /var/lib/etcd/member/wal/*
Rule Medium Severity -
Verify User Who Owns The Etcd Member Pod Specification File
To properly set the owner of <code>/etc/kubernetes/manifests/etcd-pod.yaml</code>, run the command: <pre>$ sudo chown root /etc/kubernetes/manifes...Rule Medium Severity -
Verify User Who Owns The Etcd PKI Certificate Files
To properly set the owner of <code>/etc/kubernetes/static-pod-resources/*/*/*/*.crt</code>, run the command: <pre>$ sudo chown root /etc/kubernete...Rule Medium Severity -
Verify User Who Owns The OpenShift SDN Container Network Interface Plugin IP Address Allocations
To properly set the owner of <code>/var/lib/cni/networks/openshift-sdn/.*</code>, run the command: <pre>$ sudo chown root /var/lib/cni/networks/op...Rule Medium Severity
Node 2
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