Guide to the Secure Configuration of Red Hat OpenShift Container Platform 4
Rules, Groups, and Values defined within the XCCDF Benchmark
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Configure the etcd Certificate Key for the API Server
To ensure etcd is configured to make use of TLS encryption for client communications, follow the OpenShift documentation and setup the TLS connection between the API Server and etcd. Then, verify t...Rule Medium Severity -
Ensure that the --kubelet-https argument is set to true
The kube-apiserver ensures https to the kubelet by default. The apiserver flag "--kubelet-https" is deprecated and should be either set to "true" or omitted from the argument list.Rule Medium Severity -
Disable Use of the Insecure Bind Address
OpenShift should not bind to non-loopback insecure addresses. Edit the <code>openshift-kube-apiserver</code> configmap and remove the <code>insecure-bind-address</code> if it exists: <pre> "apiServ...Rule Medium Severity -
Profiling is protected by RBAC
Ensure that the cluster-debugger cluster role includes the /metrics resource URL. This demonstrates that profiling is protected by RBAC, with a specific cluster role to allow access.Rule Medium Severity -
Configure the kubelet Certificate Authority for the API Server
To ensure OpenShift verifies kubelet certificates before establishing connections, follow the OpenShift documentation and setup the TLS connection between the API Server and kubelets. Edit the <co...Rule High Severity -
Configure the kubelet Certificate File for the API Server
To enable certificate based kubelet authentication, edit the <code>config</code> configmap in the <code>openshift-kube-apiserver</code> namespace and set the below parameter in the <code>config.yam...Rule High Severity -
Configure the kubelet Certificate File for the API Server
To enable certificate based kubelet authentication, edit the <code>config</code> configmap in the <code>openshift-kube-apiserver</code> namespace and set the below parameter in the <code>config.yam...Rule High Severity -
Configure the kubelet Certificate Key for the API Server
To enable certificate based kubelet authentication, edit the <code>config</code> configmap in the <code>openshift-kube-apiserver</code> namespace and set the below parameter in the <code>config.yam...Rule High Severity -
Configure the kubelet Certificate Key for the API Server
To enable certificate based kubelet authentication, edit the <code>config</code> configmap in the <code>openshift-kube-apiserver</code> namespace and set the below parameter in the <code>config.yam...Rule High Severity -
Ensure all admission control plugins are enabled
To make sure none of them is explicitly disabled except PodSecurity, run the following command: <pre>$ oc -n openshift-kube-apiserver get configmap config -o json | jq -r '[.data."config.yaml" | fr...Rule Medium Severity -
Ensure the openshift-oauth-apiserver service uses TLS
By default, the OpenShift OAuth API Server uses TLS. HTTPS should be used for connections between openshift-oauth-apiserver and kube-apiserver. By default, the OpenShift OAuth API Server uses Inter...Rule Medium Severity -
OAuth Token Inactivity Timeout
Enter OAuth Token Inactivity TimeoutValue -
Ensure that the service-account-lookup argument is set to true
Validate service account before validating token.Rule Medium Severity -
Configure the Service Account Public Key for the API Server
To ensure the API Server utilizes its own key pair, edit the <code>openshift-kube-apiserver</code> configmap and set the <code>serviceAccountPublicKeyFiles</code> parameter to the public key file f...Rule Medium Severity -
Configure the Certificate for the API Server
To ensure the API Server utilizes its own TLS certificates, the <code>tls-cert-file</code> must be configured. Verify that the <code>apiServerArguments</code> section has the <code>tls-cert-file</c...Rule Medium Severity -
Use Strong Cryptographic Ciphers on the API Server
To ensure that the API Server is configured to only use strong cryptographic ciphers, verify the <code>openshift-kube-apiserver</code> configmap contains the following set of ciphers, with no addit...Rule Medium Severity -
Configure the Certificate Key for the API Server
To ensure the API Server utilizes its own TLS certificates, the <code>tls-private-key-file</code> must be configured. Verify that the <code>apiServerArguments</code> section has the <code>tls-priva...Rule Medium Severity -
Ensure custom tlsSecurityProfile configured for APIServer uses secure TLS version
The configuration <code>tlsSecurityProfile</code> specifies TLS configurations to be used while establishing connections with the externally exposed servers. Though secure transport mode is used fo...Rule Medium Severity -
Ensure APIServer is not configured with Old tlsSecurityProfile
The configuration <code>tlsSecurityProfile</code> specifies TLS configurations to be used while establishing connections with the externally exposed servers. Though secure transport mode is used fo...Rule Medium Severity -
Ensure that Audit Log Webhook Is Configured
Audit is on by default and the best practice is to ship audit logs off an cluster for retention. HyperShift is able to do this with the a audit webhook, which is configured in the HostedCluster cus...Rule Medium Severity -
Authentication
In cloud workloads, there are many ways to create and configure to multiple authentication services. Some of these authentication methods by not be secure or common methodologies, or they may not b...Group -
OAuth Clients Token Inactivity Timeout
Enter OAuth Clients Token Inactivity Timeout in SecondsValue -
Configure OAuth tokens to expire after a set period of inactivity
<p> You can configure OAuth tokens to expire after a set period of inactivity. By default, no token inactivity timeout is set. </p> <p> The inactivity timeout can be ei...Rule Medium Severity -
Configure OAuth tokens to expire after a set period of inactivity
<p> You can configure OAuth tokens to have have a custom duration. By default, the tokens are valid for 24 hours (86400 seconds). </p> <p> The maximum age can be either...Rule Medium Severity -
Configure OAuth server so that tokens have a maximum age set
<p> You can configure OAuth tokens to have have a custom duration. By default, the tokens are valid for 24 hours (86400 seconds). </p> <p> The maximum age can be either...Rule Medium Severity -
Only Use LDAP-based IdPs with TLS
<p> For users to interact with OpenShift Container Platform, they must first authenticate to the cluster. The authentication layer identifies the user associated with requests to the...Rule High Severity -
OpenShift Controller Settings
This section contains recommendations for the kube-controller-manager configurationGroup -
OpenShift - Logging Settings
Contains evaluations for the cluster's logging configuration settings.Group -
Ensure Controller secure-port argument is set
To ensure the Controller Manager service is bound to secure loopback address using a secure port, set the <code>RotateKubeletServerCertificate</code> option to <code>true</code> in the <code>opensh...Rule Low Severity -
Configure the Service Account Certificate Authority Key for the Controller Manager
To ensure the API Server utilizes its own key pair, set the <code>masterCA</code> parameter to the public key file for service accounts in the <code>openshift-kube-controller-manager</code> configm...Rule Medium Severity -
Configure the Service Account Private Key for the Controller Manager
To ensure the API Server utilizes its own key pair, set the <code>privateKeyFile</code> parameter to the public key file for service accounts in the <code>openshift-kube-controller-manager</code> c...Rule Medium Severity -
OpenShift etcd Settings
Contains rules that check correct OpenShift etcd settings.Group -
Disable etcd Self-Signed Certificates
To ensure the <code>etcd</code> service is not using self-signed certificates, run the following command: <pre>$ oc get cm/etcd-pod -n openshift-etcd -o yaml</pre> The etcd pod configuration contai...Rule Medium Severity -
Ensure That The etcd Client Certificate Is Correctly Set
To ensure the etcd service is serving TLS to clients, make sure the <code>etcd-pod*</code> ConfigMaps in the <code>openshift-etcd</code> namespace contain the following argument for the <code>etcd<...Rule Medium Severity -
Ensure ETCD has correct cipher suite
Check the current cipher suite used in ETCD.Rule Medium Severity -
Ensure That The etcd Key File Is Correctly Set
To ensure the etcd service is serving TLS to clients, make sure the <code>etcd-pod*</code> ConfigMaps in the <code>openshift-etcd</code> namespace contain the following argument for the <code>etcd<...Rule Medium Severity -
Disable etcd Peer Self-Signed Certificates
To ensure the <code>etcd</code> service is not using self-signed certificates, run the following command: <pre>$ oc get cm/etcd-pod -n openshift-etcd -o yaml</pre> The etcd pod configuration contai...Rule Medium Severity -
Ensure That The etcd Peer Client Certificate Is Correctly Set
To ensure the etcd service is serving TLS to peers, make sure the <code>etcd-pod*</code> ConfigMaps in the <code>openshift-etcd</code> namespace contain the following argument for the <code>etcd</c...Rule Medium Severity -
Enable The Peer Client Certificate Authentication
To ensure the <code>etcd</code> service is serving TLS to clients, make sure the <code>etcd-pod*</code> <code>ConfigMaps</code> in the <code>openshift-etcd</code> namespace contain the follo...Rule Medium Severity -
Ensure That The etcd Peer Key File Is Correctly Set
To ensure the etcd service is serving TLS to peers, make sure the <code>etcd-pod*</code> ConfigMaps in the <code>openshift-etcd</code> namespace contain the following argument for the <code>etcd</c...Rule Medium Severity -
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. The same is done for other points of communicati...Rule Medium Severity -
Kubernetes - General Security Practices
Contains evaluations for general security practices for operating a Kubernetes environment.Group -
Ensure the alert receiver is configured
In OpenShift Container Platform, an alert is fired when the conditions defined in an alerting rule are true. An alert provides a notification that a set of circumstances are apparent within a clust...Rule Medium Severity -
Streaming Connection Timeout Options
Time until connection timeouts. Use (s) for seconds, (m) for minutes, and (h) for hours.Value -
Enable Classification Banner on OpenShift Console
A classification banner can be configured by creating a Console Notification CR on OpenShiftRule Medium Severity -
Ensure the notification is enabled for Compliance Operator
The OpenShift platform provides the Compliance Operator for administrators to monitor compliance state of a cluster and provides them with an overview of gaps and ways to remediate them, and this ...Rule Medium Severity -
Kubernetes Pod Logs Must Be Group Owned By Root
All logs must be owned by root user and group and have permissions 755. By default, the path for the Kubernetes pod logs is/var/log/pods/
.Rule Medium Severity -
Ensure the notification is enabled for file integrity operator
The OpenShift platform provides the File Integrity Operator to monitor for unwanted file changes, and this control ensures proper notification alert is enabled so that system administrators and sec...Rule Medium Severity -
Kubernetes Pod Logs Must Be Owned and Group Owned By Root and have permissions 755
<p> All logs must be owned by root user and group and have permissions 755. By default, the path for the Kubernetes pod logs is <pre>/var/log/pods/</pre>. </p> <p> If a...Rule Medium Severity -
Kubernetes Pod Logs Must Be Owned By Root
All logs must be owned by root user and group. By default, the path for the Kubernetes audit log is <pre>/var/log/kube-apiserver/</pre>. To properly set the owner of <code>/var/log/pods/*</code>, ...Rule Medium Severity
Node 2
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