NIST 800-53 Moderate-Impact Baseline for Red Hat OpenShift - Node level
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 hardening the configuration. For each hardening recomm...Group -
System and Software Integrity
System and software integrity can be gained by installing antivirus, increasing system encryption strength with FIPS, verifying installed software, enabling SELinux, installing an Intrusion Prevent...Group -
Ensure the Container Runtime rejects unsigned images by default
<p> The OpenShift Platform allows for verifying the signature of a container image before pulling it. this is done via the policy.json file [1] which needs to be configured via the M...Rule Medium Severity -
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. The same is done for other points of communicati...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 set of PodSpecs that are provided through various ...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 disabled. Edit the Kubelet server configuration fil...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 ensure that the Kubelet requires authorization, valida...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 CA certificate, edit the kubelet configuration fil...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. Setting this too low could result in relevant events ...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 existing <code>KubeletConfig</code> object along these...Rule Medium Severity -
Ensure Kubelet is configured with allowed TLS versions
<p> The configuration <code>tlsSecurityProfile</code> specifies TLS configurations to be used while establishing connections with the externally exposed servers. Though secure transp...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 node(s) and set the below parameter: <pre> ... rota...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 node(s) and set the below parameter: <pre> featureG...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 and destinations parameters potentially creating a...Rule Medium Severity -
kubelet - Enable Protect Kernel Defaults
<p> Protect tuned kernel parameters from being overwritten by the kubelet. </p> <p> Before enabling this kernel parameter, it's important and necessary to first create ...Rule Medium Severity -
kubelet - Set Up Sysctl to Enable Protect Kernel Defaults
<p> Setup required tuned kernel parameters before enabling overwritten protection. Note that depending on the Linux distribution and its version that your cluster nodes are running, ...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 node(s) and set the below parameter: <pre> serverTL...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 timeouts To set the <code>streamingConnectionIdleTimeou...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>Container garbage collection: Removes terminated ...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>Container garbage collection: Removes terminated ...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>Container garbage collection: Removes terminated ...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>Container garbage collection: Removes terminated ...Rule Medium Severity -
OpenShift - Logging Settings
Contains evaluations for the cluster's logging configuration settings.Group -
Record Access Events to Kubernetes Audit Log Directory
The audit system should collect access events to read the Kubernetes audit log directory. The following audit rule will assure that access to audit log directory are collected. <pre>-a always,exit ...Rule Medium Severity -
Record Access Events to OAuth Audit Log Directory
The audit system should collect access events to read the OAuth audit log directory. The following audit rule will assure that access to audit log directory are collected. <pre>-a always,exit -F di...Rule Medium Severity -
Record Access Events to OpenShift Audit Log Directory
The audit system should collect access events to read the OpenShift audit log directory. The following audit rule will assure that access to audit log directory are collected. <pre>-a always,exit -...Rule Medium Severity -
The Kubernetes Audit Logs Directory Must Have Mode 0700
To properly set the permissions of/var/log/kube-apiserver/, run the command:$ sudo chmod 0700 /var/log/kube-apiserver/
Rule Medium Severity -
The OAuth Audit Logs Directory Must Have Mode 0700
To properly set the permissions of/var/log/oauth-apiserver/, run the command:$ sudo chmod 0700 /var/log/oauth-apiserver/
Rule Medium Severity -
The OpenShift Audit Logs Directory Must Have Mode 0700
To properly set the permissions of/var/log/openshift-apiserver/, run the command:$ sudo chmod 0700 /var/log/openshift-apiserver/
Rule Medium Severity -
Kubernetes Audit Logs Must Be Owned By Root
All audit 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/kube-apis...Rule Medium Severity -
OAuth Audit Logs Must Be Owned By Root
All audit logs must be owned by root user and group. By default, the path for the OAuth audit log is <pre>/var/log/oauth-apiserver/</pre>. To properly set the owner of <code>/var/log/oauth-apiserv...Rule Medium Severity -
OpenShift Audit Logs Must Be Owned By Root
All audit logs must be owned by root user and group. By default, the path for the OpenShift audit log is <pre>/var/log/openshift-apiserver/</pre>. To properly set the owner of <code>/var/log/opens...Rule Medium Severity -
Kubernetes Audit Logs Must Have Mode 0600
To properly set the permissions of/var/log/kube-apiserver/.*, run the command:$ sudo chmod 0600 /var/log/kube-apiserver/.*
Rule Medium Severity -
OAuth Audit Logs Must Have Mode 0600
To properly set the permissions of/var/log/oauth-apiserver/.*, run the command:$ sudo chmod 0600 /var/log/oauth-apiserver/.*
Rule Medium Severity -
OpenShift Audit Logs Must Have Mode 0600
To properly set the permissions of/var/log/openshift-apiserver/.*, run the command:$ sudo chmod 0600 /var/log/openshift-apiserver/.*
Rule Medium Severity -
Ensure /var/log/kube-apiserver Located On Separate Partition
Kubernetes API server audit logs are stored in the <code>/var/log/kube-apiserver</code> directory. <p> Partitioning Red Hat CoreOS is a Day 1 operation and cannot be changed afterwards. For documen...Rule Medium Severity -
Ensure /var/log/oauth-apiserver Located On Separate Partition
OpenShift OAuth server audit logs are stored in the <code>/var/log/oauth-apiserver</code> directory. <p> Partitioning Red Hat CoreOS is a Day 1 operation and cannot be changed afterwards. For docum...Rule Medium Severity -
Ensure /var/log/openshift-apiserver Located On Separate Partition
Openshift API server audit logs are stored in the <code>/var/log/openshift-apiserver</code> directory. <p> Partitioning Red Hat CoreOS is a Day 1 operation and cannot be changed afterwards. For doc...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-kubeconfig/kubeconfig</code>, run the command: <pre>$ sudo...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/*
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Verify Group Who Owns The etcd Member Pod Specification File
To properly set the group owner of/etc/kubernetes/manifests/etcd-pod.yaml, run the command:$ sudo chgrp root /etc/kubernetes/manifests/etcd-pod.yaml
Rule Medium Severity -
Verify Group Who Owns The Etcd PKI Certificate Files
To properly set the group owner of/etc/kubernetes/static-pod-resources/*/*/*/*.crt, run the command:$ sudo chgrp root /etc/kubernetes/static-pod-resources/*/*/*/*.crt
Rule Medium Severity -
Verify Group Who Owns The OpenShift SDN Container Network Interface Plugin IP Address Allocations
To properly set the group owner of/var/lib/cni/networks/openshift-sdn/.*, run the command:$ sudo chgrp root /var/lib/cni/networks/openshift-sdn/.*
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: <pre>$ sudo chgrp root /etc/kubernetes/static-po...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>, run the command: <pre>$ sudo chgrp root /etc/ku...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: <pre>$ sudo chgrp root /etc/kubernetes/static-po...Rule Medium Severity
Node 2
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