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Guide to the Secure Configuration of Amazon Elastic Kubernetes Service

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure Private Endpoint Access

    Disable access to the Kubernetes API from outside the node network if it is not required.
    Rule Unknown Severity
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  • Ensure Cluster Private Nodes

    Disable public IP addresses for cluster nodes, so that they only have private IP addresses. Private Nodes are nodes with no public IP addresses.
    Rule Unknown Severity
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  • Kubernetes - Registry Security Practices

    Contains evaluations for Kubernetes registry security practices, and cluster-wide registry configuration.
    Group
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  • Only use approved container registries

    Use approved container registries.
    Rule Unknown Severity
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  • Ensure Image Vulnerability Scanning

    Scan images being deployed to Amazon EKS for vulnerabilities.
    Rule Unknown Severity
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  • Ensure Cluster Service Account with read-only access to Amazon ECR

    Configure the Cluster Service Account with Storage Object Viewer Role to only allow read- only access to Amazon ECR.
    Rule Unknown Severity
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  • Minimize user access to Amazon ECR

    Restrict user access to Amazon ECR, limiting interaction with build images to only authorized personnel and service accounts.
    Rule Unknown Severity
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  • Kubernetes Secrets Management

    Secrets let you store and manage sensitive information, such as passwords, OAuth tokens, and ssh keys. Such information might otherwise be put in a Pod specification or in an image.
    Group
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  • Ensure Kubernetes Secrets are Encrypted

    Encrypt Kubernetes secrets, stored in etcd, using secrets encryption feature during Amazon EKS cluster creation.
    Rule Unknown Severity
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  • Kubernetes - Worker Node Settings

    Contains evaluations for the worker node configuration settings.
    Group
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  • Verify Group Who Owns The Worker Kubeconfig File

    To properly set the group owner of /var/lib/kubelet/kubeconfig, run the command: 
    $ sudo chgrp root /var/lib/kubelet/kubeconfig
    Rule Medium Severity
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  • Verify User Who Owns The Kubelet Configuration File

    To properly set the owner of /etc/kubernetes/kubelet/kubelet-config.json, run the command: 
    $ sudo chown root /etc/kubernetes/kubelet/kubelet-config.json
    Rule Medium Severity
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  • Verify User Who Owns The Worker Kubeconfig File

    To properly set the owner of /var/lib/kubelet/kubeconfig, run the command: 
    $ sudo chown root /var/lib/kubelet/kubeconfig
    Rule Medium Severity
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  • Verify Permissions on The Kubelet Configuration File

    To properly set the permissions of /etc/kubernetes/kubelet/kubelet-config.json, run the command: 
    $ sudo chmod 0644 /etc/kubernetes/kubelet/kubelet-config.json
    Rule Medium Severity
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  • Verify Permissions on the Worker Kubeconfig File

    To properly set the permissions of /var/lib/kubelet/kubeconfig, run the command: 
    $ sudo chmod 0644 /var/lib/kubelet/kubeconfig
    Rule Medium Severity
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  • 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
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  • kubelet - Enable Server Certificate Rotation

    To enable the kubelet to rotate server certificates, edit the kubelet configuration file <code>/etc/kubernetes/kubelet/kubelet-config.json</code> on the kubelet node(s) and set the below parameter:...
    Rule Medium Severity
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  • Verify Group Who Owns The Kubelet Configuration File

    To properly set the group owner of /etc/kubernetes/kubelet/kubelet-config.json, run the command: 
    $ sudo chgrp root /etc/kubernetes/kubelet/kubelet-config.json
    Rule Medium Severity
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  • 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
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  • 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
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Node 2

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