mirror of
https://github.com/aquasecurity/kube-bench.git
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1263 lines
64 KiB
YAML
1263 lines
64 KiB
YAML
---
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controls:
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version: rh-1.0
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id: 1
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text: "Master Node Security Configuration"
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type: "master"
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groups:
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- id: 1.1
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text: "Master Node Configuration Files"
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checks:
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- id: 1.1.1
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text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
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do
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oc exec -n openshift-kube-apiserver $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml;
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.2
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text: "Ensure that the API server pod specification file ownership is set to root:root (Manual)"
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audit: |
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for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
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do
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oc exec -n openshift-kube-apiserver $i -- \
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stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.3
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text: "Ensure that the controller manager pod specification file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
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do
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oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml;
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.4
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text: "Ensure that the controller manager pod specification file ownership is set to root:root (Manual)"
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audit: |
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for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
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do
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oc exec -n openshift-kube-controller-manager $i -- \
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stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.5
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text: "Ensure that the scheduler pod specification file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
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do
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oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml;
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.6
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text: "Ensure that the scheduler pod specification file ownership is set to root:root (Manual))"
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audit: |
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for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
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do
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oc exec -n openshift-kube-scheduler $i -- \
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stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.7
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text: "Ensure that the etcd pod specification file permissions are set to 644 or more restrictive (Manual))"
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audit: |
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for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
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do
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oc rsh -n openshift-etcd $i stat -c "$i %n permissions=%a" /etc/kubernetes/manifests/etcd-pod.yaml
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.8
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text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
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audit: |
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for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
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do
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oc rsh -n openshift-etcd $i stat -c "$i %n %U:%G" /etc/kubernetes/manifests/etcd-pod.yaml
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: true
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- id: 1.1.9
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text: "Ensure that the Container Network Interface file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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# For CNI multus
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for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/etc/cni/net.d/*.conf"; done 2>/dev/null
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for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/var/run/multus/cni/net.d/*.conf"; done 2>/dev/null
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# For SDN pods
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for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
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# For OVS pods
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /var/run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /etc/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.10
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text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
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audit: |
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# For CNI multus
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for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \""$i %n %U:%G\" /host/etc/cni/net.d/*.conf"; done 2>/dev/null
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for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \""$i %n %U:%G\" /host/var/run/multus/cni/net.d/*.conf"; done 2>/dev/null
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# For SDN pods
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for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n %U:%G"{} \;; done 2>/dev/null
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# For OVS pods in 4.5
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /var/run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /etc/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
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for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
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# For OVS pods in 4.6 TBD
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.11
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text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-etcd -l app=etcd -oname); do oc exec -n openshift-etcd -c etcd $i -- stat -c "$i %n permissions=%a" /var/lib/etcd/member; done
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "700"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.12
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text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-etcd -l app=etcd -oname); do oc exec -n openshift-etcd -c etcd $i -- stat -c "$i %n %U:%G" /var/lib/etcd/member; done
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.13
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text: "Ensure that the admin.conf file permissions are set to 644 or more restrictive (Manual))"
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audit: |
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for i in $(oc get nodes -o name)
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do
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oc debug $i -- chroot /host stat -c "$i %n permissions=%a" /etc/kubernetes/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.14
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text: "Ensure that the admin.conf file ownership is set to root:root (Manual)"
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audit: |
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for i in $(oc get nodes -o name)
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do
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oc debug $i -- chroot /host stat -c "$i %n %U:%G" /etc/kubernetes/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.15
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text: "Ensure that the scheduler.conf file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
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do
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oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.16
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text: "Ensure that the scheduler.conf file ownership is set to root:root (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
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do
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oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.17
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text: "Ensure that the controller-manager.conf file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
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do
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oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.18
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text: "Ensure that the controller-manager.conf file ownership is set to root:root (Manual)"
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audit: |
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for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
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do
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oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
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done 2>/dev/null
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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- id: 1.1.19
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text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
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audit: |
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# Should return root:root for all files and directories
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for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
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do
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# echo $i static-pod-certs
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
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# echo $i static-pod-resources
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
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done
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use_multiple_values: true
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tests:
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test_items:
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- flag: "root:root"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: true
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- id: 1.1.20
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text: "Ensure that the OpenShift PKI certificate file permissions are set to 644 or more restrictive (Manual)"
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audit: |
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for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
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do
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# echo $i static-pod-certs
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.crt' -exec stat -c "$i %n permissions=%a" {} \;
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done
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "644"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
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|
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- id: 1.1.21
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text: "Ensure that the OpenShift PKI key file permissions are set to 600 (Manual)"
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audit: |
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for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
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do
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# echo $i static-pod-certs
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oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.key' -exec stat -c "$i %n permissions=%a" {} \;
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done
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use_multiple_values: true
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tests:
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test_items:
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- flag: "permissions"
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compare:
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op: bitmask
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value: "600"
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remediation: |
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No remediation required; file permissions are managed by the operator.
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scored: false
|
|
|
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- id: 1.2
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text: "API Server"
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checks:
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- id: 1.2.1
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text: "Ensure that anonymous requests are authorized (Manual)"
|
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audit: |
|
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# To verify that userGroups include system:unauthenticated
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oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.auditConfig.policyConfiguration.rules[]'
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# To verify that userGroups include system:unauthenticated
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oc get configmap config -n openshift-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.auditConfig.policyConfiguration.rules[].userGroups'
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# To verify RBAC is enabled
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oc get clusterrolebinding
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oc get clusterrole
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oc get rolebinding
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oc get role
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tests:
|
|
test_items:
|
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- flag: "system:unauthenticated"
|
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remediation: |
|
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None required. The default configuration should not be modified.
|
|
scored: false
|
|
|
|
- id: 1.2.2
|
|
text: "Ensure that the --basic-auth-file argument is not set (Manual)"
|
|
audit: |
|
|
oc -n openshift-kube-apiserver get cm config -o yaml | grep --color "basic-auth"
|
|
oc -n openshift-apiserver get cm config -o yaml | grep --color "basic-auth"
|
|
# Add | awk '$3 != "AVAILABLE" { if ($3){print "available=true"}else{print "available=false"} }; to create AVAILABLE = true/false form
|
|
oc get clusteroperator authentication | awk '$3 != "AVAILABLE" { if ($3){print "available=true"}else{print "available=false"} }'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "basic-auth-file"
|
|
set: false
|
|
- flag: "available"
|
|
compare:
|
|
op: eq
|
|
value: true
|
|
remediation: |
|
|
None required. --basic-auth-file cannot be configured on OpenShift.
|
|
scored: false
|
|
|
|
- id: 1.2.3
|
|
text: "Ensure that the --token-auth-file parameter is not set (Manual)"
|
|
audit: |
|
|
# Verify that the token-auth-file flag is not present
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
oc get configmap config -n openshift-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq '.spec.observedConfig.apiServerArguments'
|
|
#Verify that the authentication operator is running
|
|
oc get clusteroperator authentication | awk '$3 != "AVAILABLE" { if ($3){print "available=true"}else{print "available=false"} }'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "token-auth-file"
|
|
set: false
|
|
- flag: "available"
|
|
compare:
|
|
op: eq
|
|
value: true
|
|
remediation: |
|
|
None is required.
|
|
scored: false
|
|
|
|
- id: 1.2.4
|
|
text: "Use https for kubelet connections (Manual)"
|
|
audit: |
|
|
#for 4.5
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.kubeletClientInfo'
|
|
#for 4.6
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
#for both 4.5 and 4.6
|
|
oc -n openshift-apiserver describe secret serving-cert
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/kubelet-client/tls.crt"
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/kubelet-client/tls.key"
|
|
remediation: |
|
|
No remediation is required.
|
|
OpenShift platform components use X.509 certificates for authentication.
|
|
OpenShift manages the CAs and certificates for platform components. This is not configurable.
|
|
scored: false
|
|
|
|
- id: 1.2.5
|
|
text: "Ensure that the kubelet uses certificates to authenticate (Manual)"
|
|
audit: |
|
|
#for 4.5
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.kubeletClientInfo'
|
|
#for 4.6
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
#for both 4.5 and 4.6
|
|
oc -n openshift-apiserver describe secret serving-cert
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/kubelet-client/tls.crt"
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/kubelet-client/tls.key"
|
|
remediation: |
|
|
No remediation is required.
|
|
OpenShift platform components use X.509 certificates for authentication.
|
|
OpenShift manages the CAs and certificates for platform components.
|
|
This is not configurable.
|
|
scored: false
|
|
|
|
- id: 1.2.6
|
|
text: "Verify that the kubelet certificate authority is set as appropriate (Manual)"
|
|
audit: |
|
|
# for 4.5
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.kubeletClientInfo'
|
|
# for 4.6
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
tests:
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/configmaps/kubelet-serving-ca/ca-bundle.crt"
|
|
remediation: |
|
|
No remediation is required.
|
|
OpenShift platform components use X.509 certificates for authentication.
|
|
OpenShift manages the CAs and certificates for platform components.
|
|
This is not configurable.
|
|
scored: false
|
|
|
|
- id: 1.2.7
|
|
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Manual)"
|
|
audit: |
|
|
# To verify that the authorization-mode argument is not used
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
oc get configmap config -n openshift-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
# To verify RBAC is configured:
|
|
oc get clusterrolebinding
|
|
oc get clusterrole
|
|
oc get rolebinding
|
|
oc get role
|
|
audit_config: |
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- path: "{.authorization-mode}"
|
|
compare:
|
|
op: nothave
|
|
value: "AlwaysAllow"
|
|
- path: "{.authorization-mode}"
|
|
flag: "authorization-mode"
|
|
set: false
|
|
remediation: |
|
|
None. RBAC is always on and the OpenShift API server does not use the values assigned to the flag authorization-mode.
|
|
scored: false
|
|
|
|
- id: 1.2.8
|
|
text: "Verify that the Node authorizer is enabled (Manual)"
|
|
audit: |
|
|
# For OCP 4.5 and earlier verify that authorization-mode is not used
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq '.spec.observedConfig.apiServerArguments'
|
|
# For OCP 4.5 and earlier verify that authorization-mode is not used
|
|
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
|
do
|
|
oc debug node/${node} -- chroot /host cat /etc/kubernetes/kubelet.conf | grep authorization-mode
|
|
oc debug node/${node} -- chroot /host ps -aux | grep kubelet | grep authorization-mode
|
|
done
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
audit_config: |
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- path: "{.authorization-mode}"
|
|
compare:
|
|
op: has
|
|
value: "Node"
|
|
- path: "{.authorization-mode}"
|
|
flag: "authorization-mode"
|
|
set: false
|
|
remediation: |
|
|
No remediation is required.
|
|
scored: false
|
|
|
|
- id: 1.2.9
|
|
text: "Verify that RBAC is enabled (Manual)"
|
|
audit: |
|
|
# For 4.5 To verify that the authorization-mode argument is not used
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
oc get configmap config -n openshift-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
# To verify RBAC is used
|
|
oc get clusterrolebinding
|
|
oc get clusterrole
|
|
oc get rolebinding
|
|
oc get role
|
|
# For 4.6, verify that the authorization-mode argument includes RBAC
|
|
audit_config: |
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- path: "{.authorization-mode}"
|
|
compare:
|
|
op: has
|
|
value: "RBAC"
|
|
- path: "{.authorization-mode}"
|
|
flag: "authorization-mode"
|
|
set: false
|
|
remediation: |
|
|
None. It is not possible to disable RBAC.
|
|
scored: false
|
|
|
|
- id: 1.2.10
|
|
text: "Ensure that the APIPriorityAndFairness feature gate is enabled (Manual)"
|
|
audit: |
|
|
#Verify the APIPriorityAndFairness feature-gate
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq '.spec.observedConfig.apiServerArguments'
|
|
#Verify the set of admission-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "APIPriorityAndFairness=true"
|
|
- flag: "EventRateLimit"
|
|
set: false
|
|
remediation: |
|
|
No remediation is required
|
|
scored: false
|
|
|
|
- id: 1.2.11
|
|
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Manual)"
|
|
audit: |
|
|
#Verify the set of admission-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
tests:
|
|
test_items:
|
|
- flag: "AlwaysAdmit"
|
|
set: false
|
|
remediation: |
|
|
No remediation is required. The AlwaysAdmit admission controller cannot be enabled in OpenShift.
|
|
scored: false
|
|
|
|
- id: 1.2.12
|
|
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
|
audit: |
|
|
#Verify the set of admissi on-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
tests:
|
|
test_items:
|
|
- flag: "AlwaysPullImages"
|
|
set: false
|
|
remediation: |
|
|
None required.
|
|
scored: false
|
|
|
|
- id: 1.2.13
|
|
text: "Ensure that the admission control plugin SecurityContextDeny is not set (Manual)"
|
|
audit: |
|
|
#Verify the set of admission-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
output=$(oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has SecurityContextDeny and SecurityContextConstraint compiled" || echo $output
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
#Verify that SecurityContextConstraints are deployed
|
|
oc get scc
|
|
oc describe scc restricted
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "SecurityContextConstraint"
|
|
set: true
|
|
- flag: "anyuid"
|
|
- flag: "hostaccess"
|
|
- flag: "hostmount-anyuid"
|
|
- flag: "hostnetwork"
|
|
- flag: "node-exporter"
|
|
- flag: "nonroot"
|
|
- flag: "privileged"
|
|
- flag: "restricted"
|
|
remediation: |
|
|
None required. The Security Context Constraint admission controller cannot be disabled in OpenShift 4.
|
|
scored: false
|
|
|
|
- id: 1.2.14
|
|
text: "Ensure that the admission control plugin ServiceAccount is set (Manual)"
|
|
audit: |
|
|
#Verify the list of admission controllers for 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
output=$(oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has ServiceAccount compiled" || echo $output
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
#Verify that Service Accounts are present
|
|
oc get sa -A
|
|
tests:
|
|
test_items:
|
|
- flag: "ServiceAccount"
|
|
set: true
|
|
remediation: |
|
|
None required. OpenShift is configured to use service accounts by default.
|
|
scored: false
|
|
|
|
- id: 1.2.15
|
|
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Manual)"
|
|
audit: |
|
|
#Verify the list of admission controllers for 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
output=$(oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has NamespaceLifecycle compiled" || echo $output
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
tests:
|
|
test_items:
|
|
- flag: "NamespaceLifecycle"
|
|
remediation: |
|
|
Ensure that the --disable-admission-plugins parameter does not include NamespaceLifecycle.
|
|
scored: false
|
|
|
|
- id: 1.2.16
|
|
text: "Ensure that the admission control plugin SecurityContextConstraint is set (Manual)"
|
|
audit: |
|
|
#Verify the set of admission-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
output=$(oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has SecurityContextConstraint compiled" || echo $output
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
#Verify that SecurityContextConstraints are deployed
|
|
oc get scc
|
|
oc describe scc restricted
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "SecurityContextConstraint"
|
|
- flag: "anyuid"
|
|
- flag: "hostaccess"
|
|
- flag: "hostmount-anyuid"
|
|
- flag: "hostnetwork"
|
|
- flag: "node-exporter"
|
|
- flag: "nonroot"
|
|
- flag: "privileged"
|
|
- flag: "restricted"
|
|
remediation: |
|
|
None required. Security Context Constraints are enabled by default in OpenShift and cannot be disabled.
|
|
scored: false
|
|
|
|
- id: 1.2.17
|
|
text: "Ensure that the admission control plugin NodeRestriction is set (Manual)"
|
|
audit: |
|
|
# For 4.5, review the control plane manifest https://github.com/openshift/origin/blob/release-4.5/vendor/k8s.io/kubernetes/cmd/kubeadm/app/phases/controlplane/manifests.go#L132
|
|
#Verify the set of admission-plugins for OCP 4.6 and higher
|
|
oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"'
|
|
output=$(oc -n openshift-kube-apiserver get configmap config -o json | jq -r '.data."config.yaml"' | jq '.apiServerArguments."enable-admission-plugins"')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has NodeRestriction compiled" || echo $output
|
|
#Check that no overrides are configured
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
|
tests:
|
|
test_items:
|
|
- flag: "NodeRestriction"
|
|
remediation: |
|
|
The NodeRestriction plugin cannot be disabled.
|
|
scored: false
|
|
|
|
- id: 1.2.18
|
|
text: "Ensure that the --insecure-bind-address argument is not set (Manual)"
|
|
audit: |
|
|
# InsecureBindAddress=true should not be in the results
|
|
oc get kubeapiservers.operator.openshift.io cluster -o jsonpath='{range .spec.observedConfig.apiServerArguments.feature-gates[*]}{@}{"\n"}{end}'
|
|
# Result should be only 6443
|
|
oc -n openshift-kube-apiserver get endpoints -o jsonpath='{.items[*].subsets[*].ports[*].port}'
|
|
# Result should be only 8443
|
|
oc -n openshift-apiserver get endpoints -o jsonpath='{.items[*].subsets[*].ports[*].port}'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "insecure-bind-address"
|
|
set: false
|
|
- flag: 6443
|
|
- flag: 8443
|
|
remediation: |
|
|
None required.
|
|
scored: false
|
|
|
|
- id: 1.2.19
|
|
text: "Ensure that the --insecure-port argument is set to 0 (Manual)"
|
|
audit: |
|
|
# Should return 6443
|
|
oc -n openshift-kube-apiserver get endpoints -o jsonpath='{.items[*].subsets[*].ports[*].port}'
|
|
# For OCP 4.6 and above
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments["insecure-port"]'
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments["insecure-port"]')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has insecure-port set to \"0\" compiled" || echo $output
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "\"0\""
|
|
- flag: "6443"
|
|
remediation: |
|
|
None required. The configuration is managed by the API server operator.
|
|
scored: false
|
|
|
|
- id: 1.2.20
|
|
text: "Ensure that the --secure-port argument is not set to 0 (Manual)"
|
|
audit: |
|
|
oc get kubeapiservers.operator.openshift.io cluster -o json | jq '.spec.observedConfig'
|
|
# Should return only 6443
|
|
echo ports=`oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o jsonpath='{.items[*].spec.containers[?(@.name=="kube-apiserver")].ports[*].containerPort}'`
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: '"bindAddress": "0.0.0.0:6443"'
|
|
- flag: "ports"
|
|
compare:
|
|
op: regex
|
|
value: '\s*(?:6443\s*){1,}$'
|
|
remediation: |
|
|
None required.
|
|
scored: false
|
|
|
|
- id: 1.2.21
|
|
text: "Ensure that the healthz endpoint is protected by RBAC (Manual)"
|
|
type: manual
|
|
audit: |
|
|
# Verify endpoints
|
|
oc -n openshift-kube-apiserver describe endpoints
|
|
# Check config for ports, livenessProbe, readinessProbe, healthz
|
|
oc -n openshift-kube-apiserver get cm kube-apiserver-pod -o json | jq -r '.data."pod.yaml"' | jq '.spec.containers'
|
|
# Test to validate RBAC enabled on the apiserver endpoint; check with non-admin role
|
|
oc project openshift-kube-apiserver POD=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o jsonpath='{.items[0].metadata.name}') PORT=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o jsonpath='{.items[0].spec.containers[0].ports[0].hostPort}')
|
|
# Following should return 403 Forbidden
|
|
oc rsh -n openshift-kube-apiserver ${POD} curl https://localhost:${PORT}/metrics -k
|
|
# Create a service account to test RBAC
|
|
oc create -n openshift-kube-apiserver sa permission-test-sa
|
|
# Should return 403 Forbidden
|
|
SA_TOKEN=$(oc sa -n openshift-kube-apiserver get-token permission-test-sa)
|
|
oc rsh -n openshift-kube-apiserver ${POD} curl https://localhost:${PORT}/metrics -H "Authorization: Bearer $SA_TOKEN" -k
|
|
# Cleanup
|
|
oc delete -n openshift-kube-apiserver sa permission-test-sa
|
|
# As cluster admin, should succeed
|
|
CLUSTER_ADMIN_TOKEN=$(oc whoami -t)
|
|
oc rsh -n openshift-kube-apiserver ${POD} curl https://localhost:${PORT}/metrics -H "Authorization: Bearer $CLUSTER_ADMIN_TOKEN" -k
|
|
remediation: |
|
|
None required as profiling data is protected by RBAC.
|
|
scored: false
|
|
|
|
- id: 1.2.22
|
|
text: "Ensure that the --audit-log-path argument is set (Manual)"
|
|
audit: |
|
|
# Should return “/var/log/kube-apiserver/audit.log"
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o jsonpath="{['.data.config\.yaml']}" | jq '.auditConfig.auditFilePath')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "$output" || true
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-path"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "$output" || true
|
|
POD=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o jsonpath='{.items[0].metadata.name}')
|
|
oc rsh -n openshift-kube-apiserver -c kube-apiserver $POD ls /var/log/kube-apiserver/audit.log 2>/dev/null
|
|
# Should return 0
|
|
echo exit_code=$?
|
|
# Should return "/var/log/openshift-apiserver/audit.log"
|
|
output=$(oc get configmap config -n openshift-apiserver -o jsonpath="{['.data.config\.yaml']}" | jq '.auditConfig.auditFilePath')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "$output" || true
|
|
output=$(oc get configmap config -n openshift-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-path"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "$output" || true
|
|
POD=$(oc get pods -n openshift-apiserver -l apiserver=true -o jsonpath='{.items[0].metadata.name}')
|
|
oc rsh -n openshift-apiserver $POD ls /var/log/openshift-apiserver/audit.log 2>/dev/null
|
|
# Should return 0
|
|
echo exit_code=$?
|
|
use_multiple_values: true
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- flag: "/var/log/kube-apiserver/audit.log"
|
|
- flag: "/var/log/openshift-apiserver/audit.log"
|
|
- flag: "exit_code=0"
|
|
- flag: "null"
|
|
remediation: |
|
|
None required. This is managed by the cluster apiserver operator.
|
|
scored: false
|
|
|
|
- id: 1.2.23
|
|
text: "Ensure that the audit logs are forwarded off the cluster for retention (Manual)"
|
|
type: "manual"
|
|
remediation: |
|
|
Follow the documentation for log forwarding. Forwarding logs to third party systems
|
|
https://docs.openshift.com/container-platform/4.5/logging/cluster-logging-external.html
|
|
|
|
scored: false
|
|
|
|
- id: 1.2.24
|
|
text: "Ensure that the maximumRetainedFiles argument is set to 10 or as appropriate (Manual)"
|
|
audit: |
|
|
#NOTICE
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r .auditConfig.maximumRetainedFiles)
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "maximumRetainedFiles=$output" || true
|
|
output=$(oc get configmap config -n openshift-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r .auditConfig.maximumRetainedFiles)
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "maximumRetainedFiles=$output" || true
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-maxbackup"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "audit-log-maxbackup=$output" || true
|
|
output=$(oc get configmap config -n openshift-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-maxbackup"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "audit-log-maxbackup=$output" || true
|
|
use_multiple_values: true
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- flag: "maximumRetainedFiles"
|
|
compare:
|
|
op: gte
|
|
value: 10
|
|
- flag: "audit-log-maxbackup"
|
|
compare:
|
|
op: gte
|
|
value: 10
|
|
remediation: |
|
|
Set the maximumRetainedFiles parameter to 10 or as an appropriate number of files. maximumRetainedFiles: 10
|
|
scored: false
|
|
|
|
- id: 1.2.25
|
|
text: "Ensure that the maximumFileSizeMegabytes argument is set to 100 or as appropriate (Manual)"
|
|
audit: |
|
|
#NOTICE
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r .auditConfig.maximumFileSizeMegabytes)
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "maximumFileSizeMegabytes=$output" || true
|
|
output=$(oc get configmap config -n openshift-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r .auditConfig.maximumFileSizeMegabytes)
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "maximumFileSizeMegabytes=$output" || true
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-maxsize"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "audit-log-maxsize=$output" || true
|
|
output=$(oc get configmap config -n openshift-apiserver -o json | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["audit-log-maxsize"][]?')
|
|
[ "$output" != "" ] && [ "$output" != "null" ] && echo "audit-log-maxsize=$output" || true
|
|
use_multiple_values: true
|
|
tests:
|
|
bin_op: or
|
|
test_items:
|
|
- flag: "maximumFileSizeMegabytes"
|
|
compare:
|
|
op: gte
|
|
value: 100
|
|
- flag: "audit-log-maxsize"
|
|
compare:
|
|
op: gte
|
|
value: 100
|
|
remediation: |
|
|
Set the audit-log-maxsize parameter to 100 or as an appropriate number.
|
|
maximumFileSizeMegabytes: 100
|
|
scored: false
|
|
|
|
- id: 1.2.26
|
|
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
|
audit: |
|
|
echo requestTimeoutSeconds=`oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .servingInfo.requestTimeoutSeconds`
|
|
tests:
|
|
test_items:
|
|
- flag: "requestTimeoutSeconds"
|
|
remediation: |
|
|
TBD
|
|
scored: false
|
|
|
|
- id: 1.2.27
|
|
text: "Ensure that the --service-account-lookup argument is set to true (Manual)"
|
|
audit: |
|
|
# For OCP 4.5
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments' | grep service-account-lookup
|
|
# For OCP 4.6 and above
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["service-account-lookup"]'
|
|
output=$(oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["service-account-lookup"][0]')
|
|
[ "$output" == "null" ] && echo "ocp 4.5 has service-account-lookup=true compiled" || echo service-account-lookup=$output
|
|
tests:
|
|
test_items:
|
|
- flag: "service-account-lookup=true"
|
|
remediation: |
|
|
TBD
|
|
scored: false
|
|
|
|
- id: 1.2.28
|
|
text: "Ensure that the --service-account-key-file argument is set as appropriate (Manual)"
|
|
audit: |
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .serviceAccountPublicKeyFiles[]
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/configmaps/sa-token-signing-certs"
|
|
- flag: "/etc/kubernetes/static-pod-resources/configmaps/bound-sa-token-signing-certs"
|
|
remediation: |
|
|
The OpenShift API server does not use the service-account-key-file argument.
|
|
The ServiceAccount token authenticator is configured with serviceAccountConfig.publicKeyFiles.
|
|
OpenShift does not reuse the apiserver TLS key. This is not configurable.
|
|
scored: false
|
|
|
|
- id: 1.2.29
|
|
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Manual)"
|
|
audit: |
|
|
# etcd Certificate File
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .storageConfig.certFile
|
|
# etcd Key File
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .storageConfig.keyFile
|
|
# NOTICE 4.6 extention
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["etcd-certfile"]'
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["etcd-keyfile"]'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/etcd-client/tls.crt"
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/etcd-client/tls.key"
|
|
remediation: |
|
|
OpenShift automatically manages TLS and client certificate authentication for etcd.
|
|
This is not configurable.
|
|
scored: false
|
|
|
|
- id: 1.2.30
|
|
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
|
audit: |
|
|
# TLS Cert File - openshift-kube-apiserver
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .servingInfo.certFile
|
|
# TLS Key File
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.servingInfo.keyFile'
|
|
# NOTECI 4.6 extention
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["tls-cert-file"]'
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["tls-private-key-file"]'
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-certs/secrets/service-network-serving-certkey/tls.crt"
|
|
- flag: "/etc/kubernetes/static-pod-certs/secrets/service-network-serving-certkey/tls.key"
|
|
remediation: |
|
|
OpenShift automatically manages TLS authentication for the API server communication with the node/kublet.
|
|
This is not configurable. You may optionally set a custom default certificate to be used by the API server
|
|
when serving content in order to enable clients to access the API server at a different host name or without
|
|
the need to distribute the cluster-managed certificate authority (CA) certificates to the clients.
|
|
Follow the directions in the OpenShift documentation User-provided certificates for the API server
|
|
scored: false
|
|
|
|
- id: 1.2.31
|
|
text: "Ensure that the --client-ca-file argument is set as appropriate (Manual)"
|
|
audit: |
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .servingInfo.clientCA
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["client-ca-file"]'
|
|
tests:
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-certs/configmaps/client-ca/ca-bundle.crt"
|
|
remediation: |
|
|
OpenShift automatically manages TLS authentication for the API server communication with the node/kublet.
|
|
This is not configurable. You may optionally set a custom default certificate to be used by the API
|
|
server when serving content in order to enable clients to access the API server at a different host name
|
|
or without the need to distribute the cluster-managed certificate authority (CA) certificates to the clients.
|
|
|
|
User-provided certificates must be provided in a kubernetes.io/tls type Secret in the openshift-config namespace.
|
|
Update the API server cluster configuration,
|
|
the apiserver/cluster resource, to enable the use of the user-provided certificate.
|
|
scored: false
|
|
|
|
- id: 1.2.32
|
|
text: "Ensure that the --etcd-cafile argument is set as appropriate (Manual)"
|
|
audit: |
|
|
#etcd CA File
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r .storageConfig.ca
|
|
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq -r '.apiServerArguments["etcd-cafile"]'
|
|
tests:
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/configmaps/etcd-serving-ca/ca-bundle.crt"
|
|
remediation: |
|
|
None required. OpenShift generates the etcd-cafile and sets the arguments appropriately in the API server. Communication with etcd is secured by the etcd serving CA.
|
|
scored: false
|
|
|
|
- id: 1.2.33
|
|
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
|
audit: |
|
|
# encrypt the etcd datastore
|
|
oc get openshiftapiserver -o=jsonpath='{range.items[0].status.conditions[?(@.type=="Encrypted")]}{.reason}{"\n"}{.message}{"\n"}'
|
|
tests:
|
|
test_items:
|
|
- flag: "EncryptionCompleted"
|
|
remediation: |
|
|
Follow the OpenShift documentation for Encrypting etcd data | Authentication | OpenShift Container Platform 4.5
|
|
https://docs.openshift.com/container-platform/4.5/security/encrypting-etcd.html
|
|
scored: false
|
|
|
|
- id: 1.2.34
|
|
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
|
audit: |
|
|
# encrypt the etcd datastore
|
|
oc get openshiftapiserver -o=jsonpath='{range.items[0].status.conditions[?(@.type=="Encrypted")]}{.reason}{"\n"}{.message}{"\n"}'
|
|
tests:
|
|
test_items:
|
|
- flag: "EncryptionCompleted"
|
|
remediation: |
|
|
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
|
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
|
scored: false
|
|
|
|
- id: 1.2.35
|
|
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
|
type: manual
|
|
remediation: |
|
|
Verify that the tlsSecurityProfile is set to the value you chose.
|
|
Note: The HAProxy Ingress controller image does not support TLS 1.3
|
|
and because the Modern profile requires TLS 1.3, it is not supported.
|
|
The Ingress Operator converts the Modern profile to Intermediate.
|
|
The Ingress Operator also converts the TLS 1.0 of an Old or Custom profile to 1.1,
|
|
and TLS 1.3 of a Custom profile to 1.2.
|
|
scored: false
|
|
|
|
- id: 1.3
|
|
text: "Controller Manager"
|
|
checks:
|
|
- id: 1.3.1
|
|
text: "Ensure that garbage collection is configured as appropriate (Manual)"
|
|
type: manual
|
|
remediation: |
|
|
To configure, follow the directions in Configuring garbage collection for containers and images
|
|
https://docs.openshift.com/container-platform/4.5/nodes/nodes/nodes-nodes-garbage-collection.html#nodes-nodes-garbage-collection-configuring_nodes-nodes-configuring
|
|
scored: false
|
|
|
|
- id: 1.3.2
|
|
text: "Ensure that controller manager healthz endpoints are protected by RBAC (Manual)"
|
|
type: manual
|
|
audit: |
|
|
# Verify configuration for ports, livenessProbe, readinessProbe, healthz
|
|
oc -n openshift-kube-controller-manager get cm kube-controller-manager-pod -o json | jq -r '.data."pod.yaml"' | jq '.spec.containers'
|
|
# Verify endpoints
|
|
oc -n openshift-kube-controller-manager describe endpoints
|
|
# Test to validate RBAC enabled on the controller endpoint; check with non-admin role
|
|
oc project openshift-kube-controller-manage
|
|
POD=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o jsonpath='{.items[0].metadata.name}')
|
|
PORT=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o jsonpath='{.items[0].spec.containers[0].ports[0].hostPort}')
|
|
# Following should return 403 Forbidden
|
|
oc rsh -n openshift-kube-controller-manager ${POD} curl https://localhost:${PORT}/metrics -k
|
|
# Create a service account to test RBAC
|
|
oc create -n openshift-kube-controller-manager sa permission-test-sa
|
|
# Should return 403 Forbidden
|
|
SA_TOKEN=$(oc sa -n openshift-kube-controller-manager get-token permission-test-sa)
|
|
oc rsh -n openshift-kube-controller-manager ${POD} curl https://localhost:${PORT}/metrics -H "Authorization: Bearer $SA_TOKEN" -k
|
|
# Cleanup
|
|
oc delete -n openshift-kube-controller-manager sa permission-test-sa
|
|
# As cluster admin, should succeed
|
|
CLUSTER_ADMIN_TOKEN=$(oc whoami -t)
|
|
oc rsh -n openshift-kube-controller-manager ${POD} curl https://localhost:${PORT}/metrics -H "Authorization: Bearer $CLUSTER_ADMIN_TOKEN" -k
|
|
remediation: |
|
|
None required; profiling is protected by RBAC.
|
|
scored: false
|
|
|
|
- id: 1.3.3
|
|
text: "Ensure that the --use-service-account-credentials argument is set to true (Manual)"
|
|
audit: |
|
|
echo use-service-account-credentials=`oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["use-service-account-credentials"][]'`
|
|
tests:
|
|
test_items:
|
|
- flag: "use-service-account-credentials"
|
|
compare:
|
|
op: eq
|
|
value: true
|
|
remediation: |
|
|
The OpenShift Controller Manager operator manages and updates the OpenShift Controller Manager.
|
|
The Kubernetes Controller Manager operator manages and updates the Kubernetes Controller Manager deployed on top of OpenShift.
|
|
This operator is configured via KubeControllerManager custom resource.
|
|
scored: false
|
|
|
|
- id: 1.3.4
|
|
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Manual)"
|
|
audit: |
|
|
oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["service-account-private-key-file"][]'
|
|
tests:
|
|
test_items:
|
|
- flag: "/etc/kubernetes/static-pod-resources/secrets/service-account-private-key/service-account.key"
|
|
remediation: |
|
|
None required.
|
|
OpenShift manages the service account credentials for the scheduler automatically.
|
|
scored: false
|
|
|
|
- id: 1.3.5
|
|
text: "Ensure that the --root-ca-file argument is set as appropriate (Manual)"
|
|
audit: |
|
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oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["root-ca-file"][]'
|
|
tests:
|
|
test_items:
|
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- flag: "/etc/kubernetes/static-pod-resources/configmaps/serviceaccount-ca/ca-bundle.crt"
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remediation: |
|
|
None required.
|
|
Certificates for OpenShift platform components are automatically created and rotated by the OpenShift Container Platform.
|
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scored: false
|
|
|
|
- id: 1.3.6
|
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text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
|
audit: |
|
|
oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["feature-gates"][]'
|
|
tests:
|
|
test_items:
|
|
- flag: "RotateKubeletServerCertificate"
|
|
compare:
|
|
op: eq
|
|
value: "true"
|
|
remediation: |
|
|
None required.
|
|
Certificates for OpenShift platform components are automatically created and rotated by the OpenShift Container Platform.
|
|
scored: false
|
|
|
|
- id: 1.3.7
|
|
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Manual)"
|
|
audit: |
|
|
echo port=`oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq '.extendedArguments["port"][]'`
|
|
echo secure-port=`oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq '.extendedArguments["secure-port"][]'`
|
|
#Following should fail with a http code 403
|
|
POD=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o jsonpath='{.items[0].metadata.name}')
|
|
oc rsh -n openshift-kube-controller-manager -c kube-controller-manager $POD curl https://localhost:10257/metrics -k
|
|
tests:
|
|
bin_op: and
|
|
test_items:
|
|
- flag: "secure-port"
|
|
compare:
|
|
op: eq
|
|
value: "\"10257\""
|
|
- flag: "port"
|
|
compare:
|
|
op: eq
|
|
value: "\"0\""
|
|
- flag: "\"code\": 403"
|
|
remediation: |
|
|
Edit the Controller Manager pod specification file $controllermanagerconf
|
|
on the master node and ensure the correct value for the --bind-address parameter
|
|
scored: false
|
|
|
|
- id: 1.4
|
|
text: "Scheduler"
|
|
checks:
|
|
- id: 1.4.1
|
|
text: "Ensure that the healthz endpoints for the scheduler are protected by RBAC (Manual)"
|
|
type: manual
|
|
audit: |
|
|
# check configuration for ports, livenessProbe, readinessProbe, healthz
|
|
oc -n openshift-kube-scheduler get cm kube-scheduler-pod -o json | jq -r '.data."pod.yaml"' | jq '.spec.containers'
|
|
# Test to verify endpoints
|
|
oc -n openshift-kube-scheduler describe endpoints
|
|
# Test to validate RBAC enabled on the scheduler endpoint; check with non-admin role
|
|
oc project openshift-kube-scheduler
|
|
POD=$(oc get pods -l app=openshift-kube-scheduler -o jsonpath='{.items[0].metadata.name}')
|
|
PORT=$(oc get pod $POD -o jsonpath='{.spec.containers[0].livenessProbe.httpGet.port}')
|
|
# Should return 403 Forbidden
|
|
oc rsh ${POD} curl http://localhost:${PORT}/metrics -k
|
|
# Create a service account to test RBAC
|
|
oc create sa permission-test-sa
|
|
# Should return 403 Forbidden
|
|
SA_TOKEN=$(oc sa get-token permission-test-sa)
|
|
oc rsh ${POD} curl http://localhost:${PORT}/metrics -H "Authorization: Bearer $SA_TOKEN" -k
|
|
# Cleanup
|
|
oc delete sa permission-test-sa
|
|
# As cluster admin, should succeed
|
|
CLUSTER_ADMIN_TOKEN=$(oc whoami -t)
|
|
oc rsh ${POD} curl http://localhost:${PORT}/metrics -H "Authorization: Bearer $CLUSTER_ADMIN_TOKEN" -k
|
|
remediation: |
|
|
A fix to this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1889488 None required.
|
|
Profiling is protected by RBAC and cannot be disabled.
|
|
scored: false
|
|
|
|
- id: 1.4.2
|
|
text: "Verify that the scheduler API service is protected by authentication and authorization (Manual)"
|
|
type: manual
|
|
audit: |
|
|
# To verify endpoints
|
|
oc -n openshift-kube-scheduler describe endpoints
|
|
# To verify that bind-adress is not used in the configuration and that port is set to 0
|
|
oc -n openshift-kube-scheduler get cm kube-scheduler-pod -o json | jq -r '.data."pod.yaml"' | jq '.spec.containers'
|
|
# To test for RBAC:
|
|
oc project openshift-kube-scheduler
|
|
POD=$(oc get pods -l app=openshift-kube-scheduler -o jsonpath='{.items[0].metadata.name}')
|
|
POD_IP=$(oc get pods -l app=openshift-kube-scheduler -o jsonpath='{.items[0].status.podIP}')
|
|
PORT=$(oc get pod $POD -o jsonpath='{.spec.containers[0].livenessProbe.httpGet.port}')
|
|
# Should return a 403
|
|
oc rsh ${POD} curl http://${POD_IP}:${PORT}/metrics
|
|
# Create a service account to test RBAC
|
|
oc create sa permission-test-sa
|
|
# Should return 403 Forbidden
|
|
SA_TOKEN=$(oc sa get-token permission-test-sa)
|
|
oc rsh ${POD} curl http://localhost:${PORT}/metrics -H "Authorization: Bearer $SA_TOKEN" -k
|
|
# Cleanup
|
|
oc delete sa permission-test-sa
|
|
# As cluster admin, should succeed
|
|
CLUSTER_ADMIN_TOKEN=$(oc whoami -t)
|
|
oc rsh ${POD} curl http://localhost:${PORT}/metrics -H "Authorization: Bearer $CLUSTER_ADMIN_TOKEN" -k
|
|
remediation: |
|
|
By default, the --bind-address argument is not present,
|
|
the readinessProbe and livenessProbe arguments are set to 10251 and the port argument is set to 0.
|
|
Check the status of this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1889488
|
|
scored: false
|