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53bc12229a
kube-bench/cfg/rh-1.0/master.yaml
Anupam Tamrakar 3b8379f081
Fixing OCP checks for rh-1.0 (#1259)
2022-10-11 09:18:49 +03:00

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---
controls:
version: rh-1.0
id: 1
text: "Master Node Security Configuration"
type: "master"
groups:
- id: 1.1
text: "Master Node Configuration Files"
checks:
- id: 1.1.1
text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
do
oc exec -n openshift-kube-apiserver $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml;
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.2
text: "Ensure that the API server pod specification file ownership is set to root:root (Manual)"
audit: |
for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
do
oc exec -n openshift-kube-apiserver $i -- \
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.3
text: "Ensure that the controller manager pod specification file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
do
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml;
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.4
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Manual)"
audit: |
for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
do
oc exec -n openshift-kube-controller-manager $i -- \
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.5
text: "Ensure that the scheduler pod specification file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
do
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml;
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.6
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Manual))"
audit: |
for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
do
oc exec -n openshift-kube-scheduler $i -- \
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.7
text: "Ensure that the etcd pod specification file permissions are set to 644 or more restrictive (Manual))"
audit: |
for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
do
oc rsh -n openshift-etcd $i stat -c "$i %n permissions=%a" /etc/kubernetes/manifests/etcd-pod.yaml
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.8
text: "Ensure that the etcd pod specification file ownership is set to root:root (Manual)"
audit: |
for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
do
oc rsh -n openshift-etcd $i stat -c "$i %n %U:%G" /etc/kubernetes/manifests/etcd-pod.yaml
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.9
text: "Ensure that the Container Network Interface file permissions are set to 644 or more restrictive (Manual)"
audit: |
# For CNI multus
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
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
# For SDN pods
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
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
# For OVS pods
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
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
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
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.10
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
audit: |
# For CNI multus
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
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
# For SDN pods
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
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
# For OVS pods in 4.5
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
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
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
# For OVS pods in 4.6 TBD
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.11
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Manual)"
audit: |
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
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "700"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.12
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Manual)"
audit: |
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
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.13
text: "Ensure that the admin.conf file permissions are set to 644 or more restrictive (Manual))"
audit: |
for i in $(oc get nodes -o name)
do
oc debug $i -- chroot /host stat -c "$i %n permissions=%a" /etc/kubernetes/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.14
text: "Ensure that the admin.conf file ownership is set to root:root (Manual)"
audit: |
for i in $(oc get nodes -o name)
do
oc debug $i -- chroot /host stat -c "$i %n %U:%G" /etc/kubernetes/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.15
text: "Ensure that the scheduler.conf file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
do
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.16
text: "Ensure that the scheduler.conf file ownership is set to root:root (Manual)"
audit: |
for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
do
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.17
text: "Ensure that the controller-manager.conf file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
do
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.18
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Manual)"
audit: |
for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
do
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
done 2>/dev/null
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.19
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Manual)"
audit: |
# Should return root:root for all files and directories
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
do
# echo $i static-pod-certs
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" {} \;
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" {} \;
# echo $i static-pod-resources
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" {} \;
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" {} \;
done
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.20
text: "Ensure that the OpenShift PKI certificate file permissions are set to 644 or more restrictive (Manual)"
audit: |
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
do
# echo $i static-pod-certs
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" {} \;
done
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.1.21
text: "Ensure that the OpenShift PKI key file permissions are set to 600 (Manual)"
audit: |
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
do
# echo $i static-pod-certs
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" {} \;
done
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "600"
remediation: |
No remediation required; file permissions are managed by the operator.
scored: false
- id: 1.2
text: "API Server"
checks:
- id: 1.2.1
text: "Ensure that anonymous requests are authorized (Manual)"
audit: |
# To verify that userGroups include system:unauthenticated
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.auditConfig.policyConfiguration.rules[]?'
# To verify that userGroups include system:unauthenticated
oc get configmap config -n openshift-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.auditConfig.policyConfiguration.rules[]?.userGroups'
# To verify RBAC is enabled
oc get clusterrolebinding
oc get clusterrole
oc get rolebinding
oc get role
tests:
test_items:
- flag: "system:unauthenticated"
remediation: |
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: |
oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["root-ca-file"][]'
tests:
test_items:
- flag: "/etc/kubernetes/static-pod-resources/configmaps/serviceaccount-ca/ca-bundle.crt"
remediation: |
None required.
Certificates for OpenShift platform components are automatically created and rotated by the OpenShift Container Platform.
scored: false
- id: 1.3.6
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
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