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kube-bench/cfg/rh-0.7/master.yaml

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---
controls:
version: "rh-0.7"
id: 1
text: "Securing the OpenShift Master"
type: "master"
groups:
- id: 1
text: "Protecting the API Server"
checks:
- id: 1.1
text: "Maintain default behavior for anonymous access"
type: "skip"
scored: true
- id: 1.2
text: "Verify that the basic-auth-file method is not enabled"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.basic-auth-file}"
set: false
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml and
remove the basic-auth-file entry.
kubernetesMasterConfig:
 apiServerArguments:
   basic-auth-file:
   - /path/to/any/file
scored: true
- id: 1.3
text: "Insecure Tokens"
type: "skip"
scored: true
- id: 1.4
text: "Secure communications between the API server and master nodes"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.kubeletClientInfo.ca}"
compare:
op: has
value: "ca-bundle.crt"
- path: "{.kubeletClientInfo.certFile}"
compare:
op: has
value: "master.kubelet-client.crt"
- path: "{.kubeletClientInfo.keyFile}"
compare:
op: has
value: "master.kubelet-client.key"
set: true
- path: "{.kubeletClientInfo.port}"
compare:
op: eq
value: "10250"
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and change it to match the below.
kubeletClientInfo:
 ca: ca-bundle.crt
 certFile: master.kubelet-client.crt
 keyFile: master.kubelet-client.key
 port: 10250
scored: true
- id: 1.5
text: "Prevent insecure bindings"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.insecure-bind-address}"
set: false
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and remove the insecure-bind-address entry.
kubernetesMasterConfig:
 apiServerArguments:
   insecure-bind-address:
   - 127.0.0.1
scored: true
- id: 1.6
text: "Prevent insecure port access"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.insecure-port}"
set: false
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and remove the insecure-port entry.
kubernetesMasterConfig:
 apiServerArguments:
  insecure-port:
 - 0
scored: true
- id: 1.7
text: "Use Secure Ports for API Server Traffic"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.secure-port}"
set: false
- path: "{.kubernetesMasterConfig.apiServerArguments.secure-port}"
compare:
op: noteq
value: "0"
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and either remove the secure-port parameter or set it to a different (non-zero)
desired port.
kubernetesMasterConfig:
 apiServerArguments:
  secure-port:
 - 8443
scored: true
- id: 1.8
text: "Do not expose API server profiling data"
type: "skip"
scored: true
- id: 1.9
text: "Verify repair-malformed-updates argument for API compatibility"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.repair-malformed-updates}"
set: false
- path: "{.repair-malformed-updates}"
compare:
op: eq
value: "true"
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and remove the repair-malformed-updates entry or set repair-malformed-updates=true.
scored: true
- id: 1.10
text: "Verify that the AlwaysAdmit admission controller is disabled"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.AlwaysAdmit}"
set: false
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and remove the entry below.
AlwaysAdmit:
configuration:
kind: DefaultAdmissionConfig
apiVersion: v1
disable: false
scored: true
- id: 1.11
text: "Manage the AlwaysPullImages admission controller"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.admissionConfig.pluginConfig.configuration.disable}"
compare:
op: eq
value: "false"
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and add the entry below.
admissionConfig:
pluginConfig:
AlwaysPullImages:
configuration:
kind: DefaultAdmissionConfig
apiVersion: v1
disable: false
scored: true
- id: 1.12
text: "Use Security Context Constraints instead of DenyEscalatingExec admission"
type: "skip"
scored: true
- id: 1.13
text: "Use Security Context Constraints instead of the SecurityContextDeny admission controller"
type: "skip"
scored: true
- id: 1.14
text: "Manage the NamespaceLifecycle admission controller"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.NamespaceLifecycle}"
set: false
remediation: |
Edit the kubernetes master config file /etc/origin/master/master-config.yaml
and remove the following entry.
NamespaceLifecycle:
configuration:
kind: DefaultAdmissionConfig
apiVersion: v1
disable: true
scored: true
- id: 1.15
text: "Configure API server auditing - audit log file path"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.auditConfig.enabled}"
compare:
op: eq
value: "true"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the following entry and restart the API server.
auditConfig:
auditFilePath: ""/etc/origin/master/audit-ocp.log""
enabled: true
maximumFileRetentionDays: 30
maximumFileSizeMegabytes: 10
maximumRetainedFiles: 10
Make the same changes in the inventory/ansible variables so the changes are not
lost when an upgrade occurs.
scored: true
- id: 1.16
text: "Configure API server auditing - audit log retention"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.auditConfig.maximumFileRetentionDays}"
compare:
op: gte
value: 30
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml,
update the maximumFileRetentionDays entry and restart the API server.
auditConfig:
auditFilePath: ""/etc/origin/master/audit-ocp.log""
enabled: true
maximumFileRetentionDays: 30
maximumFileSizeMegabytes: 10
maximumRetainedFiles: 10
Make the same changes in the inventory/ansible variables so the changes are not
lost when an upgrade occurs.
scored: true
- id: 1.17
text: "Configure API server auditing - audit log backup retention"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.auditConfig.maximumRetainedFiles}"
compare:
op: eq
value: "10"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the maximumRetainedFiles entry,
set enabled to true and restart the API server.
auditConfig:
auditFilePath: ""/etc/origin/master/audit-ocp.log""
enabled: true
maximumFileRetentionDays: 30
maximumFileSizeMegabytes: 10
maximumRetainedFiles: 10
Make the same changes in the inventory/ansible variables so the changes are not
lost when an upgrade occurs.
scored: true
- id: 1.18
text: "Configure audit log file size"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.auditConfig.maximumFileSizeMegabytes}"
compare:
op: eq
value: "30"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the maximumFileSizeMegabytes entry,
set enabled to true and restart the API server.
auditConfig:
auditFilePath: ""/etc/origin/master/audit-ocp.log""
enabled: true
maximumFileRetentionDays: 30
maximumFileSizeMegabytes: 10
maximumRetainedFiles: 10
Make the same changes in the inventory/ansible variables so the changes are not
lost when an upgrade occurs.
scored: true
- id: 1.19
text: "Verify that authorization-mode is not set to AlwaysAllow"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.authorization-mode}"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the authorization-mode
entry.
kubernetesMasterConfig:
 apiServerArguments:
   authorization-mode:
   - AllowAll
scored: true
- id: 1.20
text: "Verify that the token-auth-file flag is not set"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.token-auth-file}"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the token-auth-file
entry under apiserverArguments section.
kubernetesMasterConfig:
 apiServerArguments:
   token-auth-file:
   - /path/to/file
scored: true
- id: 1.21
text: "Verify the API server certificate authority"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.kubelet-certificat-authority}"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the following
configuration under apiserverArguments section.
kubernetesMasterConfig:
 apiServerArguments:
   kubelet-certificat-authority:
   - /path/to/ca
scored: true
- id: 1.22
text: "Verify the API server client certificate and client key"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.kubeletClientInfo.keyFile}"
compare:
op: eq
value: "master.kubelet-client.key"
- path: "{.kubeletClientInfo.certFile}"
compare:
op: eq
value: "master.kubelet-client.crt"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and add the following
configuration under kubeletClientInfo
kubeletClientInfo:
 ca: ca-bundle.crt
 certFile: master.kubelet-client.crt
 keyFile: master.kubelet-client.key
port: 10250
scored: true
- id: 1.23
text: "Verify that the service account lookup flag is not set"
type: "skip"
scored: true
- id: 1.24
text: "Verify the PodSecurityPolicy is disabled to ensure use of SecurityContextConstraints"
type: "skip"
scored: true
- id: 1.25
text: "Verify that the service account key file argument is not set"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.serviceAccountConfig.privateKeyFile}"
compare:
op: eq
value: "serviceaccounts.private.key"
- path: "{.serviceAccountConfig.publicKeyFiles}"
compare:
op: has
value: "serviceaccounts.public.key"
remediation: |
OpenShift API server does not use the service-account-key-file argument.
Even if value is set in master-config.yaml, it will not be used to verify
service account tokens, as it is in upstream Kubernetes. The ServiceAccount
token authenticator is configured with serviceAccountConfig.publicKeyFiles in
the master-config.yaml. OpenShift does not reuse the apiserver TLS key.
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set the privateKeyFile
and publicKeyFile configuration under serviceAccountConfig.
serviceAccountConfig:
 limitSecretReferences: false
 managedNames:
- default
 - builder
 - deployer
 masterCA: ca-bundle.crt
  privateKeyFile: serviceaccounts.private.key
 publicKeyFiles:
 - serviceaccounts.public.key
Verify that privateKeyFile and publicKeyFile exist and set.
scored: true
- id: 1.26
text: "Verify the certificate and key used for communication with etcd"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.etcdClientInfo.certFile}"
compare:
op: eq
value: "master.etcd-client.crt"
- path: "{.etcdClientInfo.keyFile}"
compare:
op: eq
value: "master.etcd-client.key"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set keyFile and certFile
under etcdClientInfo like below.
etcdClientInfo:
 ca: master.etcd-ca.crt
certFile: master.etcd-client.crt
keyFile: master.etcd-client.key
scored: true
- id: 1.27
text: "Verify that the ServiceAccount admission controller is enabled"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.ServiceAccount.configuration.disable}"
set: false
- path: "{.ServiceAccount.configuration.disable}"
compare:
op: eq
value: "false"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable ServiceAccount
admission control policy.
ServiceAccount:
configuration:
kind: DefaultAdmissionConfig
apiVersion: v1
disable: false
scored: true
- id: 1.28
text: "Verify the certificate and key used to encrypt API server traffic"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.servingInfo.certFile}"
compare:
op: eq
value: "master.server.crt"
- path: "{.servingInfo.keyFile}"
compare:
op: eq
value: "master.server.key"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set keyFile and certFile under servingInfo.
servingInfo:
 bindAddress: 0.0.0.0:8443
  bindNetwork: tcp4
certFile: master.server.crt
clientCA: ca.crt
keyFile: master.server.key
maxRequestsInFlight: 500
requestTimeoutSeconds: 3600
scored: true
- id: 1.29
text: "Verify that the --client-ca-file argument is not set"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.servingInfo.clientCA}"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set clientCA under servingInfo.
servingInfo:
 bindAddress: 0.0.0.0:8443
  bindNetwork: tcp4
certFile: master.server.crt
clientCA: ca.crt
keyFile: master.server.key
maxRequestsInFlight: 500
requestTimeoutSeconds: 3600
scored: true
- id: 1.30
text: "Verify the CA used for communication with etcd"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.etcdClientInfo.ca}"
compare:
op: eq
value: "master.etcd-ca.crt"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set ca under etcdClientInfo.
etcdClientInfo:
  ca: master.etcd-ca.crt
certFile: master.etcd-client.crt
keyFile: master.etcd-client.key
scored: true
- id: 1.31
text: "Verify that the authorization-mode argument is not set"
type: "skip"
scored: true
- id: 1.32
text: "Verify that the NodeRestriction admission controller is enabled"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.NodeRestriction.configuration.disable}"
set: false
- path: "{.NodeRestriction.configuration.disable}"
compare:
op: eq
value: "false"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable NodeRestriction ca under etcdClientInfo.
NodeRestriction:
configuration:
kind: DefaultAdmissionConfig
apiVersion: v1
disable: false
scored: true
- id: 1.33
text: "Configure encryption of data at rest in etcd datastore"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.experimental-encryption-provider-config}"
remediation: |
Follow the instructions in the documentation to configure encryption.
https://docs.openshift.com/container-platform/3.10/admin_guide/encrypting_data.html
scored: true
- id: 1.34
text: "Set the encryption provider to aescbc for etcd data at rest"
audit_config: "grep -A1 experimental-encryption-provider-config /etc/origin/master/master-config.yaml | sed -n '2p' | awk '{ print $2 }' | xargs cat"
tests:
test_items:
- path: "{.providers.aescbc.experimental-encryption-provider-config}"
compare:
op: has
value: "aescbc"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set aescbc as the first provider in encryption provider config.
See https://docs.openshift.com/container-platform/3.10/admin_guide/encrypting_data.html.
scored: true
- id: 1.35
text: "Enable the EventRateLimit plugin"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.admissionConfig.pluginConfig.AlwaysPullImages.configuration.disable}"
compare:
op: eq
value: "false"
remediation: |
Follow the documentation to enable the EventRateLimit plugin.
https://docs.openshift.com/container-platform/3.10/architecture/additional_concepts/admission_controllers.html#admission-controllers-general-admission-rules
scored: true
- id: 1.36
text: "Configure advanced auditing"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.kubernetesMasterConfig.apiServerArguments.feature-gates.AdvancedAuditing}"
compare:
op: eq
value: "true"
- path: "{.kubernetesMasterConfig.apiServerArguments.feature-gates.AdvancedAuditing}"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable AdvancedAuditing,
kubernetesMasterConfig:
 apiServerArguments:
feature-gates:
- AdvancedAuditing=true
scored: true
# Review 1.1.37 in Aquasec shared doc, the tests are net zero.
- id: 1.37
text: "Adjust the request timeout argument for your cluster resources"
audit: "grep request-timeout /etc/origin/master/master-config.yaml"
type: "manual"
remediation: |
[Manual test]
change the request-timeout value in the  /etc/origin/master/master-config.yaml
scored: true
- id: 2
text: "Scheduler"
checks:
- id: 2.1
text: "Verify that Scheduler profiling is not exposed to the web"
type: "skip"
scored: true
- id: 3
text: "Controller Manager"
checks:
- id: 3.1
text: "Adjust the terminated-pod-gc-threshold argument as needed"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubernetesMasterConfig.controllerArguments.terminated-pod-gc-threshold}"
compare:
op: eq
value: "12500"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable terminated-pod-gc-threshold.
kubernetesMasterConfig:
 controllerArguments:
    terminated-pod-gc-threshold:
   - true
Enabling the "terminated-pod-gc-threshold" settings is optional.
scored: true
- id: 3.2
text: "Verify that Controller profiling is not exposed to the web"
type: "skip"
scored: true
- id: 3.3
text: "Verify that the --use-service-account-credentials argument is set to true"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: or
test_items:
- path: "{.kubernetesMasterConfig.controllerArguments.use-service-account-credentials}"
set: false
- path: "{.kubernetesMasterConfig.controllerArguments.use-service-account-credentials}"
compare:
op: eq
value: "true"
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and set use-service-account-credentials
to true under controllerArguments section.
kubernetesMasterConfig:
 controllerArguments:
    use-service-account-credentials:
    - true
scored: true
- id: 3.4
text: "Verify that the --service-account-private-key-file argument is set as appropriate"
audit: |
grep -A9 serviceAccountConfig /etc/origin/master/master-config.yaml | grep privateKeyFile;
grep -A2 service-account-private-key-file /etc/origin/master/master-config.yaml
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- flag: "privateKeyFile: serviceaccounts.private.key"
path: "{.serviceAccountConfig.privateKeyFile}"
compare:
op: eq
value: "serviceaccounts.private.key"
- flag: "service-account-private-key-file"
set: false
remediation: |
Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove service-account-private-key-file
scored: true
- id: 3.5
text: "Verify that the --root-ca-file argument is set as appropriate"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
bin_op: and
test_items:
- path: "{.serviceAccountConfig.root-ca-file}"
compare:
op: eq
value: "/etc/origin/master/ca-bundle.crt"
- path: "{.serviceAccountConfig.masterCA}"
compare:
op: eq
value: "ca-bundle.crt"
remediation: |
Reset to OpenShift defaults OpenShift starts kube-controller-manager with
root-ca-file=/etc/origin/master/ca-bundle.crt by default. OpenShift Advanced
Installation creates this certificate authority and configuration without any
configuration required.
https://docs.openshift.com/container-platform/3.10/admin_guide/service_accounts.html"
scored: true
- id: 3.6
text: "Verify that Security Context Constraints are applied to Your Pods and Containers"
type: "skip"
scored: false
- id: 3.7
text: "Manage certificate rotation"
audit_config: "cat /etc/origin/master/master-config.yaml"
tests:
test_items:
- path: "{.kubeletArguments.feature-gates.RotateKubeletServerCertificate}"
compare:
op: eq
value: "true"
remediation: |
If you decide not to enable the RotateKubeletServerCertificate feature,
be sure to use the Ansible playbooks provided with the OpenShift installer to
automate re-deploying certificates.
scored: true
- id: 4
text: "Configuration Files"
checks:
- id: 4.1
text: "Verify the OpenShift default permissions for the API server pod specification file"
audit: "stat -c permissions=%a /etc/origin/node/pods/apiserver.yaml"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "600"
remediation: |
Run the below command.
chmod 600 /etc/origin/node/pods/apiserver.yaml
scored: true
- id: 4.2
text: "Verify the OpenShift default file ownership for the API server pod specification file"
audit: "stat -c %U:%G /etc/origin/node/pods/apiserver.yaml"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/node/pods/apiserver.yaml
scored: true
- id: 4.3
text: "Verify the OpenShift default file permissions for the controller manager pod specification file"
audit: "stat -c permissions=%a /etc/origin/node/pods/controller.yaml"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "600"
remediation: |
Run the below command on the master node.
chmod 600 /etc/origin/node/pods/controller.yaml
scored: true
- id: 4.4
text: "Verify the OpenShift default ownership for the controller manager pod specification file"
audit: "stat -c %U:%G /etc/origin/node/pods/controller.yaml"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/node/pods/controller.yaml
scored: true
- id: 4.5
text: "Verify the OpenShift default permissions for the scheduler pod specification file"
audit: "stat -c permissions=%a /etc/origin/node/pods/controller.yaml"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "600"
remediation: |
Run the below command.
chmod 600 stat -c permissions=%a /etc/origin/node/pods/controller.yaml
scored: true
- id: 4.6
text: "Verify the scheduler pod specification file ownership set by OpenShift"
audit: "stat -c %U:%G /etc/origin/node/pods/controller.yaml"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/node/pods/controller.yaml
scored: true
- id: 4.7
text: "Verify the OpenShift default etcd pod specification file permissions"
audit: "stat -c permissions=%a /etc/origin/node/pods/etcd.yaml"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "600"
remediation: |
Run the below command.
chmod 600 /etc/origin/node/pods/etcd.yaml
scored: true
- id: 4.8
text: "Verify the OpenShift default etcd pod specification file ownership"
audit: "stat -c %U:%G /etc/origin/node/pods/etcd.yaml"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/node/pods/etcd.yaml
scored: true
- id: 4.9
text: "Verify the default OpenShift Container Network Interface file permissions"
audit: "stat -c permissions=%a /etc/origin/openvswitch/ /etc/cni/net.d/"
use_multiple_values: true
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
Run the below command.
chmod 644 -R /etc/origin/openvswitch/ /etc/cni/net.d/
scored: true
- id: 4.10
text: "Verify the default OpenShift Container Network Interface file ownership"
audit: "stat -c %U:%G /etc/origin/openvswitch/ /etc/cni/net.d/"
use_multiple_values: true
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/openvswitch/ /etc/cni/net.d/
scored: true
- id: 4.11
text: "Verify the default OpenShift etcd data directory permissions"
audit: "stat -c permissions=%a /var/lib/etcd"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "700"
remediation: |
On the etcd server node, get the etcd data directory, passed as an argument --data-dir ,
from the below command:
ps -ef | grep etcd
Run the below command (based on the etcd data directory found above). For example,
chmod 700 /var/lib/etcd
scored: true
- id: 4.12
text: "Verify the default OpenShift etcd data directory ownership"
audit: "stat -c %U:%G /var/lib/etcd"
tests:
test_items:
- flag: "etcd:etcd"
remediation: |
Run the below command on the master node.
chown etcd:etcd /var/lib/etcd
scored: true
- id: 4.13
text: "Verify the default OpenShift admin.conf file permissions"
audit: "stat -c permissions=%a /etc/origin/master/admin.kubeconfig"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
Run the below command.
chmod 644 /etc/origin/master/admin.kubeconfig"
scored: true
- id: 4.14
text: "Verify the default OpenShift admin.conf file ownership"
audit: "stat -c %U:%G /etc/origin/master/admin.kubeconfig"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/master/admin.kubeconfig
scored: true
- id: 4.15
text: "Verify the default OpenShift scheduler.conf file permissions"
audit: "stat -c permissions=%a /etc/origin/master/openshift-master.kubeconfig"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
Run the below command.
chmod 644 /etc/origin/master/openshift-master.kubeconfig
scored: true
- id: 4.16
text: "Verify the default OpenShift scheduler.conf file ownership"
audit: "stat -c %U:%G /etc/origin/master/openshift-master.kubeconfig"
tests:
test_items:
- flag: "root:root"
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/master/openshift-master.kubeconfig
scored: true
- id: 4.17
text: "Verify the default Openshift controller-manager.conf file permissions"
audit: "stat -c permissions=%a /etc/origin/master/openshift-master.kubeconfig"
tests:
test_items:
- flag: "permissions"
compare:
op: bitmask
value: "644"
remediation: |
Run the below command.
chmod 644 /etc/origin/master/openshift-master.kubeconfig
scored: true
- id: 4.18
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G /etc/origin/master/openshift-master.kubeconfig"
tests:
test_items:
- flag: "root:root"
compare:
op: eq
value: "root:root"
set: true
remediation: |
Run the below command on the master node.
chown root:root /etc/origin/master/openshift-master.kubeconfig
scored: true
- id: 5
text: "Etcd"
checks:
- id: 5.1
text: "Verify the default OpenShift cert-file and key-file configuration"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_CERT_FILE=/etc/etcd/server.crt /proc/1/environ; /usr/local/bin/master-exec etcd etcd grep ETCD_KEY_FILE=/etc/etcd/server.key /proc/1/environ; grep ETCD_CERT_FILE=/etc/etcd/server.crt /etc/etcd/etcd.conf; grep ETCD_KEY_FILE=/etc/etcd/server.key /etc/etcd/etcd.conf'"
tests:
bin_op: and
test_items:
- flag: "Binary file /proc/1/environ matches"
- flag: "ETCD_CERT_FILE"
compare:
op: eq
value: "/etc/etcd/server.crt"
- flag: "ETCD_KEY_FILE"
compare:
op: eq
value: "/etc/etcd/server.key"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.2
text: "Verify the default OpenShift setting for the client-cert-auth argument"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_CLIENT_CERT_AUTH=true /proc/1/environ; grep ETCD_CLIENT_CERT_AUTH /etc/etcd/etcd.conf'"
tests:
bin_op: and
test_items:
- flag: "Binary file /proc/1/environ matches"
- flag: "ETCD_CLIENT_CERT_AUTH"
compare:
op: eq
value: "true"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.3
text: "Verify the OpenShift default values for etcd_auto_tls"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_AUTO_TLS /proc/1/environ; grep ETCD_AUTO_TLS /etc/etcd/etcd.conf'"
tests:
bin_op: or
test_items:
- flag: "ETCD_AUTO_TLS"
compare:
op: eq
value: "false"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.4
text: "Verify the OpenShift default peer-cert-file and peer-key-file arguments for etcd"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_CERT_FILE=/etc/etcd/peer.crt /proc/1/environ; /usr/local/bin/master-exec etcd etcd grep ETCD_PEER_KEY_FILE=/etc/etcd/peer.key /proc/1/environ; grep ETCD_PEER_CERT_FILE /etc/etcd/etcd.conf; grep ETCD_PEER_KEY_FILE /etc/etcd/etcd.conf'"
tests:
bin_op: and
test_items:
- flag: "Binary file /proc/1/environ matches"
- flag: "ETCD_PEER_CERT_FILE"
compare:
op: eq
value: "/etc/etcd/peer.crt"
- flag: "ETCD_PEER_KEY_FILE"
compare:
op: eq
value: "/etc/etcd/peer.key"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.5
text: "Verify the OpenShift default configuration for the peer-client-cert-auth"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_CLIENT_CERT_AUTH=true /proc/1/environ; grep ETCD_PEER_CLIENT_CERT_AUTH /etc/etcd/etcd.conf'"
tests:
bin_op: and
test_items:
- flag: "Binary file /proc/1/environ matches"
- flag: "ETCD_PEER_CLIENT_CERT_AUTH"
compare:
op: eq
value: "true"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.6
text: "Verify the OpenShift default configuration for the peer-auto-tls argument"
audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_AUTO_TLS /proc/1/environ; grep ETCD_PEER_AUTO_TLS /etc/etcd/etcd.conf'"
tests:
test_items:
- flag: "ETCD_PEER_AUTO_TLS"
compare:
op: noteq
value: "true"
remediation: |
Reset to the OpenShift default configuration.
scored: true
- id: 5.7
text: "Optionally modify the wal-dir argument"
type: "skip"
scored: true
- id: 5.8
text: "Optionally modify the max-wals argument"
type: "skip"
scored: true
- id: 5.9
text: "Verify the OpenShift default configuration for the etcd Certificate Authority"
audit: "openssl x509 -in /etc/origin/master/master.etcd-ca.crt -subject -issuer -noout | sed 's/@/ /'"
tests:
test_items:
- flag: "issuer= /CN=etcd-signer"
remediation: |
Reset to the OpenShift default configuration.
scored: false
- id: 6
text: "General Security Primitives"
checks:
- id: 6.1
text: "Ensure that the cluster-admin role is only used where required"
type: "manual"
remediation: |
[Manual test]
Review users, groups, serviceaccounts bound to cluster-admin:
oc get clusterrolebindings | grep cluster-admin
Review users and groups bound to cluster-admin and decide whether they require
such access. Consider creating least-privilege roles for users and service accounts
scored: false
- id: 6.2
text: "Verify Security Context Constraints as in use"
type: "manual"
remediation: |
[Manual test]
Review Security Context Constraints:
oc get scc
Use OpenShift's Security Context Constraint feature, which has been contributed
to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.
OpenShift ships with two SCCs: restricted and privileged.
The two default SCCs will be created when the master is started. The restricted
SCC is granted to all authenticated users by default.
https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html"
scored: false
- id: 6.3
text: "Use OpenShift projects to maintain boundaries between resources"
type: "manual"
remediation: |
[Manual test]
Review projects:
oc get projects
scored: false
- id: 6.4
text: "Create network segmentation using the Multi-tenant plugin or Network Policies"
type: "manual"
remediation: |
[Manual test]
Verify on masters the plugin being used:
grep networkPluginName /etc/origin/master/master-config.yaml
OpenShift provides multi-tenant networking isolation (using Open vSwich and
vXLAN), to segregate network traffic between containers belonging to different
tenants (users or applications) while running on a shared cluster. Red Hat also
works with 3rd-party SDN vendors to provide the same level of capabilities
integrated with OpenShift. OpenShift SDN is included a part of OpenShift
subscription.
OpenShift supports Kubernetes NetworkPolicy. Administrator must configure
NetworkPolicies if desired.
https://docs.openshift.com/container-platform/3.10/architecture/networking/sdn.html#architecture-additional-concepts-sdn
Ansible Inventory variable: os_sdn_network_plugin_name:
https://docs.openshift.com/container-platform/3.10/install/configuring_inventory_file.html
scored: false
- id: 6.5
text: "Enable seccomp and configure custom Security Context Constraints"
type: "manual"
remediation: |
[Manual test]
Verify SCCs that have been configured with seccomp:
oc get scc -ocustom-columns=NAME:.metadata.name,SECCOMP-PROFILES:.seccompProfiles
OpenShift does not enable seccomp by default. To configure seccomp profiles that
are applied to pods run by the SCC, follow the instructions in the
documentation:
https://docs.openshift.com/container-platform/3.9/admin_guide/seccomp.html#admin-guide-seccomp
scored: false
- id: 6.6
text: "Review Security Context Constraints"
type: "manual"
remediation: |
[Manual test]
Review SCCs:
oc describe scc
Use OpenShift's Security Context Constraint feature, which has been contributed
to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.
OpenShift ships with two SCCs: restricted and privileged. The two default SCCs
will be created when the master is started. The restricted SCC is granted to
all authenticated users by default.
All pods are run under the restricted SCC by default. Running a pod under any
other SCC requires an account with cluster admin capabilities to grant access
for the service account.
SecurityContextConstraints limit what securityContext is applied to pods and
containers.
https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html
scored: false
- id: 6.7
text: "Manage Image Provenance using ImagePolicyWebhook admission controller"
type: "manual"
remediation: |
[Manual test]
Review imagePolicyConfig in /etc/origin/master/master-config.yaml.
scored: false
- id: 6.8
text: "Configure Network policies as appropriate"
type: "manual"
remediation: |
[Manual test]
If ovs-networkplugin is used, review network policies:
oc get networkpolicies
OpenShift supports Kubernetes NetworkPolicy via ovs-networkpolicy plugin.
If choosing ovs-multitenant plugin, each namespace is isolated in its own
netnamespace by default.
scored: false
- id: 6.9
text: "Use Security Context Constraints as compensating controls for privileged containers"
type: "manual"
remediation: |
[Manual test]
1) Determine all sccs allowing privileged containers:
oc get scc -ocustom-columns=NAME:.metadata.name,ALLOWS_PRIVILEGED:.allowPrivilegedContainer
2) Review users and groups assigned to sccs allowing priviliged containers:
oc describe sccs <from (1)>
Use OpenShift's Security Context Constraint feature, which has been contributed
to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.
OpenShift ships with two SCCs: restricted and privileged. The two default SCCs
will be created when the master is started. The restricted SCC is granted to all
authenticated users by default.
Similar scenarios are documented in the SCC
documentation, which outlines granting SCC access to specific serviceaccounts.
Administrators may create least-restrictive SCCs based on individual container
needs.
For example, if a container only requires running as the root user, the anyuid
SCC can be used, which will not expose additional access granted by running
privileged containers.
https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html
scored: false
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