mirror of
https://github.com/aquasecurity/kube-bench.git
synced 2024-11-26 01:49:28 +00:00
ab3881420c
* First draft of AKS configuration checks. * Updated Azure Configurations. Added more policy checks. * Finalized cfg components for AKS. * Fixed targets for aks-1.0 in common_test.go * Fixed yaml linting issues. * Fixed white space yaml linkting issues in policies.yaml * Fixed white space yaml linting issues in policies.yaml
257 lines
11 KiB
YAML
257 lines
11 KiB
YAML
---
|
|
controls:
|
|
version: "aks-1.0"
|
|
id: 4
|
|
text: "Kubernetes Policies"
|
|
type: "policies"
|
|
groups:
|
|
- id: 4.1
|
|
text: "RBAC and Service Accounts"
|
|
checks:
|
|
- id: 4.1.1
|
|
text: "Ensure that the cluster-admin role is only used where required (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
|
if they need this role or if they could use a role with fewer privileges.
|
|
Where possible, first bind users to a lower privileged role and then remove the
|
|
clusterrolebinding to the cluster-admin role :
|
|
kubectl delete clusterrolebinding [name]
|
|
scored: false
|
|
|
|
- id: 4.1.2
|
|
text: "Minimize access to secrets (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Where possible, remove get, list and watch access to secret objects in the cluster.
|
|
scored: false
|
|
|
|
- id: 4.1.3
|
|
text: "Minimize wildcard use in Roles and ClusterRoles (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Where possible replace any use of wildcards in clusterroles and roles with specific
|
|
objects or actions.
|
|
scored: false
|
|
|
|
- id: 4.1.4
|
|
text: "Minimize access to create pods (Not Scored)"
|
|
type: "manual"
|
|
Remediation: |
|
|
Where possible, remove create access to pod objects in the cluster.
|
|
scored: false
|
|
|
|
- id: 4.1.5
|
|
text: "Ensure that default service accounts are not actively used. (Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
|
to the Kubernetes API server.
|
|
Modify the configuration of each default service account to include this value
|
|
automountServiceAccountToken: false
|
|
scored: true
|
|
|
|
- id: 4.1.6
|
|
text: "Ensure that Service Account Tokens are only mounted where necessary (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Modify the definition of pods and service accounts which do not need to mount service
|
|
account tokens to disable it.
|
|
scored: false
|
|
|
|
- id: 4.2
|
|
text: "Pod Security Policies"
|
|
checks:
|
|
- id: 4.2.1
|
|
text: "Minimize the admission of privileged containers (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to disallow running of privileged containers. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.2
|
|
text: "Disallow shared usage of host namespaces."
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to disallow shared usage of host namespaces. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.3
|
|
text: "Restrict all usage of host networking and ports"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict all usage of host networking and ports. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.4
|
|
text: "Restrict any usage of the host filesystem."
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict all usage of host networking and ports. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.5
|
|
text: "Restrict Linux capabilities to the default set."
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict Linux capabilities to the default set. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.6
|
|
text: "Restrict usage of defined volume types"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict usage of defined volume types. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.7
|
|
text: "Restrict the user and group IDs of the container"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict the user and group IDs of the container. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.8
|
|
text: "Restrict allocating an FSGroup that owns the pod's volumes"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to restrict allocating an FSGroup that owns the pod's volumes. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives
|
|
scored: false
|
|
|
|
- id: 4.2.9
|
|
text: "Requires seccomp profile"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to requires seccomp profile. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#built-in-policy-initiatives.
|
|
scored: false
|
|
|
|
- id: 4.2.10
|
|
text: "Define the AppArmor profile used by containers"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy to define the AppArmor profile used by containers. See https://docs.microsoft.com/en-us/azure/aks/use-pod-security-on-azure-policy#additional-optional-policies.
|
|
scored: false
|
|
|
|
- id: 4.3
|
|
text: "Network Policies and CNI"
|
|
checks:
|
|
- id: 4.3.1
|
|
text: "Ensure that the CNI in use supports Network Policies (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
To use a CNI plugin with Network Policy, enable Network Policy in AKS. See Recommendation 6.4.4.
|
|
scored: false
|
|
|
|
- id: 4.3.2
|
|
text: "Ensure that all Namespaces have Network Policies defined (Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Follow the documentation and create NetworkPolicy objects as you need them.
|
|
scored: false
|
|
|
|
- id: 4.4
|
|
text: "Secrets Management"
|
|
checks:
|
|
- id: 4.4.1
|
|
text: "Prefer using secrets as files over secrets as environment variables (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
If possible, rewrite application code to read secrets from mounted secret files, rather than
|
|
from environment variables.
|
|
scored: false
|
|
|
|
- id: 4.4.2
|
|
text: "Consider external secret storage (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Use the Azure Key Vault with Secrets Store CSI Driver to retrieve secrets from Azure Key Vault and load it in the pod. See https://github.com/Azure/secrets-store-csi-driver-provider-azure.
|
|
scored: false
|
|
|
|
- id: 4.5
|
|
text: "Extensible Admission Control"
|
|
checks:
|
|
- id: 4.5.1
|
|
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Follow the Kubernetes documentation and setup image provenance.
|
|
scored: false
|
|
|
|
- id: 4.6
|
|
text: "General Policies"
|
|
checks:
|
|
- id: 4.6.1
|
|
text: "Create administrative boundaries between resources using namespaces (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Follow the documentation and create namespaces for objects in your deployment as you need
|
|
them.
|
|
scored: false
|
|
|
|
- id: 4.6.2
|
|
text: "Ensure that the seccomp profile is set to docker/default in your pod definitions (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Seccomp is an alpha feature currently. By default, all alpha features are disabled. So, you
|
|
would need to enable alpha features in the apiserver by passing "--feature-
|
|
gates=AllAlpha=true" argument.
|
|
Edit the /etc/kubernetes/apiserver file on the master node and set the KUBE_API_ARGS
|
|
parameter to "--feature-gates=AllAlpha=true"
|
|
KUBE_API_ARGS="--feature-gates=AllAlpha=true"
|
|
Based on your system, restart the kube-apiserver service. For example:
|
|
systemctl restart kube-apiserver.service
|
|
Use annotations to enable the docker/default seccomp profile in your pod definitions. An
|
|
example is as below:
|
|
apiVersion: v1
|
|
kind: Pod
|
|
metadata:
|
|
name: trustworthy-pod
|
|
annotations:
|
|
seccomp.security.alpha.kubernetes.io/pod: docker/default
|
|
spec:
|
|
containers:
|
|
- name: trustworthy-container
|
|
image: sotrustworthy:latest
|
|
scored: false
|
|
|
|
- id: 4.6.3
|
|
text: "Apply Security Context to Your Pods and Containers (Not Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Follow the Kubernetes documentation and apply security contexts to your pods. For a
|
|
suggested list of security contexts, you may refer to the CIS Security Benchmark for Docker
|
|
Containers.
|
|
scored: false
|
|
|
|
- id: 4.6.4
|
|
text: "The default namespace should not be used (Scored)"
|
|
type: "manual"
|
|
remediation: |
|
|
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
|
resources and that all new resources are created in a specific namespace.
|
|
scored: false
|
|
|
|
- id: 4.7
|
|
text: "Azure Policy Controls for ACR"
|
|
checks:
|
|
- id: 4.7.1
|
|
text: "Container Registry should use a virtual network service endpoint"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy for Container Registry should use a virtual network service endpoint. See https://docs.microsoft.com/en-us/azure/container-registry/security-controls-policy#azure-security-benchmark
|
|
scored: false
|
|
|
|
- id: 4.7.2
|
|
text: "Container registries should not allow unrestricted network access"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy for Container registries should not allow unrestricted network access. See https://docs.microsoft.com/en-us/azure/container-registry/container-registry-azure-policy#built-in-policy-definitions
|
|
scored: false
|
|
|
|
- id: 4.7.3
|
|
text: "Container registries should use private links"
|
|
type: "manual"
|
|
remediation: |
|
|
Implement Azure Policy for Container registries should use private links. See https://docs.microsoft.com/en-us/azure/container-registry/container-registry-azure-policy#built-in-policy-definitions
|
|
scored: false
|