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kube-hunter

title: kube-hunter category: scanner type: Kubernetes state: released appVersion: 0.3.1 usecase: Kubernetes Vulnerability Scanner custom_edit_url: >-

https://github.com/secureCodeBox/secureCodeBox#main/edit/main/scanners/kube-hunter/README.md.gotmpl

kube-hunter hunts for security weaknesses in Kubernetes clusters. The tool was developed to increase awareness and visibility for security issues in Kubernetes environments. You should NOT run kube-hunter on a Kubernetes cluster that you don't own!

To learn more about the kube-hunter scanner itself visit kube-hunter GitHub or kube-hunter Website.

Deployment

The kube-hunter ScanType can be deployed via helm:

helm upgrade --install kube-hunter secureCodeBox/kube-hunter

Scanner Configuration

The following security scan configuration example are based on the kube-hunter Documentation, please take a look at the original documentation for more configuration examples.

  • To specify remote machines for hunting, select option 1 or use the --remote option. Example: kube-hunter --remote some.node.com
  • To specify interface scanning, you can use the --interface option (this will scan all the machine's network interfaces). Example: kube-hunter --interface
  • To specify a specific CIDR to scan, use the --cidr option. Example: kube-hunter --cidr 192.168.0.0/24

Chart Configuration

KeyTypeDefaultDescription
cascadingRules.enabledbooltrueEnables or disables the installation of the default cascading rules for this scanner
parser.image.repositorystring"docker.io/securecodebox/parser-kube-hunter"Parser image repository
parser.image.tagstringdefaults to the charts versionParser image tag
parser.ttlSecondsAfterFinishedstringnilseconds after which the kubernetes job for the parser will be deleted. Requires the Kubernetes TTLAfterFinished controller: https://kubernetes.io/docs/concepts/workloads/controllers/ttlafterfinished/
scanner.backoffLimitint3There are situations where you want to fail a scan Job after some amount of retries due to a logical error in configuration etc. To do so, set backoffLimit to specify the number of retries before considering a scan Job as failed. (see: https://kubernetes.io/docs/concepts/workloads/controllers/job/#pod-backoff-failure-policy)
scanner.envlist[]Optional environment variables mapped into each scanJob (see: https://kubernetes.io/docs/tasks/inject-data-application/define-environment-variable-container/)
scanner.extraContainerslist[]Optional additional Containers started with each scanJob (see: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/)
scanner.extraVolumeMountslist[]Optional VolumeMounts mapped into each scanJob (see: https://kubernetes.io/docs/concepts/storage/volumes/)
scanner.extraVolumeslist[]Optional Volumes mapped into each scanJob (see: https://kubernetes.io/docs/concepts/storage/volumes/)
scanner.image.repositorystring"docker.io/securecodebox/scanner-kube-hunter"Container Image to run the scan
scanner.image.tagstringnildefaults to the charts version
scanner.nameAppendstringnilappend a string to the default scantype name.
scanner.resourcesobject{}CPU/memory resource requests/limits (see: https://kubernetes.io/docs/tasks/configure-pod-container/assign-memory-resource/, https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/)
scanner.securityContextobject{}Optional securityContext set on scanner container (see: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/)
scanner.ttlSecondsAfterFinishedstringnilseconds after which the kubernetes job for the scanner will be deleted. Requires the Kubernetes TTLAfterFinished controller: https://kubernetes.io/docs/concepts/workloads/controllers/ttlafterfinished/

Examples

in-cluster

# SPDX-FileCopyrightText: 2020 iteratec GmbH
#
# SPDX-License-Identifier: Apache-2.0

apiVersion: "execution.securecodebox.io/v1"
kind: Scan
metadata:
  name: "kube-hunter-in-cluster"
spec:
  scanType: "kube-hunter"
  parameters:
    - "--pod"
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