Kube v1.27.8, Falco module
This commit is contained in:
parent
ffcd94679b
commit
b5a90a6227
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@ -4,7 +4,7 @@
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set -x
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#VERSION="latest"
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KUBE_VERSION="v1.27.7"
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KUBE_VERSION="v1.27.8"
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WORKDIR=$(mktemp -p /tmp -d kubezero.XXX)
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SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
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@ -2,7 +2,7 @@ apiVersion: v2
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name: kubeadm
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description: KubeZero Kubeadm cluster config
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type: application
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version: 1.27.7
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version: 1.27.8
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home: https://kubezero.com
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icon: https://cdn.zero-downtime.net/assets/kubezero/logo-small-64.png
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keywords:
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@ -3,7 +3,7 @@ kind: Config
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clusters:
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- name: falco
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cluster:
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server: http://falco-control-plane-k8saudit-webhook:9765/k8s-audit
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server: http://falco-k8saudit-webhook:9765/k8s-audit
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contexts:
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- context:
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cluster: falco
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@ -2,8 +2,8 @@ apiVersion: v2
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name: kubezero-addons
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description: KubeZero umbrella chart for various optional cluster addons
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type: application
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version: 0.8.3
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appVersion: v1.26
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version: 0.8.4
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appVersion: v1.27
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home: https://kubezero.com
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icon: https://cdn.zero-downtime.net/assets/kubezero/logo-small-64.png
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keywords:
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@ -15,7 +15,6 @@ keywords:
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- sealed-secrets
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- external-dns
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- aws-node-termination-handler
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- falco
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maintainers:
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- name: Stefan Reimer
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email: stefan@zero-downtime.net
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@ -45,9 +44,4 @@ dependencies:
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version: 1.5.0
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repository: https://twin.github.io/helm-charts
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condition: aws-eks-asg-rolling-update-handler.enabled
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- name: falco
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version: 3.8.4
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repository: https://falcosecurity.github.io/charts
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condition: falco-control-plane.enabled
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alias: falco-control-plane
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kubeVersion: ">= 1.26.0"
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@ -1,6 +1,6 @@
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# kubezero-addons
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KubeZero umbrella chart for various optional cluster addons
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@ -18,12 +18,11 @@ Kubernetes: `>= 1.26.0`
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| Repository | Name | Version |
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|------------|------|---------|
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| https://bitnami-labs.github.io/sealed-secrets | sealed-secrets | 2.13.0 |
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| https://falcosecurity.github.io/charts | falco-control-plane(falco) | 3.7.1 |
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| https://bitnami-labs.github.io/sealed-secrets | sealed-secrets | 2.13.2 |
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| https://kubernetes-sigs.github.io/external-dns/ | external-dns | 1.13.1 |
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| https://kubernetes.github.io/autoscaler | cluster-autoscaler | 9.29.3 |
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| https://nvidia.github.io/k8s-device-plugin | nvidia-device-plugin | 0.14.1 |
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| https://twin.github.io/helm-charts | aws-eks-asg-rolling-update-handler | 1.4.0 |
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| https://kubernetes.github.io/autoscaler | cluster-autoscaler | 9.29.5 |
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| https://nvidia.github.io/k8s-device-plugin | nvidia-device-plugin | 0.14.2 |
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| https://twin.github.io/helm-charts | aws-eks-asg-rolling-update-handler | 1.5.0 |
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| oci://public.ecr.aws/aws-ec2/helm | aws-node-termination-handler | 0.22.0 |
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# MetalLB
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@ -42,6 +41,8 @@ Device plugin for [AWS Neuron](https://aws.amazon.com/machine-learning/neuron/)
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| Key | Type | Default | Description |
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|-----|------|---------|-------------|
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| aws-eks-asg-rolling-update-handler.containerSecurityContext.allowPrivilegeEscalation | bool | `false` | |
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| aws-eks-asg-rolling-update-handler.containerSecurityContext.capabilities.drop[0] | string | `"ALL"` | |
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| aws-eks-asg-rolling-update-handler.enabled | bool | `false` | |
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| aws-eks-asg-rolling-update-handler.environmentVars[0].name | string | `"CLUSTER_NAME"` | |
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| aws-eks-asg-rolling-update-handler.environmentVars[0].value | string | `""` | |
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@ -62,11 +63,14 @@ Device plugin for [AWS Neuron](https://aws.amazon.com/machine-learning/neuron/)
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| aws-eks-asg-rolling-update-handler.environmentVars[8].name | string | `"AWS_STS_REGIONAL_ENDPOINTS"` | |
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| aws-eks-asg-rolling-update-handler.environmentVars[8].value | string | `"regional"` | |
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| aws-eks-asg-rolling-update-handler.image.repository | string | `"twinproduction/aws-eks-asg-rolling-update-handler"` | |
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| aws-eks-asg-rolling-update-handler.image.tag | string | `"v1.8.1"` | |
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| aws-eks-asg-rolling-update-handler.image.tag | string | `"v1.8.2"` | |
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| aws-eks-asg-rolling-update-handler.nodeSelector."node-role.kubernetes.io/control-plane" | string | `""` | |
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| aws-eks-asg-rolling-update-handler.resources.limits.memory | string | `"128Mi"` | |
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| aws-eks-asg-rolling-update-handler.resources.requests.cpu | string | `"10m"` | |
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| aws-eks-asg-rolling-update-handler.resources.requests.memory | string | `"32Mi"` | |
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| aws-eks-asg-rolling-update-handler.securityContext.runAsNonRoot | bool | `true` | |
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| aws-eks-asg-rolling-update-handler.securityContext.runAsUser | int | `1001` | |
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| aws-eks-asg-rolling-update-handler.securityContext.seccompProfile.type | string | `"RuntimeDefault"` | |
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| aws-eks-asg-rolling-update-handler.tolerations[0].effect | string | `"NoSchedule"` | |
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| aws-eks-asg-rolling-update-handler.tolerations[0].key | string | `"node-role.kubernetes.io/control-plane"` | |
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| aws-node-termination-handler.checkASGTagBeforeDraining | bool | `false` | |
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@ -129,32 +133,6 @@ Device plugin for [AWS Neuron](https://aws.amazon.com/machine-learning/neuron/)
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| external-dns.tolerations[0].effect | string | `"NoSchedule"` | |
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| external-dns.tolerations[0].key | string | `"node-role.kubernetes.io/control-plane"` | |
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| external-dns.triggerLoopOnEvent | bool | `true` | |
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| falco-control-plane.collectors | object | `{"enabled":false}` | Disable the collectors, no syscall events to enrich with metadata. |
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| falco-control-plane.controller | object | `{"deployment":{"replicas":1},"kind":"deployment"}` | Deploy Falco as a deployment. One instance of Falco is enough. Anyway the number of replicas is configurabale. |
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| falco-control-plane.controller.deployment.replicas | int | `1` | Number of replicas when installing Falco using a deployment. Change it if you really know what you are doing. For more info check the section on Plugins in the README.md file. |
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| falco-control-plane.driver | object | `{"enabled":false}` | Disable the drivers since we want to deploy only the k8saudit plugin. |
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| falco-control-plane.enabled | bool | `false` | |
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| falco-control-plane.falco.load_plugins[0] | string | `"k8saudit"` | |
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| falco-control-plane.falco.load_plugins[1] | string | `"json"` | |
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| falco-control-plane.falco.plugins[0].init_config.maxEventBytes | int | `1048576` | |
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| falco-control-plane.falco.plugins[0].library_path | string | `"libk8saudit.so"` | |
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| falco-control-plane.falco.plugins[0].name | string | `"k8saudit"` | |
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| falco-control-plane.falco.plugins[0].open_params | string | `"http://:9765/k8s-audit"` | |
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| falco-control-plane.falco.plugins[1].init_config | string | `""` | |
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| falco-control-plane.falco.plugins[1].library_path | string | `"libjson.so"` | |
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| falco-control-plane.falco.plugins[1].name | string | `"json"` | |
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| falco-control-plane.falco.rules_file[0] | string | `"/etc/falco/k8s_audit_rules.yaml"` | |
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| falco-control-plane.falco.rules_file[1] | string | `"/etc/falco/rules.d"` | |
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| falco-control-plane.falcoctl.artifact.follow.enabled | bool | `true` | Enable the sidecar container. We do not support it yet for plugins. It is used only for rules feed such as k8saudit-rules rules. |
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| falco-control-plane.falcoctl.artifact.install.enabled | bool | `true` | Enable the init container. We do not recommend installing (or following) plugins for security reasons since they are executable objects. |
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| falco-control-plane.falcoctl.config.artifact.follow.refs | list | `["k8saudit-rules:0.6"]` | List of artifacts to be followed by the falcoctl sidecar container. Only rulesfiles, we do no recommend plugins for security reasonts since they are executable objects. |
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| falco-control-plane.falcoctl.config.artifact.install.refs | list | `["k8saudit-rules:0.6"]` | List of artifacts to be installed by the falcoctl init container. Only rulesfiles, we do no recommend plugins for security reasonts since they are executable objects. |
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| falco-control-plane.falcoctl.config.artifact.install.resolveDeps | bool | `false` | Do not resolve the depenencies for artifacts. By default is true, but for our use case we disable it. |
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| falco-control-plane.fullnameOverride | string | `"falco-control-plane"` | |
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| falco-control-plane.nodeSelector."node-role.kubernetes.io/control-plane" | string | `""` | |
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| falco-control-plane.services[0].name | string | `"k8saudit-webhook"` | |
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| falco-control-plane.services[0].ports[0].port | int | `9765` | |
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| falco-control-plane.services[0].ports[0].protocol | string | `"TCP"` | |
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| forseti.aws.iamRoleArn | string | `""` | "arn:aws:iam::${AWS::AccountId}:role/${AWS::Region}.${ClusterName}.kubezeroForseti" |
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| forseti.aws.region | string | `""` | |
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| forseti.enabled | bool | `false` | |
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@ -162,7 +140,7 @@ Device plugin for [AWS Neuron](https://aws.amazon.com/machine-learning/neuron/)
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| forseti.image.tag | string | `"v0.1.2"` | |
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| fuseDevicePlugin.enabled | bool | `false` | |
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| fuseDevicePlugin.image.name | string | `"public.ecr.aws/zero-downtime/fuse-device-plugin"` | |
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| fuseDevicePlugin.image.tag | string | `"1.2.0"` | |
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| fuseDevicePlugin.image.tag | string | `"v1.2.0"` | |
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| nvidia-device-plugin.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms[0].matchExpressions[0].key | string | `"node.kubernetes.io/instance-type"` | |
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| nvidia-device-plugin.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms[0].matchExpressions[0].operator | string | `"In"` | |
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| nvidia-device-plugin.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms[0].matchExpressions[0].values[0] | string | `"g5.xlarge"` | |
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@ -5,4 +5,4 @@ home: https://github.com/TwiN/aws-eks-asg-rolling-update-handler
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maintainers:
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- name: TwiN
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name: aws-eks-asg-rolling-update-handler
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version: 1.4.0
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version: 1.5.0
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@ -12,3 +12,5 @@ The following table lists the configurable parameters of the aws-eks-asg-rolling
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| resources | CPU/memory resource requests/limits | no | `{}` |
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| podAnnotations | Annotations to add to the aws-eks-asg-rolling-update-handler pod configuration | no | `{}` |
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| podLabels | Labels to add to the aws-eks-asg-rolling-update-handler pod configuration | no | `{}` |
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| securityContext | Pod security context | no | `{}` |
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| containerSecurityContext | Container security context | no | `{}` |
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@ -17,12 +17,16 @@ spec:
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{{ include "aws-eks-asg-rolling-update-handler.labels" . | indent 8 }}
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{{- with .Values.podLabels }}
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- end }}
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annotations:
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{{- with .Values.podAnnotations }}
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{{- toYaml . | nindent 8 }}
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{{- end }}
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spec:
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{{- if .Values.securityContext }}
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securityContext:
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{{ toYaml .Values.securityContext | nindent 8 | trim }}
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{{- end }}
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automountServiceAccountToken: true
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serviceAccountName: {{ template "aws-eks-asg-rolling-update-handler.serviceAccountName" . }}
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restartPolicy: Always
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@ -31,6 +35,10 @@ spec:
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- name: {{ template "aws-eks-asg-rolling-update-handler.name" . }}
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image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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{{- if .Values.containerSecurityContext }}
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securityContext:
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{{ toYaml .Values.containerSecurityContext | nindent 12 | trim }}
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{{- end }}
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env:
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{{- toYaml .Values.environmentVars | nindent 12 }}
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{{- with .Values.resources }}
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@ -37,3 +37,15 @@ serviceAccount:
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create: true
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#name: aws-eks-asg-rolling-update-handler
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annotations: {}
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securityContext: {}
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# runAsNonRoot: true
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# runAsUser: 1001
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# seccompProfile:
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# type: RuntimeDefault
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containerSecurityContext: {}
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# allowPrivilegeEscalation: false
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# capabilities:
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# drop:
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# - ALL
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@ -54,7 +54,7 @@ aws-eks-asg-rolling-update-handler:
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enabled: false
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image:
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repository: twinproduction/aws-eks-asg-rolling-update-handler
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tag: v1.8.1
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tag: v1.8.2
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environmentVars:
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- name: CLUSTER_NAME
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- name: AWS_STS_REGIONAL_ENDPOINTS
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value: "regional"
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securityContext:
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runAsNonRoot: true
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runAsUser: 1001
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seccompProfile:
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type: RuntimeDefault
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containerSecurityContext:
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allowPrivilegeEscalation: false
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capabilities:
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drop:
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- ALL
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resources:
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requests:
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cpu: 10m
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@ -189,7 +201,7 @@ cluster-autoscaler:
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image:
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repository: registry.k8s.io/autoscaling/cluster-autoscaler
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tag: v1.26.4
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tag: v1.27.3
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autoDiscovery:
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clusterName: ""
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@ -259,72 +271,3 @@ external-dns:
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#- istio-gateway
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provider: inmemory
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falco-control-plane:
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enabled: false
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fullnameOverride: falco-control-plane
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# -- Disable the drivers since we want to deploy only the k8saudit plugin.
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driver:
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enabled: false
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# -- Disable the collectors, no syscall events to enrich with metadata.
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collectors:
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enabled: false
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nodeSelector:
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node-role.kubernetes.io/control-plane: ""
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# -- Deploy Falco as a deployment. One instance of Falco is enough. Anyway the number of replicas is configurabale.
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controller:
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kind: deployment
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deployment:
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# -- Number of replicas when installing Falco using a deployment. Change it if you really know what you are doing.
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# For more info check the section on Plugins in the README.md file.
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replicas: 1
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falcoctl:
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artifact:
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install:
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# -- Enable the init container. We do not recommend installing (or following) plugins for security reasons since they are executable objects.
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enabled: true
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follow:
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# -- Enable the sidecar container. We do not support it yet for plugins. It is used only for rules feed such as k8saudit-rules rules.
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enabled: true
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config:
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artifact:
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install:
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# -- Do not resolve the depenencies for artifacts. By default is true, but for our use case we disable it.
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resolveDeps: false
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# -- List of artifacts to be installed by the falcoctl init container.
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# Only rulesfiles, we do no recommend plugins for security reasonts since they are executable objects.
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refs: [k8saudit-rules:0.6]
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follow:
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# -- List of artifacts to be followed by the falcoctl sidecar container.
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# Only rulesfiles, we do no recommend plugins for security reasonts since they are executable objects.
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refs: [k8saudit-rules:0.6]
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services:
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- name: k8saudit-webhook
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ports:
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- port: 9765 # See plugin open_params
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protocol: TCP
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falco:
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rules_file:
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- /etc/falco/k8s_audit_rules.yaml
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- /etc/falco/rules.d
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plugins:
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- name: k8saudit
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library_path: libk8saudit.so
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init_config:
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maxEventBytes: 1048576
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# sslCertificate: /etc/falco/falco.pem
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open_params: "http://:9765/k8s-audit"
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- name: json
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library_path: libjson.so
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init_config: ""
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# Plugins that Falco will load. Note: the same plugins are installed by the falcoctl-artifact-install init container.
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load_plugins: [k8saudit, json]
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@ -0,0 +1,23 @@
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apiVersion: v2
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name: kubezero-falco
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||||
description: Falco Container Security and Audit components
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||||
type: application
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||||
version: 0.1.0
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||||
home: https://kubezero.com
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||||
icon: https://cdn.zero-downtime.net/assets/kubezero/logo-small-64.png
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keywords:
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- kubezero
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- falco
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||||
maintainers:
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- name: Stefan Reimer
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||||
email: stefan@zero-downtime.net
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||||
dependencies:
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- name: kubezero-lib
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version: ">= 0.1.6"
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repository: https://cdn.zero-downtime.net/charts/
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- name: falco
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version: 3.8.4
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repository: https://falcosecurity.github.io/charts
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condition: k8saudit.enabled
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alias: k8saudit
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kubeVersion: ">= 1.26.0"
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@ -0,0 +1,762 @@
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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (C) 2023 The Falco Authors.
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#
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#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
#
|
||||
|
||||
- required_engine_version: 15
|
||||
|
||||
- required_plugin_versions:
|
||||
- name: k8saudit
|
||||
version: 0.6.0
|
||||
alternatives:
|
||||
- name: k8saudit-eks
|
||||
version: 0.2.0
|
||||
- name: json
|
||||
version: 0.7.0
|
||||
|
||||
# Like always_true/always_false, but works with k8s audit events
|
||||
- macro: k8s_audit_always_true
|
||||
condition: (jevt.rawtime exists)
|
||||
|
||||
- macro: k8s_audit_never_true
|
||||
condition: (jevt.rawtime=0)
|
||||
|
||||
# Generally only consider audit events once the response has completed
|
||||
- list: k8s_audit_stages
|
||||
items: ["ResponseComplete"]
|
||||
|
||||
# Generally exclude users starting with "system:"
|
||||
- macro: non_system_user
|
||||
condition: (not ka.user.name startswith "system:")
|
||||
|
||||
# This macro selects the set of Audit Events used by the below rules.
|
||||
- macro: kevt
|
||||
condition: (jevt.value[/stage] in (k8s_audit_stages))
|
||||
|
||||
- macro: kevt_started
|
||||
condition: (jevt.value[/stage]=ResponseStarted)
|
||||
|
||||
# If you wish to restrict activity to a specific set of users, override/append to this list.
|
||||
# users created by kops are included
|
||||
- list: vertical_pod_autoscaler_users
|
||||
items: ["vpa-recommender", "vpa-updater"]
|
||||
|
||||
- list: allowed_k8s_users
|
||||
items: [
|
||||
"minikube", "minikube-user", "kubelet", "kops", "admin", "kube", "kube-proxy", "kube-apiserver-healthcheck",
|
||||
"kubernetes-admin",
|
||||
vertical_pod_autoscaler_users,
|
||||
cluster-autoscaler,
|
||||
"system:addon-manager",
|
||||
"cloud-controller-manager",
|
||||
"system:kube-controller-manager"
|
||||
]
|
||||
|
||||
- list: eks_allowed_k8s_users
|
||||
items: [
|
||||
"eks:node-manager",
|
||||
"eks:certificate-controller",
|
||||
"eks:fargate-scheduler",
|
||||
"eks:k8s-metrics",
|
||||
"eks:authenticator",
|
||||
"eks:cluster-event-watcher",
|
||||
"eks:nodewatcher",
|
||||
"eks:pod-identity-mutating-webhook",
|
||||
"eks:cloud-controller-manager",
|
||||
"eks:vpc-resource-controller",
|
||||
"eks:addon-manager",
|
||||
]
|
||||
-
|
||||
- rule: Disallowed K8s User
|
||||
desc: Detect any k8s operation by users outside of an allowed set of users.
|
||||
condition: kevt and non_system_user and not ka.user.name in (allowed_k8s_users) and not ka.user.name in (eks_allowed_k8s_users)
|
||||
output: K8s Operation performed by user not in allowed list of users (user=%ka.user.name target=%ka.target.name/%ka.target.resource verb=%ka.verb uri=%ka.uri resp=%ka.response.code)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# In a local/user rules file, you could override this macro to
|
||||
# explicitly enumerate the container images that you want to run in
|
||||
# your environment. In this main falco rules file, there isn't any way
|
||||
# to know all the containers that can run, so any container is
|
||||
# allowed, by using the always_true macro. In the overridden macro, the condition
|
||||
# would look something like (ka.req.pod.containers.image.repository in (my-repo/my-image))
|
||||
- macro: allowed_k8s_containers
|
||||
condition: (k8s_audit_always_true)
|
||||
|
||||
- macro: response_successful
|
||||
condition: (ka.response.code startswith 2)
|
||||
|
||||
- macro: kget
|
||||
condition: ka.verb=get
|
||||
|
||||
- macro: kcreate
|
||||
condition: ka.verb=create
|
||||
|
||||
- macro: kmodify
|
||||
condition: (ka.verb in (create,update,patch))
|
||||
|
||||
- macro: kdelete
|
||||
condition: ka.verb=delete
|
||||
|
||||
- macro: pod
|
||||
condition: ka.target.resource=pods and not ka.target.subresource exists
|
||||
|
||||
- macro: pod_subresource
|
||||
condition: ka.target.resource=pods and ka.target.subresource exists
|
||||
|
||||
- macro: deployment
|
||||
condition: ka.target.resource=deployments
|
||||
|
||||
- macro: service
|
||||
condition: ka.target.resource=services
|
||||
|
||||
- macro: configmap
|
||||
condition: ka.target.resource=configmaps
|
||||
|
||||
- macro: namespace
|
||||
condition: ka.target.resource=namespaces
|
||||
|
||||
- macro: serviceaccount
|
||||
condition: ka.target.resource=serviceaccounts
|
||||
|
||||
- macro: clusterrole
|
||||
condition: ka.target.resource=clusterroles
|
||||
|
||||
- macro: clusterrolebinding
|
||||
condition: ka.target.resource=clusterrolebindings
|
||||
|
||||
- macro: role
|
||||
condition: ka.target.resource=roles
|
||||
|
||||
- macro: secret
|
||||
condition: ka.target.resource=secrets
|
||||
|
||||
- macro: health_endpoint
|
||||
condition: ka.uri=/healthz or ka.uri startswith /healthz?
|
||||
|
||||
- macro: live_endpoint
|
||||
condition: ka.uri=/livez or ka.uri startswith /livez?
|
||||
|
||||
- macro: ready_endpoint
|
||||
condition: ka.uri=/readyz or ka.uri startswith /readyz?
|
||||
|
||||
- rule: Create Disallowed Pod
|
||||
desc: >
|
||||
Detect an attempt to start a pod with a container image outside of a list of allowed images.
|
||||
condition: kevt and pod and kcreate and not allowed_k8s_containers
|
||||
output: Pod started with container not in allowed list (user=%ka.user.name pod=%ka.resp.name ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: Create Privileged Pod
|
||||
desc: >
|
||||
Detect an attempt to start a pod with a privileged container
|
||||
condition: kevt and pod and kcreate and ka.req.pod.containers.privileged intersects (true) and not ka.req.pod.containers.image.repository in (falco_privileged_images)
|
||||
output: Pod started with privileged container (user=%ka.user.name pod=%ka.resp.name resource=%ka.target.resource ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: sensitive_vol_mount
|
||||
condition: >
|
||||
(ka.req.pod.volumes.hostpath intersects (/proc, /var/run/docker.sock, /, /etc, /root, /var/run/crio/crio.sock, /run/containerd/containerd.sock, /home/admin, /var/lib/kubelet, /var/lib/kubelet/pki, /etc/kubernetes, /etc/kubernetes/manifests))
|
||||
|
||||
- rule: Create Sensitive Mount Pod
|
||||
desc: >
|
||||
Detect an attempt to start a pod with a volume from a sensitive host directory (i.e. /proc).
|
||||
Exceptions are made for known trusted images.
|
||||
condition: kevt and pod and kcreate and sensitive_vol_mount and not ka.req.pod.containers.image.repository in (falco_sensitive_mount_images)
|
||||
output: Pod started with sensitive mount (user=%ka.user.name pod=%ka.resp.name ns=%ka.target.namespace resource=%ka.target.resource images=%ka.req.pod.containers.image volumes=%jevt.value[/requestObject/spec/volumes])
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# These container images are allowed to run with hostnetwork=true
|
||||
# TODO: Remove k8s.gcr.io reference after 01/Dec/2023
|
||||
- list: falco_hostnetwork_images
|
||||
items: [
|
||||
gcr.io/google-containers/prometheus-to-sd,
|
||||
gcr.io/projectcalico-org/typha,
|
||||
gcr.io/projectcalico-org/node,
|
||||
gke.gcr.io/gke-metadata-server,
|
||||
gke.gcr.io/kube-proxy,
|
||||
gke.gcr.io/netd-amd64,
|
||||
k8s.gcr.io/ip-masq-agent-amd64,
|
||||
k8s.gcr.io/prometheus-to-sd,
|
||||
registry.k8s.io/ip-masq-agent-amd64,
|
||||
registry.k8s.io/prometheus-to-sd
|
||||
]
|
||||
|
||||
# Corresponds to K8s CIS Benchmark 1.7.4
|
||||
- rule: Create HostNetwork Pod
|
||||
desc: Detect an attempt to start a pod using the host network.
|
||||
condition: kevt and pod and kcreate and ka.req.pod.host_network intersects (true) and not ka.req.pod.containers.image.repository in (falco_hostnetwork_images)
|
||||
output: Pod started using host network (user=%ka.user.name pod=%ka.resp.name resource=%ka.target.resource ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- list: falco_hostpid_images
|
||||
items: []
|
||||
|
||||
- rule: Create HostPid Pod
|
||||
desc: Detect an attempt to start a pod using the host pid namespace.
|
||||
condition: kevt and pod and kcreate and ka.req.pod.host_pid intersects (true) and not ka.req.pod.containers.image.repository in (falco_hostpid_images)
|
||||
output: Pod started using host pid namespace (user=%ka.user.name pod=%ka.resp.name resource=%ka.target.resource ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- list: falco_hostipc_images
|
||||
items: []
|
||||
|
||||
- rule: Create HostIPC Pod
|
||||
desc: Detect an attempt to start a pod using the host ipc namespace.
|
||||
condition: kevt and pod and kcreate and ka.req.pod.host_ipc intersects (true) and not ka.req.pod.containers.image.repository in (falco_hostipc_images)
|
||||
output: Pod started using host ipc namespace (user=%ka.user.name pod=%ka.resp.name resource=%ka.target.resource ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: user_known_node_port_service
|
||||
condition: (k8s_audit_never_true)
|
||||
|
||||
- rule: Create NodePort Service
|
||||
desc: >
|
||||
Detect an attempt to start a service with a NodePort service type
|
||||
condition: kevt and service and kcreate and ka.req.service.type=NodePort and not user_known_node_port_service
|
||||
output: NodePort Service Created (user=%ka.user.name service=%ka.target.name resource=%ka.target.resource ns=%ka.target.namespace ports=%ka.req.service.ports)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: contains_private_credentials
|
||||
condition: >
|
||||
(ka.req.configmap.obj contains "aws_access_key_id" or
|
||||
ka.req.configmap.obj contains "aws-access-key-id" or
|
||||
ka.req.configmap.obj contains "aws_s3_access_key_id" or
|
||||
ka.req.configmap.obj contains "aws-s3-access-key-id" or
|
||||
ka.req.configmap.obj contains "password" or
|
||||
ka.req.configmap.obj contains "passphrase")
|
||||
|
||||
- rule: Create/Modify Configmap With Private Credentials
|
||||
desc: >
|
||||
Detect creating/modifying a configmap containing a private credential (aws key, password, etc.)
|
||||
condition: kevt and configmap and kmodify and contains_private_credentials
|
||||
output: K8s configmap with private credential (user=%ka.user.name verb=%ka.verb resource=%ka.target.resource configmap=%ka.req.configmap.name config=%ka.req.configmap.obj)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# Corresponds to K8s CIS Benchmark, 1.1.1.
|
||||
- rule: Anonymous Request Allowed
|
||||
desc: >
|
||||
Detect any request made by the anonymous user that was allowed
|
||||
condition: kevt and ka.user.name=system:anonymous and ka.auth.decision="allow" and not health_endpoint and not live_endpoint and not ready_endpoint
|
||||
output: Request by anonymous user allowed (user=%ka.user.name verb=%ka.verb uri=%ka.uri reason=%ka.auth.reason))
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# Roughly corresponds to K8s CIS Benchmark, 1.1.12. In this case,
|
||||
# notifies an attempt to exec/attach to a privileged container.
|
||||
|
||||
# Ideally, we'd add a more stringent rule that detects attaches/execs
|
||||
# to a privileged pod, but that requires the engine for k8s audit
|
||||
# events to be stateful, so it could know if a container named in an
|
||||
# attach request was created privileged or not. For now, we have a
|
||||
# less severe rule that detects attaches/execs to any pod.
|
||||
#
|
||||
# For the same reason, you can't use things like image names/prefixes,
|
||||
# as the event that creates the pod (which has the images) is a
|
||||
# separate event than the actual exec/attach to the pod.
|
||||
|
||||
- macro: user_known_exec_pod_activities
|
||||
condition: (k8s_audit_never_true)
|
||||
|
||||
- rule: Attach/Exec Pod
|
||||
desc: >
|
||||
Detect any attempt to attach/exec to a pod
|
||||
condition: kevt_started and pod_subresource and kcreate and ka.target.subresource in (exec,attach) and not user_known_exec_pod_activities
|
||||
output: Attach/Exec to pod (user=%ka.user.name pod=%ka.target.name resource=%ka.target.resource ns=%ka.target.namespace action=%ka.target.subresource command=%ka.uri.param[command])
|
||||
priority: NOTICE
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: user_known_pod_debug_activities
|
||||
condition: (k8s_audit_never_true)
|
||||
|
||||
# Only works when feature gate EphemeralContainers is enabled
|
||||
- rule: EphemeralContainers Created
|
||||
desc: >
|
||||
Detect any ephemeral container created
|
||||
condition: kevt and pod_subresource and kmodify and ka.target.subresource in (ephemeralcontainers) and not user_known_pod_debug_activities
|
||||
output: Ephemeral container is created in pod (user=%ka.user.name pod=%ka.target.name resource=%ka.target.resource ns=%ka.target.namespace ephemeral_container_name=%jevt.value[/requestObject/ephemeralContainers/0/name] ephemeral_container_image=%jevt.value[/requestObject/ephemeralContainers/0/image])
|
||||
priority: NOTICE
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# In a local/user rules fie, you can append to this list to add additional allowed namespaces
|
||||
- list: allowed_namespaces
|
||||
items: [kube-system, kube-public, default]
|
||||
|
||||
- rule: Create Disallowed Namespace
|
||||
desc: Detect any attempt to create a namespace outside of a set of known namespaces
|
||||
condition: kevt and namespace and kcreate and not ka.target.name in (allowed_namespaces)
|
||||
output: Disallowed namespace created (user=%ka.user.name ns=%ka.target.name resource=%ka.target.resource)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# Only defined for backwards compatibility. Use the more specific
|
||||
# user_allowed_kube_namespace_image_list instead.
|
||||
- list: user_trusted_image_list
|
||||
items: []
|
||||
|
||||
- list: user_allowed_kube_namespace_image_list
|
||||
items: [user_trusted_image_list]
|
||||
|
||||
# Only defined for backwards compatibility. Use the more specific
|
||||
# allowed_kube_namespace_image_list instead.
|
||||
- list: k8s_image_list
|
||||
items: []
|
||||
|
||||
# TODO: Remove k8s.gcr.io reference after 01/Dec/2023
|
||||
- list: allowed_kube_namespace_image_list
|
||||
items: [
|
||||
gcr.io/google-containers/prometheus-to-sd,
|
||||
gcr.io/projectcalico-org/node,
|
||||
gke.gcr.io/addon-resizer,
|
||||
gke.gcr.io/heapster,
|
||||
gke.gcr.io/gke-metadata-server,
|
||||
k8s.gcr.io/ip-masq-agent-amd64,
|
||||
k8s.gcr.io/kube-apiserver,
|
||||
registry.k8s.io/ip-masq-agent-amd64,
|
||||
registry.k8s.io/kube-apiserver,
|
||||
gke.gcr.io/kube-proxy,
|
||||
gke.gcr.io/netd-amd64,
|
||||
gke.gcr.io/watcher-daemonset,
|
||||
k8s.gcr.io/addon-resizer,
|
||||
k8s.gcr.io/prometheus-to-sd,
|
||||
k8s.gcr.io/k8s-dns-dnsmasq-nanny-amd64,
|
||||
k8s.gcr.io/k8s-dns-kube-dns-amd64,
|
||||
k8s.gcr.io/k8s-dns-sidecar-amd64,
|
||||
k8s.gcr.io/metrics-server-amd64,
|
||||
registry.k8s.io/addon-resizer,
|
||||
registry.k8s.io/prometheus-to-sd,
|
||||
registry.k8s.io/k8s-dns-dnsmasq-nanny-amd64,
|
||||
registry.k8s.io/k8s-dns-kube-dns-amd64,
|
||||
registry.k8s.io/k8s-dns-sidecar-amd64,
|
||||
registry.k8s.io/metrics-server-amd64,
|
||||
kope/kube-apiserver-healthcheck,
|
||||
k8s_image_list
|
||||
]
|
||||
|
||||
- macro: allowed_kube_namespace_pods
|
||||
condition: (ka.req.pod.containers.image.repository in (user_allowed_kube_namespace_image_list) or
|
||||
ka.req.pod.containers.image.repository in (allowed_kube_namespace_image_list))
|
||||
|
||||
# Detect any new pod created in the kube-system namespace
|
||||
- rule: Pod Created in Kube Namespace
|
||||
desc: Detect any attempt to create a pod in the kube-system or kube-public namespaces
|
||||
condition: kevt and pod and kcreate and ka.target.namespace in (kube-system, kube-public) and not allowed_kube_namespace_pods
|
||||
output: Pod created in kube namespace (user=%ka.user.name pod=%ka.resp.name resource=%ka.target.resource ns=%ka.target.namespace images=%ka.req.pod.containers.image)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- list: user_known_sa_list
|
||||
items: []
|
||||
|
||||
- list: known_sa_list
|
||||
items: [
|
||||
coredns,
|
||||
coredns-autoscaler,
|
||||
cronjob-controller,
|
||||
daemon-set-controller,
|
||||
deployment-controller,
|
||||
disruption-controller,
|
||||
endpoint-controller,
|
||||
endpointslice-controller,
|
||||
endpointslicemirroring-controller,
|
||||
generic-garbage-collector,
|
||||
horizontal-pod-autoscaler,
|
||||
job-controller,
|
||||
namespace-controller,
|
||||
node-controller,
|
||||
persistent-volume-binder,
|
||||
pod-garbage-collector,
|
||||
pv-protection-controller,
|
||||
pvc-protection-controller,
|
||||
replicaset-controller,
|
||||
resourcequota-controller,
|
||||
root-ca-cert-publisher,
|
||||
service-account-controller,
|
||||
statefulset-controller
|
||||
]
|
||||
|
||||
- macro: trusted_sa
|
||||
condition: (ka.target.name in (known_sa_list, user_known_sa_list))
|
||||
|
||||
# Detect creating a service account in the kube-system/kube-public namespace
|
||||
- rule: Service Account Created in Kube Namespace
|
||||
desc: Detect any attempt to create a serviceaccount in the kube-system or kube-public namespaces
|
||||
condition: kevt and serviceaccount and kcreate and ka.target.namespace in (kube-system, kube-public) and response_successful and not trusted_sa
|
||||
output: Service account created in kube namespace (user=%ka.user.name serviceaccount=%ka.target.name resource=%ka.target.resource ns=%ka.target.namespace)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# Detect any modify/delete to any ClusterRole starting with
|
||||
# "system:". "system:coredns" is excluded as changes are expected in
|
||||
# normal operation.
|
||||
- rule: System ClusterRole Modified/Deleted
|
||||
desc: Detect any attempt to modify/delete a ClusterRole/Role starting with system
|
||||
condition: kevt and (role or clusterrole) and (kmodify or kdelete) and (ka.target.name startswith "system:") and
|
||||
not ka.target.name in (system:coredns, system:managed-certificate-controller)
|
||||
output: System ClusterRole/Role modified or deleted (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource ns=%ka.target.namespace action=%ka.verb)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# Detect any attempt to create a ClusterRoleBinding to the cluster-admin user
|
||||
# (expand this to any built-in cluster role that does "sensitive" things)
|
||||
- rule: Attach to cluster-admin Role
|
||||
desc: Detect any attempt to create a ClusterRoleBinding to the cluster-admin user
|
||||
condition: kevt and clusterrolebinding and kcreate and ka.req.binding.role=cluster-admin
|
||||
output: Cluster Role Binding to cluster-admin role (user=%ka.user.name subject=%ka.req.binding.subjects)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: ClusterRole With Wildcard Created
|
||||
desc: Detect any attempt to create a Role/ClusterRole with wildcard resources or verbs
|
||||
condition: kevt and (role or clusterrole) and kcreate and (ka.req.role.rules.resources intersects ("*") or ka.req.role.rules.verbs intersects ("*"))
|
||||
output: Created Role/ClusterRole with wildcard (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource rules=%ka.req.role.rules)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: writable_verbs
|
||||
condition: >
|
||||
(ka.req.role.rules.verbs intersects (create, update, patch, delete, deletecollection))
|
||||
|
||||
- rule: ClusterRole With Write Privileges Created
|
||||
desc: Detect any attempt to create a Role/ClusterRole that can perform write-related actions
|
||||
condition: kevt and (role or clusterrole) and kcreate and writable_verbs
|
||||
output: Created Role/ClusterRole with write privileges (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource rules=%ka.req.role.rules)
|
||||
priority: NOTICE
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: ClusterRole With Pod Exec Created
|
||||
desc: Detect any attempt to create a Role/ClusterRole that can exec to pods
|
||||
condition: kevt and (role or clusterrole) and kcreate and ka.req.role.rules.resources intersects ("pods/exec")
|
||||
output: Created Role/ClusterRole with pod exec privileges (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource rules=%ka.req.role.rules)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# The rules below this point are less discriminatory and generally
|
||||
# represent a stream of activity for a cluster. If you wish to disable
|
||||
# these events, modify the following macro.
|
||||
- macro: consider_activity_events
|
||||
condition: (k8s_audit_always_true)
|
||||
|
||||
- macro: kactivity
|
||||
condition: (kevt and consider_activity_events)
|
||||
|
||||
- rule: K8s Deployment Created
|
||||
desc: Detect any attempt to create a deployment
|
||||
condition: (kactivity and kcreate and deployment and response_successful)
|
||||
output: K8s Deployment Created (user=%ka.user.name deployment=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Deployment Deleted
|
||||
desc: Detect any attempt to delete a deployment
|
||||
condition: (kactivity and kdelete and deployment and response_successful)
|
||||
output: K8s Deployment Deleted (user=%ka.user.name deployment=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Service Created
|
||||
desc: Detect any attempt to create a service
|
||||
condition: (kactivity and kcreate and service and response_successful)
|
||||
output: K8s Service Created (user=%ka.user.name service=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Service Deleted
|
||||
desc: Detect any attempt to delete a service
|
||||
condition: (kactivity and kdelete and service and response_successful)
|
||||
output: K8s Service Deleted (user=%ka.user.name service=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s ConfigMap Created
|
||||
desc: Detect any attempt to create a configmap
|
||||
condition: (kactivity and kcreate and configmap and response_successful)
|
||||
output: K8s ConfigMap Created (user=%ka.user.name configmap=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s ConfigMap Deleted
|
||||
desc: Detect any attempt to delete a configmap
|
||||
condition: (kactivity and kdelete and configmap and response_successful)
|
||||
output: K8s ConfigMap Deleted (user=%ka.user.name configmap=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Namespace Created
|
||||
desc: Detect any attempt to create a namespace
|
||||
condition: (kactivity and kcreate and namespace and response_successful)
|
||||
output: K8s Namespace Created (user=%ka.user.name namespace=%ka.target.name resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Namespace Deleted
|
||||
desc: Detect any attempt to delete a namespace
|
||||
condition: (kactivity and non_system_user and kdelete and namespace and response_successful)
|
||||
output: K8s Namespace Deleted (user=%ka.user.name namespace=%ka.target.name resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Serviceaccount Created
|
||||
desc: Detect any attempt to create a service account
|
||||
condition: (kactivity and kcreate and serviceaccount and response_successful)
|
||||
output: K8s Serviceaccount Created (user=%ka.user.name serviceaccount=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Serviceaccount Deleted
|
||||
desc: Detect any attempt to delete a service account
|
||||
condition: (kactivity and kdelete and serviceaccount and response_successful)
|
||||
output: K8s Serviceaccount Deleted (user=%ka.user.name serviceaccount=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Role/Clusterrole Created
|
||||
desc: Detect any attempt to create a cluster role/role
|
||||
condition: (kactivity and kcreate and (clusterrole or role) and response_successful)
|
||||
output: K8s Cluster Role Created (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource rules=%ka.req.role.rules resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Role/Clusterrole Deleted
|
||||
desc: Detect any attempt to delete a cluster role/role
|
||||
condition: (kactivity and kdelete and (clusterrole or role) and response_successful)
|
||||
output: K8s Cluster Role Deleted (user=%ka.user.name role=%ka.target.name resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Role/Clusterrolebinding Created
|
||||
desc: Detect any attempt to create a clusterrolebinding
|
||||
condition: (kactivity and kcreate and clusterrolebinding and response_successful)
|
||||
output: K8s Cluster Role Binding Created (user=%ka.user.name binding=%ka.target.name resource=%ka.target.resource subjects=%ka.req.binding.subjects role=%ka.req.binding.role resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Role/Clusterrolebinding Deleted
|
||||
desc: Detect any attempt to delete a clusterrolebinding
|
||||
condition: (kactivity and kdelete and clusterrolebinding and response_successful)
|
||||
output: K8s Cluster Role Binding Deleted (user=%ka.user.name binding=%ka.target.name resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Secret Created
|
||||
desc: Detect any attempt to create a secret. Service account tokens are excluded.
|
||||
condition: (kactivity and kcreate and secret and ka.target.namespace!=kube-system and non_system_user and response_successful)
|
||||
output: K8s Secret Created (user=%ka.user.name secret=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Secret Deleted
|
||||
desc: Detect any attempt to delete a secret. Service account tokens are excluded.
|
||||
condition: (kactivity and kdelete and secret and ka.target.namespace!=kube-system and non_system_user and response_successful)
|
||||
output: K8s Secret Deleted (user=%ka.user.name secret=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: INFO
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Secret Get Successfully
|
||||
desc: >
|
||||
Detect any attempt to get a secret. Service account tokens are excluded.
|
||||
condition: >
|
||||
secret and kget
|
||||
and kactivity
|
||||
and response_successful
|
||||
output: K8s Secret Get Successfully (user=%ka.user.name secret=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: ERROR
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: K8s Secret Get Unsuccessfully Tried
|
||||
desc: >
|
||||
Detect an unsuccessful attempt to get the secret. Service account tokens are excluded.
|
||||
condition: >
|
||||
secret and kget
|
||||
and kactivity
|
||||
and not response_successful
|
||||
output: K8s Secret Get Unsuccessfully Tried (user=%ka.user.name secret=%ka.target.name ns=%ka.target.namespace resource=%ka.target.resource resp=%ka.response.code decision=%ka.auth.decision reason=%ka.auth.reason)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
# This rule generally matches all events, and as a result is disabled
|
||||
# by default. If you wish to enable these events, modify the
|
||||
# following macro.
|
||||
# condition: (jevt.rawtime exists)
|
||||
- macro: consider_all_events
|
||||
condition: (k8s_audit_never_true)
|
||||
|
||||
- macro: kall
|
||||
condition: (kevt and consider_all_events)
|
||||
|
||||
- rule: All K8s Audit Events
|
||||
desc: Match all K8s Audit Events
|
||||
condition: kall
|
||||
output: K8s Audit Event received (user=%ka.user.name verb=%ka.verb uri=%ka.uri obj=%jevt.obj)
|
||||
priority: DEBUG
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
|
||||
# This macro disables following rule, change to k8s_audit_never_true to enable it
|
||||
- macro: allowed_full_admin_users
|
||||
condition: (k8s_audit_always_true)
|
||||
|
||||
# This list includes some of the default user names for an administrator in several K8s installations
|
||||
- list: full_admin_k8s_users
|
||||
items: ["admin", "kubernetes-admin", "kubernetes-admin@kubernetes", "kubernetes-admin@cluster.local", "minikube-user"]
|
||||
|
||||
# This rules detect an operation triggered by an user name that is
|
||||
# included in the list of those that are default administrators upon
|
||||
# cluster creation. This may signify a permission setting too broader.
|
||||
# As we can't check for role of the user on a general ka.* event, this
|
||||
# may or may not be an administrator. Customize the full_admin_k8s_users
|
||||
# list to your needs, and activate at your discretion.
|
||||
|
||||
# # How to test:
|
||||
# # Execute any kubectl command connected using default cluster user, as:
|
||||
# kubectl create namespace rule-test
|
||||
|
||||
- rule: Full K8s Administrative Access
|
||||
desc: Detect any k8s operation by a user name that may be an administrator with full access.
|
||||
condition: >
|
||||
kevt
|
||||
and non_system_user
|
||||
and ka.user.name in (full_admin_k8s_users)
|
||||
and not allowed_full_admin_users
|
||||
output: K8s Operation performed by full admin user (user=%ka.user.name target=%ka.target.name/%ka.target.resource verb=%ka.verb uri=%ka.uri resp=%ka.response.code)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- macro: ingress
|
||||
condition: ka.target.resource=ingresses
|
||||
|
||||
- macro: ingress_tls
|
||||
condition: (jevt.value[/requestObject/spec/tls] exists)
|
||||
|
||||
# # How to test:
|
||||
# # Create an ingress.yaml file with content:
|
||||
# apiVersion: networking.k8s.io/v1beta1
|
||||
# kind: Ingress
|
||||
# metadata:
|
||||
# name: test-ingress
|
||||
# annotations:
|
||||
# nginx.ingress.kubernetes.io/rewrite-target: /
|
||||
# spec:
|
||||
# rules:
|
||||
# - http:
|
||||
# paths:
|
||||
# - path: /testpath
|
||||
# backend:
|
||||
# serviceName: test
|
||||
# servicePort: 80
|
||||
# # Execute: kubectl apply -f ingress.yaml
|
||||
|
||||
- rule: Ingress Object without TLS Certificate Created
|
||||
desc: Detect any attempt to create an ingress without TLS certification.
|
||||
condition: >
|
||||
(kactivity and kcreate and ingress and response_successful and not ingress_tls)
|
||||
output: >
|
||||
K8s Ingress Without TLS Cert Created (user=%ka.user.name ingress=%ka.target.name
|
||||
namespace=%ka.target.namespace resource=%ka.target.resource)
|
||||
source: k8s_audit
|
||||
priority: WARNING
|
||||
tags: [k8s, network]
|
||||
|
||||
- macro: node
|
||||
condition: ka.target.resource=nodes
|
||||
|
||||
- macro: allow_all_k8s_nodes
|
||||
condition: (k8s_audit_always_true)
|
||||
|
||||
- list: allowed_k8s_nodes
|
||||
items: []
|
||||
|
||||
# # How to test:
|
||||
# # Create a Falco monitored cluster with Kops
|
||||
# # Increase the number of minimum nodes with:
|
||||
# kops edit ig nodes
|
||||
# kops apply --yes
|
||||
|
||||
- rule: Untrusted Node Successfully Joined the Cluster
|
||||
desc: >
|
||||
Detect a node successfully joined the cluster outside of the list of allowed nodes.
|
||||
condition: >
|
||||
kevt and node
|
||||
and kcreate
|
||||
and response_successful
|
||||
and not allow_all_k8s_nodes
|
||||
and not ka.target.name in (allowed_k8s_nodes)
|
||||
output: Node not in allowed list successfully joined the cluster (user=%ka.user.name node=%ka.target.name resource=%ka.target.resource)
|
||||
priority: ERROR
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
||||
- rule: Untrusted Node Unsuccessfully Tried to Join the Cluster
|
||||
desc: >
|
||||
Detect an unsuccessful attempt to join the cluster for a node not in the list of allowed nodes.
|
||||
condition: >
|
||||
kevt and node
|
||||
and kcreate
|
||||
and not response_successful
|
||||
and not allow_all_k8s_nodes
|
||||
and not ka.target.name in (allowed_k8s_nodes)
|
||||
output: Node not in allowed list tried unsuccessfully to join the cluster (user=%ka.user.name node=%ka.target.name reason=%ka.response.reason resource=%ka.target.resource)
|
||||
priority: WARNING
|
||||
source: k8s_audit
|
||||
tags: [k8s]
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
{{- if .Values.k8saudit.enabled }}
|
||||
apiVersion: v1
|
||||
kind: ConfigMap
|
||||
metadata:
|
||||
name: falco-k8saudit-rules
|
||||
labels:
|
||||
{{- include "falco.labels" . | nindent 4 }}
|
||||
data:
|
||||
{{- (.Files.Glob "files/rules/**.yaml").AsConfig | nindent 2 }}
|
||||
{{- end }}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
#!/bin/bash
|
||||
set -ex
|
||||
|
||||
. ../../scripts/lib-update.sh
|
||||
|
||||
#login_ecr_public
|
||||
update_helm
|
||||
|
||||
# update falco rules
|
||||
wget -qO files/rules/k8s_audit_rules.yaml https://raw.githubusercontent.com/falcosecurity/plugins/master/plugins/k8saudit/rules/k8s_audit_rules.yaml
|
||||
|
||||
update_docs
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
k8saudit:
|
||||
enabled: false
|
||||
|
||||
fullnameOverride: falco-k8saudit
|
||||
|
||||
# -- Disable the drivers since we want to deploy only the k8saudit plugin.
|
||||
driver:
|
||||
enabled: false
|
||||
|
||||
# -- Disable the collectors, no syscall events to enrich with metadata.
|
||||
collectors:
|
||||
enabled: false
|
||||
|
||||
# falcoctl disabled so we can reduce resources quite a bit
|
||||
resources:
|
||||
requests:
|
||||
cpu: 100m
|
||||
memory: 256Mi
|
||||
limits:
|
||||
cpu: 1000m
|
||||
memory: 512Mi
|
||||
|
||||
nodeSelector:
|
||||
node-role.kubernetes.io/control-plane: ""
|
||||
|
||||
# -- Deploy Falco as a deployment. One instance of Falco is enough. Anyway the number of replicas is configurabale.
|
||||
controller:
|
||||
kind: deployment
|
||||
deployment:
|
||||
# -- Number of replicas when installing Falco using a deployment. Change it if you really know what you are doing.
|
||||
# For more info check the section on Plugins in the README.md file.
|
||||
replicas: 1
|
||||
|
||||
# This provides k8s-audit rules via custom CM
|
||||
mounts:
|
||||
volumeMounts:
|
||||
- mountPath: /etc/falco/rules.d
|
||||
name: rules-volume
|
||||
volumes:
|
||||
- name: rules-volume
|
||||
configMap:
|
||||
name: falco-k8saudit-rules
|
||||
|
||||
falcoctl:
|
||||
artifact:
|
||||
install:
|
||||
enabled: false
|
||||
follow:
|
||||
enabled: false
|
||||
|
||||
services:
|
||||
- name: webhook
|
||||
ports:
|
||||
- port: 9765 # See plugin open_params
|
||||
protocol: TCP
|
||||
|
||||
falco:
|
||||
rules_file:
|
||||
- /etc/falco/rules.d
|
||||
plugins:
|
||||
- name: k8saudit
|
||||
library_path: libk8saudit.so
|
||||
init_config:
|
||||
maxEventSize: 1048576
|
||||
open_params: "http://:9765/k8s-audit"
|
||||
- name: json
|
||||
library_path: libjson.so
|
||||
init_config: ""
|
||||
# Plugins that Falco will load. Note: the same plugins are installed by the falcoctl-artifact-install init container.
|
||||
load_plugins: [k8saudit, json]
|
||||
|
||||
json_output: true
|
||||
buffered_outputs: true
|
||||
log_syslog: false
|
||||
syslog_output:
|
||||
enabled: false
|
||||
|
|
@ -2,7 +2,7 @@ apiVersion: v2
|
|||
name: kubezero
|
||||
description: KubeZero - Root App of Apps chart
|
||||
type: application
|
||||
version: 1.27.7
|
||||
version: 1.27.8
|
||||
home: https://kubezero.com
|
||||
icon: https://cdn.zero-downtime.net/assets/kubezero/logo-small-64.png
|
||||
keywords:
|
||||
|
|
|
|||
|
|
@ -0,0 +1,15 @@
|
|||
{{- define "falco-values" }}
|
||||
|
||||
{{- with .Values.falco.k8saudit }}
|
||||
k8saudit:
|
||||
{{- toYaml . | nindent 2 }}
|
||||
{{- end }}
|
||||
|
||||
{{- end }}
|
||||
|
||||
|
||||
{{- define "falco-argo" }}
|
||||
|
||||
{{- end }}
|
||||
|
||||
{{ include "kubezero-app.app" . }}
|
||||
|
|
@ -10,7 +10,7 @@ global:
|
|||
|
||||
addons:
|
||||
enabled: true
|
||||
targetRevision: 0.8.2
|
||||
targetRevision: 0.8.4
|
||||
external-dns:
|
||||
enabled: false
|
||||
forseti:
|
||||
|
|
@ -25,8 +25,6 @@ addons:
|
|||
enabled: false
|
||||
aws-eks-asg-rolling-update-handler:
|
||||
enabled: false
|
||||
falco-control-plane:
|
||||
enabled: false
|
||||
|
||||
network:
|
||||
enabled: true
|
||||
|
|
@ -77,6 +75,12 @@ istio-private-ingress:
|
|||
gateway:
|
||||
service: {}
|
||||
|
||||
falco:
|
||||
enabled: false
|
||||
k8saudit:
|
||||
enabled: false
|
||||
targetRevision: 0.1.0
|
||||
|
||||
telemetry:
|
||||
enabled: false
|
||||
namespace: telemetry
|
||||
|
|
|
|||
Loading…
Reference in New Issue