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7b31f456c9
* Implement validationFailureActionByPolicy * Update README.md * Add artifacthub.io/changes entry * Add Test Case Signed-off-by: dschunack <dschunack@web.de>
64 lines
2.5 KiB
YAML
64 lines
2.5 KiB
YAML
{{- $name := "disallow-proc-mount" }}
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{{- if eq (include "kyverno-policies.podSecurityBaseline" (merge (dict "name" $name) .)) "true" }}
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/title: Disallow procMount
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policies.kyverno.io/category: Pod Security Standards (Baseline)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity }}
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{{- end }}
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policies.kyverno.io/subject: Pod
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kyverno.io/kyverno-version: 1.6.0
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kyverno.io/kubernetes-version: "1.22-1.23"
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policies.kyverno.io/description: >-
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The default /proc masks are set up to reduce attack surface and should be required. This policy
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ensures nothing but the default procMount can be specified. Note that in order for users
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to deviate from the `Default` procMount requires setting a feature gate at the API
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server.
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spec:
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{{- with index .Values "validationFailureActionByPolicy" $name }}
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validationFailureAction: {{ toYaml . }}
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{{- else }}
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validationFailureAction: {{ .Values.validationFailureAction }}
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{{- end }}
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{{- with concat (index .Values "validationFailureActionOverrides" "all") (default list (index .Values "validationFailureActionOverrides" $name)) }}
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validationFailureActionOverrides: {{ toYaml . | nindent 4 }}
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{{- end }}
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background: {{ .Values.background }}
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failurePolicy: {{ .Values.failurePolicy }}
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rules:
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- name: check-proc-mount
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match:
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any:
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- resources:
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kinds:
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- Pod
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{{- with index .Values "policyExclude" $name }}
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exclude:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with index .Values "policyPreconditions" $name }}
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preconditions:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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validate:
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message: >-
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Changing the proc mount from the default is not allowed. The fields
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spec.containers[*].securityContext.procMount, spec.initContainers[*].securityContext.procMount,
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and spec.ephemeralContainers[*].securityContext.procMount must be unset or
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set to `Default`.
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pattern:
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spec:
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=(ephemeralContainers):
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- =(securityContext):
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=(procMount): "Default"
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=(initContainers):
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- =(securityContext):
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=(procMount): "Default"
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containers:
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- =(securityContext):
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=(procMount): "Default"
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{{- end }}
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