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Add severity to pod security policies (#1797)
Signed-off-by: Frank Jogeleit <fj@move-elevator.de>
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Frank Jogeleit
GitHub
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16 changed files with 45 additions and 0 deletions
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@ -103,6 +103,7 @@ The following table lists the configurable parameters of the kyverno chart and t
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| `tolerations` | list of node taints to tolerate | `[]` |
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| `securityContext` | security context configuration | `{}` |
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| `podSecurityStandard` | set desired pod security level `privileged`, `default`, `restricted`, `custom`. Set to `restricted` for maximum security for your cluster. See: https://kyverno.io/policies/pod-security/ | `default` |
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| `podSecuritySeverity` | set desired pod security severity `low`, `medium`, `high`. Used severity level in PolicyReportResults for the selected pod security policies. | `medium` |
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| `podSecurityPolicies` | Policies to include when `podSecurityStandard` is set to `custom` | `[]` |
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| `validationFailureAction` | set to get response in failed validation check. Supported values- `audit`, `enforce`. See: https://kyverno.io/docs/writing-policies/validate/ | `audit` |
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Capabilities permit privileged actions without giving full root access.
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Adding capabilities beyond the default set must not be allowed.
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Host namespaces (Process ID namespace, Inter-Process Communication namespace, and
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network namespace) allow access to shared information and can be used to elevate
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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HostPath volumes let pods use host directories and volumes in containers.
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Using host resources can be used to access shared data or escalate privileges
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Access to host ports allows potential snooping of network traffic and should not be
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allowed, or at minimum restricted to a known list.
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Privileged mode disables most security mechanisms and must not be allowed.
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spec:
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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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.
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spec:
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@ -7,6 +7,9 @@ metadata:
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annotations:
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policies.kyverno.io/title: Disallow SELinux
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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SELinux options can be used to escalate privileges and should not be allowed.
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spec:
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@ -7,6 +7,9 @@ metadata:
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annotations:
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policies.kyverno.io/title: Restrict AppArmor
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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On supported hosts, the 'runtime/default' AppArmor profile is applied by default.
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The default policy should prevent overriding or disabling the policy, or restrict
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Default)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Sysctls can disable security mechanisms or affect all containers on a
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host, and should be disallowed except for an allowed "safe" subset. A
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Privilege escalation, such as via set-user-ID or set-group-ID file mode, should not be allowed.
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spec:
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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Containers should be forbidden from running with a root primary or supplementary GID.
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spec:
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: Containers must be required to run as non-root users.
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spec:
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background: true
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@ -7,6 +7,9 @@ metadata:
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annotations:
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policies.kyverno.io/title: Restrict Seccomp
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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The runtime default seccomp profile must be required, or only specific
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additional profiles should be allowed.
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@ -6,6 +6,9 @@ metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end -}}
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policies.kyverno.io/description: >-
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In addition to restricting HostPath volumes, the restricted pod security profile
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limits usage of non-core volume types to those defined through PersistentVolumes.
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@ -4,6 +4,8 @@ namespace:
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# Supported- default/restricted/privileged/custom
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# For more info- https://kyverno.io/policies/pod-security
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podSecurityStandard: default
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# Supported- low/medium/high
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podSecuritySeverity: medium
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# Policies to include when podSecurityStandard is custom
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podSecurityPolicies: []
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# Supported values- `audit`, `enforce`
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