TMA-OKE-4.2.2

Minimize the admission of containers wishing to share the host process ID namespace

HochStufe 1Automatisiertoke

Beschreibung

Minimize the admission of pods that request host process ID namespace sharing by restricting use of spec.hostPID: true in OKE workload namespaces. In the OKE Pod Security Standards model, this is enforced through Pod Security Admission or an equivalent policy engine. Because the baseline profile prohibits hostPID and restricted inherits that restriction, general user workloads should not be permitted to use host PID sharing. Requires kubectl with cluster-wide read access (KUBECONFIG); system namespaces are excluded and listed resources must be remediated or documented as exceptions.

So wird geprüft

Prüfmethode: Shell-Befehl

shell

out=$(kubectl get pods -A -o go-template='{{range .items}}{{.metadata.namespace}} {{.metadata.name}} {{.spec.hostPID}}{{"\n"}}{{end}}') || exit 1
bad=$(printf '%s\n' "$out" | awk -v ex='^(kube-system|kube-public|kube-node-lease)$' 'NF && $1 !~ ex && ($3=="true")')
if [ -z "$bad" ]; then echo compliant; else printf '%s\n' "$bad" | head -n 25; fi

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Configure Pod Security Admission on workload namespaces so pods that request spec.hostPID: true are denied at admission time. For this control, the baseline and restricted Pod Security Standards disallow hostPID, while restricted is typically the stronger choice for user workloads. For remediation, use enforce because only enforce rejects violating pods. warn and audit can help during rollout, but they do not block admission. Label each workload namespace to enforce restricted. kubectl label ns NAMESPACE pod-security.kubernetes.io/enforce=restricted --overwrite Add warn and audit during transition if you want visibility into violations before or alongside enforcement.

Eigenschaften

Betriebssysteme: Beliebig
Tags: okepoliciespod-security
Referenz: CIS Oracle Cloud Infrastructure Container Engine for Kubernetes (OKE) Benchmark v2.0.0 - 4.2.2 Minimize the admission of containers wishing to share the host process ID namespace

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shell

tmaegis scan --target oke