TMA-AKS-4.2.2

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

VisokaNivo 1Automatskaaks

Opis

Minimize the admission of pods that request spec.hostPID=true so that only tightly controlled, explicitly approved platform workloads can share the host process ID namespace in AKS. In practice, this means users, groups, and service accounts with deployment rights should not broadly be able to create or update workloads that use host PID sharing, because Microsoft’s AKS identity guidance is to grant identities only the Kubernetes resources they ... Requires kubectl with cluster-wide read access (KUBECONFIG); system namespaces are excluded and listed resources must be remediated or documented as exceptions.

Kako se proverava

Metod provere: Komanda ljuske

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' "$out" | awk -v ex='^(kube-system|kube-public|kube-node-lease|gatekeeper-system|azure-arc)$' 'NF && $1 !~ ex && ($3=="true")')
if [ -z "$bad" ]; then echo compliant; else printf '%s\n' "$bad" | head -n 25; fi

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Add policies to each namespace in the cluster which has user workloads to restrict the admission of hostPID containers. Pod Security Policies and Assignments can be found by searching for Policies in the Azure Portal. A detailed step-by-step guide can be found here: https://learn.microsoft.com/en-us/azure/governance/policy/concepts/policy-for-kubernetes

Svojstva

Operativni sistemi: Bilo koji
Oznake: akspoliciespod-security
Referenca: CIS Azure Kubernetes Service (AKS) Benchmark v2.0.0 - 4.2.2 Minimize the admission of containers wishing to share the host process ID namespace

Proverite ovaj računar

Pokrenite ovo na računaru za koji imate dozvolu za proveru. Skeniranje radi u režimu samo za čitanje.

shell

tmaegis scan --target aks