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zt_wl_022 — AKS cluster does not use Key Vault CSI driver for secrets

Summary

Severity: Medium · Pillar: Workload · Chain role: AMPLIFIER

Description

AKS clusters without the Azure Key Vault Secrets Provider add-on store secrets as Kubernetes Secrets, which are base64-encoded but not encrypted at the application layer. Using the Key Vault CSI driver ensures secrets are fetched directly from Key Vault and never persisted in etcd.

Mapping

Framework Control / Reference
NIST 800-53 SC-12
NIST 800-207 Tenet 1 - All data sources and computing services are considered resources
CIS Azure
MITRE ATT&CK Technique T1552
MITRE ATT&CK Tactic Credential Access
Zero-Trust Tenet Tenet 1
Framework tags nist-800-207, argus-zt

Source

Rule defined at policies/azure/zt/workload/zt_wl_022.rego.

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