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DET-A2: Secure Key Release policy no longer requires attestation

A key's release policy was created or updated without a Microsoft Azure Attestation authority, or without pinning the TEE claims (SEV-SNP measurement or TDX MRTD): the key releases to a VM whose code was never attested.

Property Value
Severity critical
Platform Azure confidential VMs
Group tee
Log source Azure Key Vault · AuditEvent (KeyCreate/KeyUpdate)
Policy P-03
Related AZURE-SKR-01

Fires when

Key Vault release policy update AND policy no longer requires MAA attestation

How it runs

untrust detect --platform azure-cvm reads the Activity Log and Key Vault AuditEvent entries, live (with azure-mgmt-monitor and azure-identity installed) or from an exported file passed with --azure-log-file.

A match is a detection event with this rule's ID. Upload it to the console to alert on it; see Runtime detections.