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AZ-DISK-01: OS disk uses confidential encryption with the guest state

Property Value
Severity high
Platform Azure confidential VMs
Lifecycle stage deploy
Trust boundary memory
Mode Passive: read-only cloud API calls.

How to fix

  • Enable confidential OS disk encryption (securityEncryptionType DiskWithVMGuestState) with a key the workload controls, so the host cannot read the disk.

After the fix, scan again: the check should report PASS.

Scan inputs

The untrust scan options this check reads:

Option Description
--azure-resource-group Resource group of the VM.
--azure-subscription Subscription ID.
--azure-vm Confidential VM name.

Permissions

The cloud API calls this check makes, read from the scanner's source:

Cloud API call Permission Access
Azure arm.vm (GET virtual machine) Microsoft.Compute/virtualMachines/read read

See Required permissions for every check on this platform.

Generated from untrust 1.3.0 (commit 7ef462d9a0c3).