Managed Disk should be encrypted

High Azure General disk-managed-disks-2

Applies to

Microsoft.Compute/disks

What CGPulse checks

A resource passes this rule when encryption.type must be set. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Verify and enable disk encryption to protect data at rest from media compromise. In Azure Portal: Managed Disk > Encryption > verify encryption status. See: https://learn.microsoft.com/en-us/azure/virtual-machines/disk-encryption-overview

CLI

az disk show --ids "{id}" --query "encryption" -o json

Bicep

// Azure managed disks are encrypted at rest by default with platform-managed keys. For CMK, configure a Disk Encryption Set

Terraform

# Azure managed disks are encrypted by default with platform-managed keys
resource "azurerm_managed_disk" "{name}" {
  name                 = "{name}"
  resource_group_name  = "{rg}"
  location             = var.location
  storage_account_type = "Standard_LRS"
  create_option        = "Empty"
  disk_size_gb         = 128
  # For CMK: disk_encryption_set_id = azurerm_disk_encryption_set.{name}.id
}

Compliance frameworks

Vendor documentation

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