Ensure secure transfer required is enabled

Error: Secure transfer required is not enabled

Bridgecrew Policy ID: BC_AZR_STORAGE_1
Checkov Check ID: CKV_AZURE_3
Severity: HIGH

Secure transfer required is not enabled

Description

Microsoft recommends that you always require secure transfer for all of your storage accounts. When secure transfer is required a call to an Azure Storage REST API operation must be made over HTTPS. A request made over HTTP is rejected.

We recommend you configure Azure Blob storage to accept requests from secure connections only. This is achieved by setting the Secure Transfer Required property. When you require secure transfer, any requests originating from an insecure connection are rejected.

Fix - Runtime

Azure Portal

To change the policy using the Azure Portal, follow these steps:

  1. Log in to the Azure Portal at https://portal.azure.com.
  2. Navigate to the storage account in question.
  3. Select Configuration on the left-hand menu.
  4. Select Enabled for Secure transfer required.
  5. Click Save.

CLI Command

az storage account update -g {ResourceGroupName} -n {StorageAccountName} --https-only true

Fix - Buildtime

Terraform

  • Resource: azurerm_storage_account
  • Attribute: enable_https_traffic_only
resource "azurerm_storage_account" "storage_account" {
  ...
- enable_https_traffic_only = false
+ enable_https_traffic_only = true
}

ARM Template

{
  "name": "example",
  "type": "Microsoft.Storage/storageAccounts",
  "apiVersion": "2019-06-01",
  "location": "[parameters('location')]",
  "properties": {
-   "supportsHttpsTrafficOnly": "false"
+   "supportsHttpsTrafficOnly": "true"
  },
  "dependsOn": [],
  "sku": {
    "name": "Standard_LRS"
  },
  "kind": "StorageV2",
  "tags": {},
}

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