Anonymous blob access configured in Azure storage account misconfiguration detected in code

Rule Details

Cortex AppSec Rule ID	APPSEC2_AZURE_47
Category - Subcategory	IAM - Overly Permissive
Provider	AZURE
Severity	MEDIUM
Framework	Terraform, Terraform Plan

Impact

This rule checks whether a storage account is configured to allow anonymous access to blob data. Anonymous access to blob data permits anyone on the internet to access or view the stored data without the need for any authentication. This poses a potential risk, as it exposes sensitive data to the public, increasing the likelihood of data leaks and privacy breaches.

How to Fix

Resource: azurerm_storage_account

• Arguments: allow_nested_items_to_be_public

To fix the issue, disable anonymous access to the blob content of your storage account: Set the allow_nested_items_to_be_public attribute to false. This ensures that no one can read blob content without proper authentication and authorization.

This code sets the allow_nested_items_to_be_public attribute to false, disabling anonymous access to the blob content. [source,go]

resource "azurerm_storage_account" "storage_account" { ... allow_nested_items_to_be_public = false }