Control: Azure > CIS v3.0 > 04 - Storage Accounts > 04.17 - Ensure that 'Allow Blob Anonymous Access' is set to 'Disabled'

Configures auditing against a CIS Benchmark item.

Level: 1

The Azure Storage setting 'Allow Blob Anonymous Access' (aka "allowBlobPublicAccess") controls whether anonymous access is allowed for blob data in a storage account. When this property is set to True, it enables public read access to blob data, which can be convenient for sharing data but may carry security risks. When set to False, it disallows public access to blob data, providing a more secure storage environment.

If "Allow Blob Anonymous Access" is enabled, blobs can be accessed by adding the blob name to the URL to see the contents. An attacker can enumerate a blob using methods, such as brute force, and access them. Exfiltration of data by brute force enumeration of items from a storage account may occur if this setting is set to 'Enabled'.

Resource Types

This control targets the following resource types:

Azure > Storage > Storage Account

Policies

This control type relies on these other policies when running actions:

In Your Workspace

Developers

Control Type URI

tmod:@turbot/azure-cisv3-0#/control/types/r0417

Category URI

tmod:@turbot/cis#/control/categories/v071406

GraphQL

query controlType(id: "tmod:@turbot/azure-cisv3-0#/control/types/r0417") { … }

query controls(filter: "controlTypeId:'tmod:@turbot/azure-cisv3-0#/control/types/r0417'") { … }

CLI

Get Controls

turbot graphql controls --filter "controlTypeId:tmod:@turbot/azure-cisv3-0#/control/types/r0417"