Policy: Azure > CIS v4.0 > 10 - Storage Services

Covers security recommendations to follow to set storage account policies on an Azure Subscription. An Azure storage account provides a unique namespace to store and access Azure Storage data objects.

Targets

This policy targets the following resource types:

Primary Policy

This policy is used with the following primary policy:

Azure > CIS v4.0

Controls

Setting this policy configures these controls:

Azure > CIS v4.0 > 10 - Storage Services > 10.01 - Azure Files > 10.01.01 - Ensure soft delete for Azure File Shares is Enabled
Azure > CIS v4.0 > 10 - Storage Services > 10.01 - Azure Files > 10.01.02 - Ensure 'SMB protocol version' is set to 'SMB 3.1.1' or higher for SMB file shares
Azure > CIS v4.0 > 10 - Storage Services > 10.01 - Azure Files > 10.01.03 - Ensure 'SMB channel encryption' is set to 'AES-256-GCM' or higher for SMB file shares
Azure > CIS v4.0 > 10 - Storage Services > 10.02 - Azure Blob Storage > 10.02.01 - Ensure that soft delete for blobs on Azure Blob Storage storage accounts is Enabled
Azure > CIS v4.0 > 10 - Storage Services > 10.02 - Azure Blob Storage > 10.02.02 - Ensure 'Versioning' is set to 'Enabled' on Azure Blob Storage storage accounts
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.01 - Secrets and Keys > 10.03.01.01 - Ensure that 'Enable key rotation reminders' is enabled for each Storage Account
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.01 - Secrets and Keys > 10.03.01.02 - Ensure that Storage Account access keys are periodically regenerated
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.01 - Secrets and Keys > 10.03.01.03 - Ensure 'Allow storage account key access' for Azure Storage Accounts is 'Disabled'
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.02 - Networking > 10.03.02.01 - Ensure Private Endpoints are used to access Storage Accounts
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.02 - Networking > 10.03.02.02 - Ensure that 'Public Network Access' is 'Disabled' for storage accounts
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.02 - Networking > 10.03.02.03 - Ensure default network access rule for storage accounts is set to deny
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.03 - Identity and Access Management > 10.03.03.01 - Ensure that 'Default to Microsoft Entra authorization in the Azure portal' is set to 'Enabled'
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.04 - Ensure that 'Secure transfer required' is set to 'Enabled'
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.05 - Ensure 'Allow Azure services on the trusted services list to access this storage account' is Enabled for Storage Account Access
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.06 - Ensure Soft Delete is Enabled for Azure Containers and Blob Storage
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.07 - Ensure the 'Minimum TLS version' for storage accounts is set to 'Version 1.2'
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.08 - Ensure 'Cross Tenant Replication' is not enabled
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.09 - Ensure that 'Allow Blob Anonymous Access' is set to 'Disabled'
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.10 - Ensure Azure Resource Manager Delete locks are applied to Azure Storage Accounts
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.11 - Ensure Azure Resource Manager ReadOnly locks are considered for Azure Storage Accounts
Azure > CIS v4.0 > 10 - Storage Services > 10.03 - Storage Accounts > 10.03.12 - Ensure Redundancy is set to 'geo-redundant storage (GRS)' on critical Azure Storage Accounts

Policy Specification

Schema Type	`string`
Default	`Per Azure > CIS v4.0`
Valid Values [YAML]	`Per Azure > CIS v4.0` `Skip` `Check: All CIS Benchmarks except attestations` `Check: All CIS Benchmarks`
Examples [YAML]	`Skip`

In Your Workspace

Policy Settings by Type report

Developers

Category URI

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

Policy Type URI

tmod:@turbot/azure-cisv4-0#/policy/types/s10

GraphQL

query policyType(id: "tmod:@turbot/azure-cisv4-0#/policy/types/s10") { … }

query policySettings(filter: "policyTypeId:'tmod:@turbot/azure-cisv4-0#/policy/types/s10'") { … }

query policyValues(filter: "policyTypeId:'tmod:@turbot/azure-cisv4-0#/policy/types/s10'") { … }

CLI

Get Policy Type

turbot graphql policy-type --id "tmod:@turbot/azure-cisv4-0#/policy/types/s10"

Get Policy Settings

turbot graphql policy-settings --filter "policyTypeId:tmod:@turbot/azure-cisv4-0#/policy/types/s10"