Trusted Microsoft Services Not Enabled

• Query id: 5400f379-a347-4bdd-a032-446465fdcc6f
• Query name: Trusted Microsoft Services Not Enabled
• Platform: Terraform
• Severity: High
• Category: Networking and Firewall
• URL: Github

Description

Trusted Microsoft Services should be enabled for Storage Account access
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

resource "azurerm_storage_account_network_rules" "positive1" {
  resource_group_name  = azurerm_resource_group.test.name
  storage_account_name = azurerm_storage_account.test.name

  default_action             = "Allow"
  ip_rules                   = ["127.0.0.1"]
  virtual_network_subnet_ids = [azurerm_subnet.test.id]
  bypass                     = ["Metrics"]
}

resource "azurerm_storage_account" "positive2" {
  name                = "storageaccountname"
  resource_group_name = azurerm_resource_group.example.name

  location                 = azurerm_resource_group.example.location
  account_tier             = "Standard"
  account_replication_type = "LRS"

  network_rules {
    default_action             = "Deny"
    bypass                     = ["None"]
    ip_rules                   = ["100.0.0.1"]
    virtual_network_subnet_ids = [azurerm_subnet.example.id]
  }

  tags = {
    environment = "staging"
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

resource "azurerm_storage_account" "negative1" {
  name                = "storageaccountname"
  resource_group_name = azurerm_resource_group.example.name

  location                 = azurerm_resource_group.example.location
  account_tier             = "Standard"
  account_replication_type = "LRS"

  network_rules {
    default_action             = "Deny"
    bypass                     = ["AzureServices"]
    ip_rules                   = ["100.0.0.1"]
    virtual_network_subnet_ids = [azurerm_subnet.example.id]
  }

  tags = {
    environment = "staging"
  }
}

resource "azurerm_storage_account_network_rules" "negative2" {
  resource_group_name  = azurerm_resource_group.test.name
  storage_account_name = azurerm_storage_account.test.name

  default_action             = "Allow"
  ip_rules                   = ["127.0.0.1"]
  virtual_network_subnet_ids = [azurerm_subnet.test.id]
  bypass                     = ["Metrics", "AzureServices"]
}