Container Registry should restrict public network access

High Azure General acr-no-public-access

Applies to

Microsoft.ContainerRegistry/registries

What CGPulse checks

A resource passes this rule when publicNetworkAccess must equal Disabled. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Disable public network access to prevent unauthorized internet exposure. In Azure Portal: Container Registry > Networking > set Public network access to Disabled. See: https://learn.microsoft.com/en-us/azure/container-registry/container-registry-access-selected-networks

Careful: Disabling public access blocks all image pulls/pushes not routed through private endpoints

CLI

az acr update --ids "{id}" --public-network-enabled false

Terraform

resource "azurerm_container_registry" "{name}" {
  name                          = "{name}"
  resource_group_name           = "{rg}"
  location                      = var.location
  sku                           = "Premium"
  public_network_access_enabled = false
}

Compliance frameworks

Vendor documentation

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