Google Storage bucket level access disabled

This product is not supported for your selected Datadog site. ().

Metadata

Id: bb0db090-5509-4853-a827-75ced0b3caa0

Cloud Provider: GCP

Platform: Terraform

Severity: High

Category: Insecure Configurations

Learn More

Description

Google Storage Bucket Level Access controls access to objects at the bucket level rather than allowing fine-grained permissions at the object level. When disabled, Access Control Lists (ACLs) can be used to grant permissions to individual objects, increasing the risk of accidental exposure or misconfiguration that could lead to unauthorized access to sensitive data.

Enabling uniform bucket-level access simplifies permissions management and helps ensure consistent access control across all objects in a bucket. To secure your configuration, set uniform_bucket_level_access = true in your google_storage_bucket resource as shown below:

resource "google_storage_bucket" "secure_bucket" {
  name          = "image-store.com"
  location      = "EU"
  
  uniform_bucket_level_access = true
  
  // other configuration...
}

Compliant Code Examples

resource "google_storage_bucket" "negative1" {
  name          = "image-store.com"
  location      = "EU"
  force_destroy = true

  uniform_bucket_level_access = true

  website {
    main_page_suffix = "index.html"
    not_found_page   = "404.html"
  }
  cors {
    origin          = ["http://image-store.com"]
    method          = ["GET", "HEAD", "PUT", "POST", "DELETE"]
    response_header = ["*"]
    max_age_seconds = 3600
  }
}

Non-Compliant Code Examples

resource "google_storage_bucket" "positive1" {
  name          = "image-store.com"
  location      = "EU"
  force_destroy = true

  uniform_bucket_level_access = false

  website {
    main_page_suffix = "index.html"
    not_found_page   = "404.html"
  }
  cors {
    origin          = ["http://image-store.com"]
    method          = ["GET", "HEAD", "PUT", "POST", "DELETE"]
    response_header = ["*"]
    max_age_seconds = 3600
  }
}

resource "google_storage_bucket" "positive2" {
  name          = "image-store.com"
  location      = "EU"
  force_destroy = true

  website {
    main_page_suffix = "index.html"
    not_found_page   = "404.html"
  }
  cors {
    origin          = ["http://image-store.com"]
    method          = ["GET", "HEAD", "PUT", "POST", "DELETE"]
    response_header = ["*"]
    max_age_seconds = 3600
  }
}