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Enforce GCP IAM User-Managed Service Accounts Do Not Have Admin Privileges
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Policy Settings
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Enforce GCP IAM User-Managed Service Accounts Do Not Have Admin Privileges

Enforcing that GCP IAM user-managed service accounts do not have admin privileges is essential for maintaining the principle of least privilege. This minimizes the risk of unauthorized access and potential misuse of administrative capabilities, enhancing security by ensuring that service accounts only have the permissions necessary to perform their specific tasks.

This policy pack can help you configure the following settings for IAM user-managed service accounts:

  • Delete service accounts that have roles/owner, roles/admin or roles/editor privileges

Review policy settings →

Getting Started

Requirements

Credentials

To create a policy pack through Terraform:

  • Ensure you have Turbot/Admin permissions (or higher) in Guardrails
  • Create access keys in Guardrails

And then set your credentials:

export TURBOT_WORKSPACE=myworkspace.acme.com
export TURBOT_ACCESS_KEY=acce6ac5-access-key-here
export TURBOT_SECRET_KEY=a8af61ec-secret-key-here

Please see Turbot Guardrails Provider authentication for additional authentication methods.

Usage

Install Policy Pack

Note

By default, installed policy packs are not attached to any resources.

Policy packs must be attached to resources in order for their policy settings to take effect.

Clone:

git clone https://github.com/turbot/guardrails-samples.git
cd guardrails-samples/policy_packs/gcp/iam/enforce_user_service_accounts_to_not_have_admin_privileges

Run the Terraform to create the policy pack in your workspace:

terraform init
terraform plan

Then apply the changes:

terraform apply

Apply Policy Pack

Log into your Guardrails workspace and attach the policy pack to a resource.

If this policy pack is attached to a Guardrails folder, its policies will be applied to all accounts and resources in that folder. The policy pack can also be attached to multiple resources.

For more information, please see Policy Packs.

Enable Enforcement

Tip

You can also update the policy settings in this policy pack directly in the Guardrails console.

Please note your Terraform state file will then become out of sync and the policy settings should then only be managed in the console.

By default, the policies are set to Check in the pack's policy settings. To enable automated enforcements, you can switch these policies settings by adding a comment to the Check setting and removing the comment from one of the listed enforcement options:

resource "turbot_policy_setting" "gcp_iam_service_account_approved" {
  resource = turbot_policy_pack.main.id
  type     = "tmod:@turbot/gcp-iam#/policy/types/serviceAccountApproved"
  # value    = "Check: Approved"
  value    =  "Enforce: Delete unapproved if new"
}

Then re-apply the changes:

terraform plan
terraform apply