CancelUpdateStackRequest
You can cancel only stacks that are in the UPDATE_IN_PROGRESS state.
A unique identifier for this CancelUpdateStack request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to cancel an update on a stack with the same name. You might retry CancelUpdateStack requests to ensure that CloudFormation successfully received them.
If you don't pass a parameter to StackName, the API returns a response that describes all resources in the account.
The IAM policy below can be added to IAM policies when you want to limit resource-level permissions and avoid returning a response when no parameter is sent in the request:
{ "Version": "2012-10-17", "Statement": [{ "Effect": "Deny", "Action": "cloudformation:DescribeStacks", "NotResource": "arn:aws:cloudformation:*:*:stack/*/*" }] }
The name or the unique stack ID that's associated with the stack.