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AWS Identity and Access Management
User Guide

Actions, Resources, and Condition Keys for AWS CloudFormation

AWS CloudFormation (service prefix: cloudformation) provides the following service-specific resources, actions, and condition context keys for use in IAM permission policies.

References:

Actions Defined by AWS CloudFormation

You can specify the following actions in the Action element of an IAM policy statement. By using policies, you define the permissions for anyone performing an operation in AWS. When you use an action in a policy, you usually allow or deny access to the API operation or CLI command with the same name. However, in some cases, a single action controls access to more than one operation. Alternatively, some operations require several different actions. For details about the columns in the following table, see The Actions Table.

Actions Description Access Level Resource Types (*required) Condition Keys Dependent Actions
CancelUpdateStack Cancels an update on the specified stack.

Write

stack*

ContinueUpdateRollback For a specified stack that is in the UPDATE_ROLLBACK_FAILED state, continues rolling it back to the UPDATE_ROLLBACK_COMPLETE state.

Write

stack*

CreateChangeSet Creates a list of changes for a stack.

Write

stack*

CreateStack Creates a stack as specified in the template.

Write

stack*

DeleteChangeSet Deletes the specified change set. Deleting change sets ensures that no one executes the wrong change set.

Write

stack*

DeleteStack Deletes a specified stack.

Write

stack*

DescribeAccountLimits Retrieves your account's AWS CloudFormation limits.

Read

DescribeStackEvents Returns all stack related events for a specified stack.

Read

stack*

DescribeStackResource Returns a description of the specified resource in the specified stack.

Read

stack*

DescribeStackResources Returns AWS resource descriptions for running and deleted stacks.

Read

stack*

DescribeStacks Returns the description for the specified stack.

List

stack*

EstimateTemplateCost Returns the estimated monthly cost of a template.

Read

ExecuteChangeSet Updates a stack using the input information that was provided when the specified change set was created.

Write

stack*

GetStackPolicy Returns the stack policy for a specified stack.

Read

stack*

GetTemplate Returns the template body for a specified stack.

Read

stack*

GetTemplateSummary Returns information about a new or existing template.

Read

stack*

ListChangeSets Returns the ID and status of each active change set for a stack. For example, AWS CloudFormation lists change sets that are in the CREATE_IN_PROGRESS or CREATE_PENDING state.

List

stack*

ListExports Lists all exported output values in the account and region in which you call this action.

List

ListImports Lists all stacks that are importing an exported output value.

List

ListStackResources Returns descriptions of all resources of the specified stack.

List

stack*

ListStacks Returns the summary information for stacks whose status matches the specified StackStatusFilter.

List

SetStackPolicy Sets a stack policy for a specified stack.

Permissions management

stack*

cloudformation:StackPolicyUrl

SignalResource Sends a signal to the specified resource with a success or failure status.

Write

stack*

UpdateStack Updates a stack as specified in the template.

Write

stack*

UpdateTerminationProtection Updates termination protection for the specified stack.

Write

stack*

ValidateTemplate Validates a specified template.

Write

Resources Defined by CloudFormation

The following resource types are defined by this service and can be used in the Resource element of IAM permission policy statements. Each action in the Actions table identifies the resource types that can be specified with that action. A resource type can also define which condition keys you can include in a policy. These keys are displayed in the last column of the table. For details about the columns in the following table, see The Resource Types Table.

Resource Types ARN Condition Keys
stack arn:${Partition}:cloudformation:${Region}:${Account}:stack/${StackName}/${Id}

Condition Keys for AWS CloudFormation

AWS CloudFormation defines the following condition keys that can be used in the Condition element of an IAM policy. You can use these keys to further refine the conditions under which the policy statement applies. For details about the columns in the following table, see The Condition Keys Table.

To view the global condition keys that are available to all services, see Available Global Condition Keys in the IAM Policy Reference.

Condition Keys Description Type
cloudformation:ChangeSetName An AWS CloudFormation change set name. Use to control which change sets IAM users can execute or delete. String
cloudformation:ResourceTypes The template resource types, such as <code>AWS::EC2::Instance</code>. Use to control which resource types IAM users can work with when they create or update a stack String
cloudformation:RoleArn The ARN of an IAM service role. Use to control which service role IAM users can use to work with stacks or change sets. ARN
cloudformation:StackPolicyUrl An Amazon S3 stack policy URL. Use to control which stack policies IAM users can associate with a stack during a create or update stack action. String
cloudformation:TemplateUrl An Amazon S3 template URL. Use to control which templates IAM users can use when they create or update stacks. String