aws.iam.simulate_principal_policy

Example SQL Queries

SELECT * FROM
aws.iam.simulate_principal_policy
WHERE
"policy_source_arn" = 'VALUE'
AND "action_names" = 'VALUE';

Description

Simulate how a set of IAM policies attached to an IAM entity works with a list of API operations and Amazon Web Services resources to determine the policies' effective permissions. The entity can be an IAM user, group, or role. If you specify a user, then the simulation also includes all of the policies that are attached to groups that the user belongs to. You can simulate resources that don't exist in your account.

You can optionally include a list of one or more additional policies specified as strings to include in the simulation. If you want to simulate only policies specified as strings, use SimulateCustomPolicy instead.

You can also optionally include one resource-based policy to be evaluated with each of the resources included in the simulation for IAM users only.

The simulation does not perform the API operations; it only checks the authorization to determine if the simulated policies allow or deny the operations.

Note: This operation discloses information about the permissions granted to other users. If you do not want users to see other user's permissions, then consider allowing them to use SimulateCustomPolicy instead.

Context keys are variables maintained by Amazon Web Services and its services that provide details about the context of an API query request. You can use the Condition element of an IAM policy to evaluate context keys. To get the list of context keys that the policies require for correct simulation, use GetContextKeysForPrincipalPolicy.

If the output is long, you can use the MaxItems and Marker parameters to paginate the results.

The IAM policy simulator evaluates statements in the identity-based policy and the inputs that you provide during simulation. The policy simulator results can differ from your live Amazon Web Services environment. We recommend that you check your policies against your live Amazon Web Services environment after testing using the policy simulator to confirm that you have the desired results. For more information about using the policy simulator, see Testing IAM policies with the IAM policy simulator in the IAM User Guide.

Table Definition

Column Name	Column Data Type
`action_names` Required Input Column A list of names of API operations to evaluate in the simulation. Each operation is evaluated for each resource. Each operation must include the service identifier, such as `iam:CreateUser`.	VARCHAR[]
Show child fields `action_names[]`
`policy_source_arn` Required Input Column The Amazon Resource Name (ARN) of a user, group, or role whose policies you want to include in the simulation. If you specify a user, group, or role, the simulation includes all policies that are associated with that entity. If you specify a user, the simulation also includes all policies that are attached to any groups the user belongs to. The maximum length of the policy document that you can pass in this operation, including whitespace, is listed below. To view the maximum character counts of a managed policy with no whitespaces, see IAM and STS character quotas. For more information about ARNs, see Amazon Resource Names (ARNs) in the Amazon Web Services General Reference.	VARCHAR
`caller_arn` Input Column The ARN of the IAM user that you want to specify as the simulated caller of the API operations. If you do not specify a `CallerArn`, it defaults to the ARN of the user that you specify in `PolicySourceArn`, if you specified a user. If you include both a `PolicySourceArn` (for example, `arn:aws:iam::123456789012:user/David`) and a `CallerArn` (for example, `arn:aws:iam::123456789012:user/Bob`), the result is that you simulate calling the API operations as Bob, as if Bob had David's policies. You can specify only the ARN of an IAM user. You cannot specify the ARN of an assumed role, federated user, or a service principal. `CallerArn` is required if you include a `ResourcePolicy` and the `PolicySourceArn` is not the ARN for an IAM user. This is required so that the resource-based policy's `Principal` element has a value to use in evaluating the policy. For more information about ARNs, see Amazon Resource Names (ARNs) in the Amazon Web Services General Reference.	VARCHAR
`context_entries` Input Column A list of context keys and corresponding values for the simulation to use. Whenever a context key is evaluated in one of the simulated IAM permissions policies, the corresponding value is supplied.	STRUCT( "context_key_name" VARCHAR, "context_key_values" VARCHAR[], "context_key_type" VARCHAR )[]
Show child fields `context_entries[]` Show child fields `context_entries[].context_key_name` The full name of a condition context key, including the service prefix. For example, `aws:SourceIp` or `s3:VersionId`. `context_entries[].context_key_type` The data type of the value (or values) specified in the `ContextKeyValues` parameter. `context_entries[].context_key_values[]`
`permissions_boundary_policy_input_list` Input Column The IAM permissions boundary policy to simulate. The permissions boundary sets the maximum permissions that the entity can have. You can input only one permissions boundary when you pass a policy to this operation. An IAM entity can only have one permissions boundary in effect at a time. For example, if a permissions boundary is attached to an entity and you pass in a different permissions boundary policy using this parameter, then the new permissions boundary policy is used for the simulation. For more information about permissions boundaries, see Permissions boundaries for IAM entities in the IAM User Guide. The policy input is specified as a string containing the complete, valid JSON text of a permissions boundary policy. The maximum length of the policy document that you can pass in this operation, including whitespace, is listed below. To view the maximum character counts of a managed policy with no whitespaces, see IAM and STS character quotas. The regex pattern used to validate this parameter is a string of characters consisting of the following: Any printable ASCII character ranging from the space character (`\u0020`) through the end of the ASCII character range The printable characters in the Basic Latin and Latin-1 Supplement character set (through `\u00FF`) The special characters tab (`\u0009`), line feed (`\u000A`), and carriage return (`\u000D`)	VARCHAR[]
Show child fields `permissions_boundary_policy_input_list[]`
`policy_input_list` Input Column An optional list of additional policy documents to include in the simulation. Each document is specified as a string containing the complete, valid JSON text of an IAM policy. The regex pattern used to validate this parameter is a string of characters consisting of the following: Any printable ASCII character ranging from the space character (`\u0020`) through the end of the ASCII character range The printable characters in the Basic Latin and Latin-1 Supplement character set (through `\u00FF`) The special characters tab (`\u0009`), line feed (`\u000A`), and carriage return (`\u000D`)	VARCHAR[]
Show child fields `policy_input_list[]`
`resource_arns` Input Column A list of ARNs of Amazon Web Services resources to include in the simulation. If this parameter is not provided, then the value defaults to `` (all resources). Each API in the `ActionNames` parameter is evaluated for each resource in this list. The simulation determines the access result (allowed or denied) of each combination and reports it in the response. You can simulate resources that don't exist in your account. The simulation does not automatically retrieve policies for the specified resources. If you want to include a resource policy in the simulation, then you must include the policy as a string in the `ResourcePolicy` parameter. For more information about ARNs, see Amazon Resource Names (ARNs) in the Amazon Web Services General Reference*. Simulation of resource-based policies isn't supported for IAM roles.	VARCHAR[]
Show child fields `resource_arns[]`
`resource_handling_option` Input Column Specifies the type of simulation to run. Different API operations that support resource-based policies require different combinations of resources. By specifying the type of simulation to run, you enable the policy simulator to enforce the presence of the required resources to ensure reliable simulation results. If your simulation does not match one of the following scenarios, then you can omit this parameter. The following list shows each of the supported scenario values and the resources that you must define to run the simulation. Each of the Amazon EC2 scenarios requires that you specify instance, image, and security group resources. If your scenario includes an EBS volume, then you must specify that volume as a resource. If the Amazon EC2 scenario includes VPC, then you must supply the network interface resource. If it includes an IP subnet, then you must specify the subnet resource. For more information on the Amazon EC2 scenario options, see Supported platforms in the Amazon EC2 User Guide. EC2-VPC-InstanceStore instance, image, security group, network interface EC2-VPC-InstanceStore-Subnet instance, image, security group, network interface, subnet EC2-VPC-EBS instance, image, security group, network interface, volume EC2-VPC-EBS-Subnet instance, image, security group, network interface, subnet, volume	VARCHAR
`resource_owner` Input Column An Amazon Web Services account ID that specifies the owner of any simulated resource that does not identify its owner in the resource ARN. Examples of resource ARNs include an S3 bucket or object. If `ResourceOwner` is specified, it is also used as the account owner of any `ResourcePolicy` included in the simulation. If the `ResourceOwner` parameter is not specified, then the owner of the resources and the resource policy defaults to the account of the identity provided in `CallerArn`. This parameter is required only if you specify a resource-based policy and account that owns the resource is different from the account that owns the simulated calling user `CallerArn`.	VARCHAR
`resource_policy` Input Column A resource-based policy to include in the simulation provided as a string. Each resource in the simulation is treated as if it had this policy attached. You can include only one resource-based policy in a simulation. The maximum length of the policy document that you can pass in this operation, including whitespace, is listed below. To view the maximum character counts of a managed policy with no whitespaces, see IAM and STS character quotas. The regex pattern used to validate this parameter is a string of characters consisting of the following: Any printable ASCII character ranging from the space character (`\u0020`) through the end of the ASCII character range The printable characters in the Basic Latin and Latin-1 Supplement character set (through `\u00FF`) The special characters tab (`\u0009`), line feed (`\u000A`), and carriage return (`\u000D`) Simulation of resource-based policies isn't supported for IAM roles.	VARCHAR
`_aws_profile` Input Column The AWS profile defines the AWS identity used. It can be defined via credentials or by assuming a IAM role.	STRUCT( "type" VARCHAR, "name" VARCHAR, "account_id" VARCHAR, "via_profile_name" VARCHAR, "assumed_role_arn" VARCHAR, "organization" STRUCT( "account_name" VARCHAR, "id" VARCHAR, "tags" STRUCT( "key" VARCHAR, "value" VARCHAR )[], "master_account" STRUCT( "id" VARCHAR, "email" VARCHAR ), "parents" STRUCT( "type" VARCHAR, "id" VARCHAR, "name" VARCHAR, "tags" STRUCT( "key" VARCHAR, "value" VARCHAR )[] )[] ) )
Show child fields `_aws_profile.account_id` The AWS account id `_aws_profile.assumed_role_arn` The ARN of the assumed role `_aws_profile.name` The unique name of the profile. `_aws_profile.organization` Information about this profile's membership in the AWS organization. Show child fields `_aws_profile.organization.account_name` The name of account speciifed by the organization `_aws_profile.organization.id` The organization id `_aws_profile.organization.master_account` Show child fields `_aws_profile.organization.master_account.email` The organization master account email address `_aws_profile.organization.master_account.id` The organization master account id `_aws_profile.organization.parents[]` Show child fields `_aws_profile.organization.parents[].id` The id of the parent `_aws_profile.organization.parents[].name` The name of the parent `_aws_profile.organization.parents[].tags[]` Show child fields `_aws_profile.organization.parents[].tags[].key` `_aws_profile.organization.parents[].tags[].value` `_aws_profile.organization.parents[].type` The type of parent can be an organization unit or a root `_aws_profile.organization.tags[]` Show child fields `_aws_profile.organization.tags[].key` `_aws_profile.organization.tags[].value` `_aws_profile.type` The type of profile, either 'credentials' or 'assumed_role' `_aws_profile.via_profile_name` This IAM role for this profile is assumed by first utilizing another profile with this name to obtain credentials.
`eval_action_name` The name of the API operation tested on the indicated resource.	VARCHAR
`eval_decision` The result of the simulation.	VARCHAR
`eval_decision_details` Additional details about the results of the cross-account evaluation decision. This parameter is populated for only cross-account simulations. It contains a brief summary of how each policy type contributes to the final evaluation decision. If the simulation evaluates policies within the same account and includes a resource ARN, then the parameter is present but the response is empty. If the simulation evaluates policies within the same account and specifies all resources (`*`), then the parameter is not returned. When you make a cross-account request, Amazon Web Services evaluates the request in the trusting account and the trusted account. The request is allowed only if both evaluations return `true`. For more information about how policies are evaluated, see Evaluating policies within a single account. If an Organizations SCP included in the evaluation denies access, the simulation ends. In this case, policy evaluation does not proceed any further and this parameter is not returned.	MAP(VARCHAR, VARCHAR)
`eval_resource_name` The ARN of the resource that the indicated API operation was tested on.	VARCHAR
`matched_statements` A list of the statements in the input policies that determine the result for this scenario. Remember that even if multiple statements allow the operation on the resource, if only one statement denies that operation, then the explicit deny overrides any allow. In addition, the deny statement is the only entry included in the result.	STRUCT( "source_policy_id" VARCHAR, "source_policy_type" VARCHAR, "start_position" STRUCT( "line" BIGINT, "column" BIGINT ), "end_position" STRUCT( "line" BIGINT, "column" BIGINT ) )[]
Show child fields `matched_statements[]` Show child fields `matched_statements[].end_position` The row and column of the end of a `Statement` in an IAM policy. Show child fields `matched_statements[].end_position.column` The column in the line containing the specified position in the document. `matched_statements[].end_position.line` The line containing the specified position in the document. `matched_statements[].source_policy_id` The identifier of the policy that was provided as an input. `matched_statements[].source_policy_type` The type of the policy. `matched_statements[].start_position` The row and column of the beginning of the `Statement` in an IAM policy. Show child fields `matched_statements[].start_position.column` The column in the line containing the specified position in the document. `matched_statements[].start_position.line` The line containing the specified position in the document.
`missing_context_values` A list of context keys that are required by the included input policies but that were not provided by one of the input parameters. This list is used when the resource in a simulation is "*", either explicitly, or when the `ResourceArns` parameter blank. If you include a list of resources, then any missing context values are instead included under the `ResourceSpecificResults` section. To discover the context keys used by a set of policies, you can call GetContextKeysForCustomPolicy or GetContextKeysForPrincipalPolicy.	VARCHAR[]
Show child fields `missing_context_values[]`
`organizations_decision_detail` A structure that details how Organizations and its service control policies affect the results of the simulation. Only applies if the simulated user's account is part of an organization.	STRUCT( "allowed_by_organizations" BOOLEAN )
Show child fields `organizations_decision_detail.allowed_by_organizations` Specifies whether the simulated operation is allowed by the Organizations service control policies that impact the simulated user's account.
`permissions_boundary_decision_detail` Contains information about the effect that a permissions boundary has on a policy simulation when the boundary is applied to an IAM entity.	STRUCT( "allowed_by_permissions_boundary" BOOLEAN )
Show child fields `permissions_boundary_decision_detail.allowed_by_permissions_boundary` Specifies whether an action is allowed by a permissions boundary that is applied to an IAM entity (user or role). A value of `true` means that the permissions boundary does not deny the action. This means that the policy includes an `Allow` statement that matches the request. In this case, if an identity-based policy also allows the action, the request is allowed. A value of `false` means that either the requested action is not allowed (implicitly denied) or that the action is explicitly denied by the permissions boundary. In both of these cases, the action is not allowed, regardless of the identity-based policy.
`resource_specific_results` The individual results of the simulation of the API operation specified in EvalActionName on each resource.	STRUCT( "eval_resource_name" VARCHAR, "eval_resource_decision" VARCHAR, "matched_statements" STRUCT( "source_policy_id" VARCHAR, "source_policy_type" VARCHAR, "start_position" STRUCT( "line" BIGINT, "column" BIGINT ), "end_position" STRUCT( "line" BIGINT, "column" BIGINT ) )[], "missing_context_values" VARCHAR[], "eval_decision_details" MAP(VARCHAR, VARCHAR), "permissions_boundary_decision_detail" STRUCT( "allowed_by_permissions_boundary" BOOLEAN ) )[]
Show child fields `resource_specific_results[]` Show child fields `resource_specific_results[].eval_decision_details` Additional details about the results of the evaluation decision on a single resource. This parameter is returned only for cross-account simulations. This parameter explains how each policy type contributes to the resource-specific evaluation decision. `resource_specific_results[].eval_resource_decision` The result of the simulation of the simulated API operation on the resource specified in `EvalResourceName`. `resource_specific_results[].eval_resource_name` The name of the simulated resource, in Amazon Resource Name (ARN) format. `resource_specific_results[].matched_statements[]` Show child fields `resource_specific_results[].matched_statements[].end_position` The row and column of the end of a `Statement` in an IAM policy. Show child fields `resource_specific_results[].matched_statements[].end_position.column` The column in the line containing the specified position in the document. `resource_specific_results[].matched_statements[].end_position.line` The line containing the specified position in the document. `resource_specific_results[].matched_statements[].source_policy_id` The identifier of the policy that was provided as an input. `resource_specific_results[].matched_statements[].source_policy_type` The type of the policy. `resource_specific_results[].matched_statements[].start_position` The row and column of the beginning of the `Statement` in an IAM policy. Show child fields `resource_specific_results[].matched_statements[].start_position.column` The column in the line containing the specified position in the document. `resource_specific_results[].matched_statements[].start_position.line` The line containing the specified position in the document. `resource_specific_results[].missing_context_values[]` `resource_specific_results[].permissions_boundary_decision_detail` Contains information about the effect that a permissions boundary has on a policy simulation when that boundary is applied to an IAM entity. Show child fields `resource_specific_results[].permissions_boundary_decision_detail.allowed_by_permissions_boundary` Specifies whether an action is allowed by a permissions boundary that is applied to an IAM entity (user or role). A value of `true` means that the permissions boundary does not deny the action. This means that the policy includes an `Allow` statement that matches the request. In this case, if an identity-based policy also allows the action, the request is allowed. A value of `false` means that either the requested action is not allowed (implicitly denied) or that the action is explicitly denied by the permissions boundary. In both of these cases, the action is not allowed, regardless of the identity-based policy.