This component is responsible for configuring AWS Identity and Access Management Access Analyzer within an AWS Organization.

IAM Access Analyzer helps you identify the resources in your organization and accounts, such as Amazon S3 buckets or IAM roles, shared with an external entity. This lets you identify unintended access to your resources and data, which is a security risk. IAM Access Analyzer identifies resources shared with external principals by using logic-based reasoning to analyze the resource-based policies in your AWS environment. For each instance of a resource shared outside of your account, IAM Access Analyzer generates a finding. Findings include information about the access and the external principal granted to it. You can review findings to determine if the access is intended and safe or if the access is unintended and a security risk. In addition to helping you identify resources shared with an external entity, you can use IAM Access Analyzer findings to preview how your policy affects public and cross-account access to your resource before deploying resource permissions. The findings are organized in a visual summary dashboard. The dashboard highlights the split between public and cross-account access findings, and provides a breakdown of findings by resource type.

IAM Access Analyzer analyzes only policies applied to resources in the same AWS Region where it's enabled. To monitor all resources in your AWS environment, you must create an analyzer to enable IAM Access Analyzer in each Region where you're using supported AWS resources.

AWS Identity and Access Management Access Analyzer provides the following capabilities:

• IAM Access Analyzer external access analyzers help identify resources in your organization and accounts that are shared with an external entity.

• IAM Access Analyzer unused access analyzers help identify unused access in your organization and accounts.

• IAM Access Analyzer validates IAM policies against policy grammar and AWS best practices.

• IAM Access Analyzer custom policy checks help validate IAM policies against your specified security standards.

• IAM Access Analyzer generates IAM policies based on access activity in your AWS CloudTrail logs.

Here's a typical workflow:

Delegate Access Analyzer to another account: From the Organization management (root) account, delegate administration to a specific AWS account within your organization (usually the security account).

Create Access Analyzers in the Delegated Administrator Account: Enable the Access Analyzers for external access and unused access in the delegated administrator account.

Deployment Overview

components:
  terraform:
    access-analyzer/defaults:
      metadata:
        component: access-analyzer
        type: abstract
      vars:
        enabled: true
        global_environment: gbl
        account_map_tenant: core
        root_account_stage: root
        delegated_administrator_account_name: core-mgt
        accessanalyzer_service_principal: "access-analyzer.amazonaws.com"
        accessanalyzer_organization_enabled: false
        accessanalyzer_organization_unused_access_enabled: false
        organizations_delegated_administrator_enabled: false

import:
  - catalog/access-analyzer/defaults

components:
  terraform:
    access-analyzer/root:
      metadata:
        component: access-analyzer
        inherits:
          - access-analyzer/defaults
      vars:
        organizations_delegated_administrator_enabled: true

import:
  - catalog/access-analyzer/defaults

components:
  terraform:
    access-analyzer/delegated-administrator:
      metadata:
        component: access-analyzer
        inherits:
          - access-analyzer/defaults
      vars:
        accessanalyzer_organization_enabled: true
        accessanalyzer_organization_unused_access_enabled: true
        unused_access_age: 30

Provisioning

Delegate Access Analyzer to the security account:

atmos terraform apply access-analyzer/root -s plat-dev-gbl-root

Provision Access Analyzers for external access and unused access in the delegated administrator (security) account in each region:

atmos terraform apply access-analyzer/delegated-administrator -s plat-dev-use1-mgt

Requirements

Name	Version
terraform	>= 1.3.0
aws	>= 4.9.0

Providers

Name	Version
aws	>= 4.9.0

Modules

Name	Source	Version
account_map	cloudposse/stack-config/yaml//modules/remote-state	1.8.0
iam_roles	../account-map/modules/iam-roles	n/a
this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_accessanalyzer_analyzer.organization	resource
aws_accessanalyzer_analyzer.organization_unused_access	resource
aws_organizations_delegated_administrator.default	resource

Inputs

Name	Description	Type	Default	Required
accessanalyzer_organization_enabled	Flag to enable the Organization Access Analyzer	bool	n/a	yes
accessanalyzer_organization_unused_access_enabled	Flag to enable the Organization unused access Access Analyzer	bool	n/a	yes
accessanalyzer_service_principal	The Access Analyzer service principal for which you want to make the member account a delegated administrator	string	"access-analyzer.amazonaws.com"	no
account_map_tenant	The tenant where the account_map component required by remote-state is deployed	string	n/a	yes
additional_tag_map	Additional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id. This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration.	map(string)	{}	no
attributes	ID element. Additional attributes (e.g. workers or cluster) to add to id, in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the delimiter and treated as a single ID element.	list(string)	[]	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as null to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	any	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "descriptor_formats": {}, "enabled": true, "environment": null, "id_length_limit": null, "label_key_case": null, "label_order": [], "label_value_case": null, "labels_as_tags": [ "unset" ], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {}, "tenant": null }	no
delegated_administrator_account_name	The name of the account that is the AWS Organization Delegated Administrator account	string	n/a	yes
delimiter	Delimiter to be used between ID elements. Defaults to - (hyphen). Set to "" to use no delimiter at all.	string	null	no
descriptor_formats	Describe additional descriptors to be output in the descriptors output map. Map of maps. Keys are names of descriptors. Values are maps of the form {<br/> format = string<br/> labels = list(string)<br/>} (Type is any so the map values can later be enhanced to provide additional options.) format is a Terraform format string to be passed to the format() function. labels is a list of labels, in order, to pass to format() function. Label values will be normalized before being passed to format() so they will be identical to how they appear in id. Default is {} (descriptors output will be empty).	any	{}	no
enabled	Set to false to prevent the module from creating any resources	bool	null	no
environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	string	null	no
global_environment	Global environment name	string	"gbl"	no
id_length_limit	Limit id to this many characters (minimum 6). Set to 0 for unlimited length. Set to null for keep the existing setting, which defaults to 0. Does not affect id_full.	number	null	no
label_key_case	Controls the letter case of the tags keys (label names) for tags generated by this module. Does not affect keys of tags passed in via the tags input. Possible values: lower, title, upper. Default value: title.	string	null	no
label_order	The order in which the labels (ID elements) appear in the id. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	list(string)	null	no
label_value_case	Controls the letter case of ID elements (labels) as included in id, set as tag values, and output by this module individually. Does not affect values of tags passed in via the tags input. Possible values: lower, title, upper and none (no transformation). Set this to title and set delimiter to "" to yield Pascal Case IDs. Default value: lower.	string	null	no
labels_as_tags	Set of labels (ID elements) to include as tags in the tags output. Default is to include all labels. Tags with empty values will not be included in the tags output. Set to [] to suppress all generated tags. Notes: The value of the name tag, if included, will be the id, not the name. Unlike other null-label inputs, the initial setting of labels_as_tags cannot be changed in later chained modules. Attempts to change it will be silently ignored.	set(string)	[ "default" ]	no
name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a tag. The "name" tag is set to the full id string. There is no tag with the value of the name input.	string	null	no
namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	string	null	no
organization_management_account_name	The name of the AWS Organization management account	string	null	no
organizations_delegated_administrator_enabled	Flag to enable the Organization delegated administrator	bool	n/a	yes
regex_replace_chars	Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.	string	null	no
region	AWS Region	string	n/a	yes
root_account_stage	The stage name for the Organization root (management) account. This is used to lookup account IDs from account names using the account-map component.	string	"root"	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	string	null	no
tags	Additional tags (e.g. {'BusinessUnit': 'XYZ'}). Neither the tag keys nor the tag values will be modified by this module.	map(string)	{}	no
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	string	null	no
unused_access_age	The specified access age in days for which to generate findings for unused access	number	30	no

Outputs

Name	Description
aws_organizations_delegated_administrator_id	AWS Organizations Delegated Administrator ID
aws_organizations_delegated_administrator_status	AWS Organizations Delegated Administrator status
organization_accessanalyzer_id	Organization Access Analyzer ID
organization_unused_access_accessanalyzer_id	Organization unused access Access Analyzer ID

References

• https://aws.amazon.com/iam/access-analyzer/
• https://docs.aws.amazon.com/IAM/latest/UserGuide/what-is-access-analyzer.html
• https://repost.aws/knowledge-center/iam-access-analyzer-organization
• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/accessanalyzer_analyzer
• hashicorp/terraform-provider-aws#19312
• hashicorp/terraform-provider-aws#19389
• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/organizations_delegated_administrator

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