1-sat2-member-roles.yaml

AWSTemplateFormatVersion: 2010-09-09
Description: This template deploys the roles needed for Prowler to run in each account.
Parameters:
  ProwlerAccountID:
    Description: 'Specifies the account ID where Prowler will run from.'
    Type: String
    Default: '012345678910'
    AllowedPattern: \d{12}
    ConstraintDescription: Enter the 12 digit account ID with no spaces.

Resources:
  ProwlerIntegrationCodeBuildRole:
    Metadata:
      cfn_nag:
        rules_to_suppress:
          - id: W11
            reason: Role allows * in resource policy. The role needs broad, read-only privileges to review all resources. Only the CodeBuild role created as part of this solution can assume this role.
          - id: W28
            reason: Resource has an explicit name so Prowler can loop through and assume it in each account.
          - id: W76
            reason: SPCM for IAM policy is higher than 25 due to managed polices, and additional polices. Each section of the role has a comment with the Prowler documentation describing the need for the privileges. 
    Type: 'AWS::IAM::Role'
    Properties:
      Path: '/service-role/'
      RoleName: ProwlerMemberRole
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              AWS: !Sub 'arn:${AWS::Partition}:iam::${ProwlerAccountID}:root' 
            Action:
              - 'sts:AssumeRole'
            Condition:
              ArnEquals:
                aws:PrincipalArn: !Sub arn:${AWS::Partition}:iam::${ProwlerAccountID}:role/service-role/ProwlerCodeBuildRole
      ManagedPolicyArns:
      # Prowler requires these managed polices to perform all the checks
      # https://docs.prowler.cloud/en/latest/getting-started/requirements/
        - !Sub 'arn:${AWS::Partition}:iam::aws:policy/SecurityAudit'
        - !Sub 'arn:${AWS::Partition}:iam::aws:policy/job-function/ViewOnlyAccess'
      Policies:
      # Prowler requires these additional read-only permissions. They are documented in the Prowler documentation.
      # https://github.com/prowler-cloud/prowler/blob/master/permissions/prowler-additions-policy.json
        - PolicyName: ProwlerAdditions
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Action:
                - account:Get*
                - appstream:Describe*
                - appstream:List*
                - backup:List*
                - cloudtrail:GetInsightSelectors
                - codeartifact:List*
                - codebuild:BatchGet*
                - drs:Describe*
                - ds:Get*
                - ds:Describe*
                - ds:List*
                - ec2:GetEbsEncryptionByDefault
                - ecr:Describe*
                - ecr:GetRegistryScanningConfiguration
                - elasticfilesystem:DescribeBackupPolicy
                - glue:GetConnections
                - glue:GetSecurityConfiguration*
                - glue:SearchTables
                - lambda:GetFunction*
                - logs:FilterLogEvents
                - macie2:GetMacieSession
                - s3:GetAccountPublicAccessBlock
                - shield:DescribeProtection
                - shield:GetSubscriptionState
                - securityhub:BatchImportFindings
                - securityhub:GetFindings
                - ssm:GetDocument
                - ssm-incidents:List*
                - support:Describe*
                - tag:GetTagKeys
                - wellarchitected:List*
                Effect: Allow
                Resource: '*'
              - Action:
                - apigateway:GET
                Effect: Allow
                Resource:
                - !Sub arn:${AWS::Partition}:apigateway:*::/restapis/*
                - !Sub arn:${AWS::Partition}:apigateway:*::/apis/*