Query: ec2_instance_no_iam_role_with_database_management_write_access

with iam_roles as (
  select
    r.arn as role_arn,
    i.arn as intance_arn
  from
    aws_iam_role as r,
    jsonb_array_elements_text(instance_profile_arns) as p
    left join aws_ec2_instance as i on p = i.iam_instance_profile_arn
  where
    i.arn is not null
), iam_role_with_permission as (
  select
    arn
  from
    aws_iam_role,
    jsonb_array_elements(assume_role_policy_std -> 'Statement') as s,
    jsonb_array_elements_text(s -> 'Principal' -> 'Service') as service,
    jsonb_array_elements_text(s -> 'Action') as action
  where
    arn in (select role_arn from iam_roles)
    and  s ->> 'Effect' = 'Allow'
    and service = 'ec2.amazonaws.com'
    and (
      (action in ('rds:modifydbcluster','rds:modifydbclusterendpoint','rds:modifydbinstance','rds:modifydbsnapshot','rds:modifyglobalcluster','dynamodb:updateitem','dynamodb:updatetable','memorydb:updatecluster','neptune-db:resetdatabase','neptune-db:writedataviaquery','docdb-elastic:updatecluster','elasticache:modifycachecluster','cassandra:alter','cassandra:modify','qldb:executestatement','qldb:partiqlupdate','qldb:sendcommand','qldb:updateledger','redshift:modifycluster','redshift:modifyclustersnapshot','redshift:modifyendpointaccess','timestream:updatedatabase','timestream:updatetable','timestream:writerecords','*:*')
      )
    )
)
select
  i.arn as resource,
  case
    when p.arn is null then 'ok'
    else 'alarm'
  end status,
  case
    when p.arn is null then title || ' has no database management write level access.'
    else title || ' has database management write level access.'
  end as reason
  
  , i.account_id
from
  aws_ec2_instance as i
  left join iam_roles as r on r.intance_arn = i.arn
  left join iam_role_with_permission as p on p.arn = r.role_arn;