An IAM User is an entity that you create in AWS. The IAM User represents the person or service that uses the IAM User to interact with AWS. The user {AwsUser} was found with permissive permissions that allows the user the ability to pass a role to a service. By passing a role to a service, a user may grant that service the ability to interact with the AWS API with the permissions of that role. By allowing a user to pass any role, an attacker may pass a role with administrative privileges to a service they control, such as an EC2 Instance or Lambda Function, and act through this service with escalated permissions.