A privilege escalation flaw was found in the Ansible Tower. When Tower before 3.0.3 deploys a PostgreSQL database, it incorrectly configures the trust level of postgres user. An attacker could use this vulnerability to gain admin level access to the database.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-7950
https://docs.ansible.com/ansible-tower/3.0.3/html/upgrade-migration-guide/release_notes.html