The host is installed with Python 2.7.0 before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 and is prone to a StartTLS stripping attack vulnerability. A flaw is present in the application, which does not return an error when StartTLS fails. Successful exploitation could allow attackers to bypass the TLS protections by leveraging a network position between the client and the registry.