dtc -- multiple vulnerabilities

Ansgar Burchardt reports:

Ansgar Burchardt discovered several vulnerabilities in DTC, a
web control panel for admin and accounting hosting services:
The bw_per_moth.php graph contains an SQL injection
vulnerability; insufficient checks in bw_per_month.php can lead
to bandwidth usage information disclosure; after a registration,
passwords are sent in cleartext email messages and Authenticated
users could delete accounts using an obsolete interface which
was incorrectly included in the package.