BUG #13842: deb-Package configuration hangs at password promt

The following bug has been logged on the website:

Bug reference:      13842
Logged by:          Jonas Hagen
Email address:      jonas.hagen3@gmail.com
PostgreSQL version: 9.4.5
Operating system:   Ubuntu
Description:

See also:
https://bugs.launchpad.net/ubuntu/+source/postgresql-common/+bug/1528822

The configuration of postresql-common hangs after "Password:" promt. The
password can be entered, but is visible and after hitting enter, nothing
happens. Can be aborted by Ctrl+C. System: Ubuntu 15.10

  $ sudo dpkg --configure -a
  Setting up postgresql-common (169git1) ...
  Password: hallo
  ^CPassword change aborted.
  dpkg: error processing package postgresql-common (--configure):
   subprocess installed post-installation script was interrupted
  dpkg: dependency problems prevent configuration of postgresql-9.4:
   postgresql-9.4 depends on postgresql-common (>= 142~); however:
    Package postgresql-common is not configured yet.