IPPUSBXD before 1.22 listens on all interfaces, which allows remote attackers to obtain access to USB connected printers via a direct request.
https://github.com/tillkamppeter/ippusbxd/commit/46844402bca7a38fc224483ba6f0a93c4613203f
https://bugs.launchpad.net/ubuntu/+source/ippusbxd/+bug/1455644
http://www.ubuntu.com/usn/USN-2725-1