CVE-2016-1550
An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.
Date published : 2017-01-06
http://www.securityfocus.com/bid/88261
http://www.securityfocus.com/archive/1/538233/100/0/threaded