- fix buffer overflow in parsing of address in ntpq and ntpdc (CVE-2018-12327)

- fix buffer overflow in datum refclock driver (CVE-2017-6462)
- fix crash with invalid unpeer command (CVE-2017-6463)
- fix potential crash with invalid server command (CVE-2017-6464)

- don't limit rate of packets from sources (CVE-2016-7426)
- don't change interface from received packets (CVE-2016-7429)
- fix calculation of root distance again (CVE-2016-7433)
- require authentication for trap commands (CVE-2016-9310)
- fix crash when reporting peer event to trappers (CVE-2016-9311)

- don't allow spoofed packets to demobilize associations (CVE-2015-7979,
  CVE-2016-1547)
- don't allow spoofed packet to enable symmetric interleaved mode
  (CVE-2016-1548)
- check mode of new source in config command (CVE-2016-2518)
- make MAC check resilient against timing attack (CVE-2016-1550)

- don't accept server/peer packets with zero origin timestamp (CVE-2015-8138)
- fix crash with reslist command (CVE-2015-7977, CVE-2015-7978)

- don't accept server/peer packets with zero origin timestamp (CVE-2015-8138)

- check origin timestamp before accepting KoD RATE packet (CVE-2015-7704)
- allow only one step larger than panic threshold with -g (CVE-2015-5300)

- reject packets without MAC when authentication is enabled (CVE-2015-1798)
- protect symmetric associations with symmetric key against DoS attack
  (CVE-2015-1799)
- fix generation of MD5 keys with ntp-keygen on big-endian systems
  (CVE-2015-3405)
- log when stepping clock for leap second or ignoring it with -x (#1204625)

- don't generate weak control key for resolver (CVE-2014-9293)
- don't generate weak MD5 keys in ntp-keygen (CVE-2014-9294)
- fix buffer overflows via specially-crafted packets (CVE-2014-9295)
- don't mobilize passive association when authentication fails (CVE-2014-9296)