Log Message:
ntp4: update to ntp-4.2.8p13

NTP 4.2.8p13 2019-03-07
This release fixes a bug that allows an attacker with access to an
explicitly trusted source to send a crafted malicious mode 6 (ntpq)
packet that can trigger a NULL pointer dereference, crashing ntpd.
It also provides 17 other bugfixes and 1 other improvement.

NTP 4.2.8p12 2018-04-09
This release fixes a "hole" in the noepeer capability introduced to ntpd
in ntp-4.2.8p11, and a buffer overflow in the openhost() function used by
ntpq and ntpdc.  It also provides 26 other bugfixes, and 4 other improvements.

NTP 4.2.8p11 2018-02-27
This release fixes 2 low-/medium-, 1 informational/medum-, and 2 low-severity
vulnerabilities in ntpd, one medium-severity vulernability in ntpq, and
provides 65 other non-security fixes and improvements.