FreeBSD: VID-3c0237f5-420e-11e7-82c5-14dae9d210b8 (CVE-2017-6464): FreeBSD -- Multiple vulnerabilities of ntp

Problem Description: A vulnerability was discovered in the NTP server's parsing of configuration directives. [CVE-2017-6464] A vulnerability was found in NTP, in the parsing of packets from the DPTS Clock. [CVE-2017-6462] A vulnerability was discovered in the NTP server's parsing of configuration directives. [CVE-2017-6463] A vulnerability was found in NTP, affecting the origin timestamp check function. [CVE-2016-9042] Impact: A remote, authenticated attacker could cause ntpd to crash by sending a crafted message. [CVE-2017-6463, CVE-2017-6464] A malicious device could send crafted messages, causing ntpd to crash. [CVE-2017-6462] An attacker able to spoof messages from all of the configured peers could send crafted packets to ntpd, causing later replies from those peers to be discarded, resulting in denial of service. [CVE-2016-9042]