CVE:CVE-2016-9042
CNNVD:CNNVD-201703-1068
NTP（Network Time Protocol，网络时间协议）是一款通过网络同步计算机时钟的协议。
NTP 4.2.8p9版本中的origin timestamp检测功能存在安全漏洞。攻击者可借助以认证的特制网络数据包利用该漏洞造成拒绝服务。
solution:Upgrade ntp ntp to a higher version than 4.2.8:p9,and avoid the version 4.2.8:p9; Upgrade freebsd freebsd to a higher version than 10.0,11.0,and avoid the version 10.0,11.0; Upgrade hpe hpux-ntp to a higher version than c.4.2.8.4.0,and avoid the version (,c.4.2.8.4.0); Upgrade siemens simatic_net_cp_443-1_opc_ua_firmware to a higher version than *