CVE:CVE-2018-7184
CNNVD:CNNVD-201803-142
NTP（Network Time Protocol，网络时间协议）是一种以数据包交换把两台电脑的时钟同步化的网络协议。ntpd是其中的一个操作系统守护进程。
NTP 4.2.8p11之前的4.2.8p4版本中的ntpd存在安全漏洞。远程攻击者可利用该漏洞造成拒绝服务（中断）。
solution:Upgrade ntp ntp to a higher version than 4.2.8:p10,4.2.8:p4,4.2.8:p5,4.2.8:p6,4.2.8:p7,4.2.8:p8,4.2.8:p9,and avoid the version 4.2.8:p10,4.2.8:p4,4.2.8:p5,4.2.8:p6,4.2.8:p7,4.2.8:p8,4.2.8:p9; Upgrade synology diskstation_manager to a higher version than 5.2,6.0,6.1,and avoid the version 5.2,6.0,6.1; Upgrade synology router_manager to a higher version than 1.1,and avoid the version 1.1; Upgrade synology skynas to a higher version than -; Upgrade synology virtual_diskstation_manager to a higher version than -; Upgrade synology vs960hd_firmware to a higher version than -; Upgrade slackware slackware_linux to a higher version than 14.0,14.1,14.2,and avoid the version 14.0,14.1,14.2; Upgrade canonical ubuntu_linux to a higher version than 14.04,16.04,17.10,18.04,and avoid the version 14.04,16.04,17.10,18.04; Upgrade netapp cloud_backup to a higher version than -; Upgrade netapp steelstore_cloud_integrated_storage to a higher version than -