CVE:CVE-2015-7702
CNNVD:CNNVD-201510-589
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 4.2.8p4之前版本和4.3.77之前4.3.x版本中存在安全漏洞，该漏洞源于程序没有正确检查数据包长度。攻击者可利用该漏洞造成拒绝服务（ntpd崩溃）。（注：该漏洞源于CNNVD-201510-026补丁的不完全修复）
solution:Upgrade ntp ntp to a higher version than 4.2.8,4.3.77,4.2.8,4.2.8:p1,4.2.8:p1-beta1,4.2.8:p1-beta2,4.2.8:p1-beta3,4.2.8:p1-beta4,4.2.8:p1-beta5,4.2.8:p1-rc1,4.2.8:p1-rc2,4.2.8:p2,4.2.8:p2-rc1,4.2.8:p2-rc2,4.2.8:p2-rc3,4.2.8:p3,4.2.8:p3-rc1,4.2.8:p3-rc2,4.2.8:p3-rc3,and avoid the version [4.2.0,4.2.8),[4.3.0,4.3.77),4.2.8,4.2.8:p1,4.2.8:p1-beta1,4.2.8:p1-beta2,4.2.8:p1-beta3,4.2.8:p1-beta4,4.2.8:p1-beta5,4.2.8:p1-rc1,4.2.8:p1-rc2,4.2.8:p2,4.2.8:p2-rc1,4.2.8:p2-rc2,4.2.8:p2-rc3,4.2.8:p3,4.2.8:p3-rc1,4.2.8:p3-rc2,4.2.8:p3-rc3; Upgrade oracle linux to a higher version than 6,and avoid the version 6; Upgrade debian debian_linux to a higher version than 7.0,8.0,9.0,and avoid the version 7.0,8.0,9.0; Upgrade netapp oncommand_performance_manager to a higher version than -; Upgrade netapp oncommand_unified_manager to a higher version than -; Upgrade netapp clustered_data_ontap to a higher version than -; Upgrade netapp data_ontap to a higher version than -; Upgrade redhat enterprise_linux_desktop to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_server to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_server_aus to a higher version than 7.3,7.4,7.6,7.7,and avoid the version 7.3,7.4,7.6,7.7; Upgrade redhat enterprise_linux_server_eus to a higher version than 7.3,7.4,7.5,7.6,7.7,and avoid the version 7.3,7.4,7.5,7.6,7.7; Upgrade redhat enterprise_linux_server_tus to a higher version than 7.3,7.6,7.7,and avoid the version 7.3,7.6,7.7; Upgrade redhat enterprise_linux_workstation to a higher version than 6.0,7.0,and avoid the version 6.0,7.0