Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
NTP ntpd 代码注入漏洞
Vulnerability Description
ntpd（Network Time Protocol daemon）是一个操作系统守护进程，它使用网络时间协议（NTP）与时间服务器的系统时间保持同步。 NTP 4.2.7p444及之前版本的ntpd中的ntp_proto.c文件中的‘receive’函数的symmetric-key功能存在安全漏洞，该漏洞源于程序收到特定的无效数据包时会执行state-variable更新。攻击者可通过伪造对等节点（peer）的资源IP地址利用该漏洞实施中间人攻击，造成拒绝服务（主机不能同步）。
CVSS Information
N/A
Vulnerability Type
N/A