cnvd-2016-11423
Vulnerability from cnvd

Title: ntpd广播模式重放防御拒绝服务漏洞

Description:

Network Time Protocol（NTP）是用于使计算机时间同步化的一种协议，可使计算机对其服务器或时钟源（如石英钟，GPS等等)做同步化。把计算机的时钟同步到世界协调时，以确保网络中的数据交互能够顺利进行。NTPD（Network Time Protocol daemon）是一个操作系统守护进程，使用网络时间协议（NTP）与时间服务器的系统时间保持同步，主要用于主机与主机之间的时间同步。

ntpd存在广播模式重放防御拒绝服务漏洞。允许攻击者利用漏洞访问NTP广播域，周期性地向广播域中发送精心构造的数据包，从而迫使nptd从合法的NTP广播服务器发来广播模式数据包。

Severity: 低

Patch Name: ntpd广播模式重放防御拒绝服务漏洞的补丁

Patch Description:

Network Time Protocol（NTP）是用于使计算机时间同步化的一种协议，可使计算机对其服务器或时钟源（如石英钟，GPS等等)做同步化。把计算机的时钟同步到世界协调时，以确保网络中的数据交互能够顺利进行。NTPD（Network Time Protocol daemon）是一个操作系统守护进程，使用网络时间协议（NTP）与时间服务器的系统时间保持同步，主要用于主机与主机之间的时间同步。

ntpd存在广播模式重放防御拒绝服务漏洞。允许攻击者利用漏洞访问NTP广播域，周期性地向广播域中发送精心构造的数据包，从而迫使nptd从合法的NTP广播服务器发来广播模式数据包。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

官方已经发布了版本更新，建议用户升级到最新版本，下载链接如下： http://support.ntp.org/bin/view/Main/SoftwareDownloads

Reference: http://nwtime.org/ntp428p9_release/

Impacted products
Name
['Ntp NTPd >=ntp-4.2.8p6，<ntp-4.2.8p9', 'Ntp NTPd >=ntp-4.3.0，<ntp-4.3.94']
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{
  "bids": {
    "bid": {
      "bidNumber": "94447"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-7427"
    }
  },
  "description": "Network Time Protocol\uff08NTP\uff09\u662f\u7528\u4e8e\u4f7f\u8ba1\u7b97\u673a\u65f6\u95f4\u540c\u6b65\u5316\u7684\u4e00\u79cd\u534f\u8bae\uff0c\u53ef\u4f7f\u8ba1\u7b97\u673a\u5bf9\u5176\u670d\u52a1\u5668\u6216\u65f6\u949f\u6e90\uff08\u5982\u77f3\u82f1\u949f\uff0cGPS\u7b49\u7b49)\u505a\u540c\u6b65\u5316\u3002\u628a\u8ba1\u7b97\u673a\u7684\u65f6\u949f\u540c\u6b65\u5230\u4e16\u754c\u534f\u8c03\u65f6\uff0c\u4ee5\u786e\u4fdd\u7f51\u7edc\u4e2d\u7684\u6570\u636e\u4ea4\u4e92\u80fd\u591f\u987a\u5229\u8fdb\u884c\u3002NTPD\uff08Network Time Protocol daemon\uff09\u662f\u4e00\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u5b88\u62a4\u8fdb\u7a0b\uff0c\u4f7f\u7528\u7f51\u7edc\u65f6\u95f4\u534f\u8bae\uff08NTP\uff09\u4e0e\u65f6\u95f4\u670d\u52a1\u5668\u7684\u7cfb\u7edf\u65f6\u95f4\u4fdd\u6301\u540c\u6b65\uff0c\u4e3b\u8981\u7528\u4e8e\u4e3b\u673a\u4e0e\u4e3b\u673a\u4e4b\u95f4\u7684\u65f6\u95f4\u540c\u6b65\u3002\r\n\r\nntpd\u5b58\u5728\u5e7f\u64ad\u6a21\u5f0f\u91cd\u653e\u9632\u5fa1\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u5141\u8bb8\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u8bbf\u95eeNTP\u5e7f\u64ad\u57df\uff0c\u5468\u671f\u6027\u5730\u5411\u5e7f\u64ad\u57df\u4e2d\u53d1\u9001\u7cbe\u5fc3\u6784\u9020\u7684\u6570\u636e\u5305\uff0c\u4ece\u800c\u8feb\u4f7fnptd\u4ece\u5408\u6cd5\u7684NTP\u5e7f\u64ad\u670d\u52a1\u5668\u53d1\u6765\u5e7f\u64ad\u6a21\u5f0f\u6570\u636e\u5305\u3002",
  "discovererName": "Matthew Van Gundy of Cisco ASIG",
  "formalWay": "\u5b98\u65b9\u5df2\u7ecf\u53d1\u5e03\u4e86\u7248\u672c\u66f4\u65b0\uff0c\u5efa\u8bae\u7528\u6237\u5347\u7ea7\u5230\u6700\u65b0\u7248\u672c\uff0c\u4e0b\u8f7d\u94fe\u63a5\u5982\u4e0b\uff1a\r\nhttp://support.ntp.org/bin/view/Main/SoftwareDownloads",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-11423",
  "openTime": "2016-11-23",
  "patchDescription": "Network Time Protocol\uff08NTP\uff09\u662f\u7528\u4e8e\u4f7f\u8ba1\u7b97\u673a\u65f6\u95f4\u540c\u6b65\u5316\u7684\u4e00\u79cd\u534f\u8bae\uff0c\u53ef\u4f7f\u8ba1\u7b97\u673a\u5bf9\u5176\u670d\u52a1\u5668\u6216\u65f6\u949f\u6e90\uff08\u5982\u77f3\u82f1\u949f\uff0cGPS\u7b49\u7b49)\u505a\u540c\u6b65\u5316\u3002\u628a\u8ba1\u7b97\u673a\u7684\u65f6\u949f\u540c\u6b65\u5230\u4e16\u754c\u534f\u8c03\u65f6\uff0c\u4ee5\u786e\u4fdd\u7f51\u7edc\u4e2d\u7684\u6570\u636e\u4ea4\u4e92\u80fd\u591f\u987a\u5229\u8fdb\u884c\u3002NTPD\uff08Network Time Protocol daemon\uff09\u662f\u4e00\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u5b88\u62a4\u8fdb\u7a0b\uff0c\u4f7f\u7528\u7f51\u7edc\u65f6\u95f4\u534f\u8bae\uff08NTP\uff09\u4e0e\u65f6\u95f4\u670d\u52a1\u5668\u7684\u7cfb\u7edf\u65f6\u95f4\u4fdd\u6301\u540c\u6b65\uff0c\u4e3b\u8981\u7528\u4e8e\u4e3b\u673a\u4e0e\u4e3b\u673a\u4e4b\u95f4\u7684\u65f6\u95f4\u540c\u6b65\u3002\r\n\r\nntpd\u5b58\u5728\u5e7f\u64ad\u6a21\u5f0f\u91cd\u653e\u9632\u5fa1\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u5141\u8bb8\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u8bbf\u95eeNTP\u5e7f\u64ad\u57df\uff0c\u5468\u671f\u6027\u5730\u5411\u5e7f\u64ad\u57df\u4e2d\u53d1\u9001\u7cbe\u5fc3\u6784\u9020\u7684\u6570\u636e\u5305\uff0c\u4ece\u800c\u8feb\u4f7fnptd\u4ece\u5408\u6cd5\u7684NTP\u5e7f\u64ad\u670d\u52a1\u5668\u53d1\u6765\u5e7f\u64ad\u6a21\u5f0f\u6570\u636e\u5305\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "ntpd\u5e7f\u64ad\u6a21\u5f0f\u91cd\u653e\u9632\u5fa1\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Ntp NTPd \u003e=ntp-4.2.8p6\uff0c\u003cntp-4.2.8p9",
      "Ntp NTPd \u003e=ntp-4.3.0\uff0c\u003cntp-4.3.94"
    ]
  },
  "referenceLink": "http://nwtime.org/ntp428p9_release/",
  "serverity": "\u4f4e",
  "submitTime": "2016-11-23",
  "title": "ntpd\u5e7f\u64ad\u6a21\u5f0f\u91cd\u653e\u9632\u5fa1\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}


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