cnvd-2016-02669
Vulnerability from cnvd

Title: ntpd拒绝服务漏洞（CNVD-2016-02669）

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。

ntpd 4.2.8p7之前4.x版本和4.3.92之前4.3版本中存在安全漏洞。攻击者可通过发送特制的数据包，创建‘hmode’值大于7的对等体利用该漏洞触发MATCH_ASSOC()查询，造成拒绝服务（越边界引用）。

Severity: 中

Patch Name: ntpd拒绝服务漏洞（CNVD-2016-02669）的补丁

Patch 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。

ntpd 4.2.8p7之前4.x版本和4.3.92之前4.3版本中存在安全漏洞。攻击者可通过发送特制的数据包，创建‘hmode’值大于7的对等体利用该漏洞触发MATCH_ASSOC()查询，造成拒绝服务（越边界引用）。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:

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://support.ntp.org/bin/view/Main/NtpBug3009

Reference: http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security http://support.ntp.org/bin/view/Main/NtpBug3009 http://www.kb.cert.org/vuls/id/718152

Impacted products
Name
['Ntp NTPd 4.x<4.2.8p7', 'Ntp NTPd >4.3，<4.3.92']
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-2518"
    }
  },
  "description": "ntpd\uff08Network Time Protocol daemon\uff09\u662f\u4e00\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u5b88\u62a4\u8fdb\u7a0b\uff0c\u5b83\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\u3002\r\n\r\nntpd 4.2.8p7\u4e4b\u524d4.x\u7248\u672c\u548c4.3.92\u4e4b\u524d4.3\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236\u7684\u6570\u636e\u5305\uff0c\u521b\u5efa\u2018hmode\u2019\u503c\u5927\u4e8e7\u7684\u5bf9\u7b49\u4f53\u5229\u7528\u8be5\u6f0f\u6d1e\u89e6\u53d1MATCH_ASSOC()\u67e5\u8be2\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d8a\u8fb9\u754c\u5f15\u7528\uff09\u3002",
  "discovererName": "Cisco TALOS",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://support.ntp.org/bin/view/Main/NtpBug3009",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-02669",
  "openTime": "2016-05-03",
  "patchDescription": "ntpd\uff08Network Time Protocol daemon\uff09\u662f\u4e00\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u5b88\u62a4\u8fdb\u7a0b\uff0c\u5b83\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\u3002\r\n\r\nntpd 4.2.8p7\u4e4b\u524d4.x\u7248\u672c\u548c4.3.92\u4e4b\u524d4.3\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236\u7684\u6570\u636e\u5305\uff0c\u521b\u5efa\u2018hmode\u2019\u503c\u5927\u4e8e7\u7684\u5bf9\u7b49\u4f53\u5229\u7528\u8be5\u6f0f\u6d1e\u89e6\u53d1MATCH_ASSOC()\u67e5\u8be2\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d8a\u8fb9\u754c\u5f15\u7528\uff09\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-02669\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Ntp NTPd 4.x\u003c4.2.8p7",
      "Ntp NTPd \u003e4.3\uff0c\u003c4.3.92"
    ]
  },
  "referenceLink": "http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security\r\nhttp://support.ntp.org/bin/view/Main/NtpBug3009\r\nhttp://www.kb.cert.org/vuls/id/718152",
  "serverity": "\u4e2d",
  "submitTime": "2016-04-28",
  "title": "ntpd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-02669\uff09"
}


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