Vulnerability-Lookup

CNVD-2016-11423

Vulnerability from cnvd - Published: 2016-11-23

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

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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JSON

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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"
}

CVE-2016-7427 (GCVE-0-2016-7427)

Vulnerability from cvelistv5 – Published: 2017-01-13 16:00 – Updated: 2024-08-06 01:57

Summary

The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

12 references

URL	Tags
https://h20566.www2.hpe.com/hpsc/doc/public/displ…	x_refsource_CONFIRM
https://usn.ubuntu.com/3707-2/	vendor-advisoryx_refsource_UBUNTU
https://support.hpe.com/hpsc/doc/public/display?d…	x_refsource_CONFIRM
http://support.ntp.org/bin/view/Main/SecurityNoti…	x_refsource_CONFIRM
http://nwtime.org/ntp428p9_release/	x_refsource_CONFIRM
http://support.ntp.org/bin/view/Main/NtpBug3114	x_refsource_CONFIRM
https://www.kb.cert.org/vuls/id/633847	third-party-advisoryx_refsource_CERT-VN
https://support.hpe.com/hpsc/doc/public/display?d…	x_refsource_CONFIRM
http://www.securitytracker.com/id/1037354	vdb-entryx_refsource_SECTRACK
https://bto.bluecoat.com/security-advisory/sa139	x_refsource_CONFIRM
https://security.FreeBSD.org/advisories/FreeBSD-S…	vendor-advisoryx_refsource_FREEBSD
http://www.securityfocus.com/bid/94447	vdb-entryx_refsource_BID

Date Public

2016-11-21 00:00

Show details on NVD website

JSON

To clipboard

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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.