Vulnerability-Lookup

CNVD-2017-21024

Vulnerability from cnvd - Published: 2017-08-15

Title

NTP 'ntp-keygen.c'可预测随机数生成漏洞

Description

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中存在可预测随机数生成漏洞。攻击者可利用该漏洞猜测出MD5密钥，欺骗客户端或服务器。

Severity

中

Patch Name

NTP 'ntp-keygen.c'可预测随机数生成漏洞的补丁

Patch Description

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中存在可预测随机数生成漏洞。攻击者可利用该漏洞猜测出MD5密钥，欺骗客户端或服务器。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://bugs.ntp.org/show_bug.cgi?id=2797

Reference

http://www.securityfocus.com/bid/74045

Impacted products

Name
Ntp Ntp

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "74045"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-3405",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3405"
    }
  },
  "description": "NTP\uff08Network Time Protocol\uff0c\u7f51\u7edc\u65f6\u95f4\u534f\u8bae\uff09\u662f\u4e00\u6b3e\u901a\u8fc7\u7f51\u7edc\u540c\u6b65\u8ba1\u7b97\u673a\u65f6\u949f\u7684\u534f\u8bae\u3002\r\n\r\nNTP\u4e2d\u5b58\u5728\u53ef\u9884\u6d4b\u968f\u673a\u6570\u751f\u6210\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u731c\u6d4b\u51faMD5\u5bc6\u94a5\uff0c\u6b3a\u9a97\u5ba2\u6237\u7aef\u6216\u670d\u52a1\u5668\u3002",
  "discovererName": "Martin Prpic",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://bugs.ntp.org/show_bug.cgi?id=2797",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-21024",
  "openTime": "2017-08-15",
  "patchDescription": "NTP\uff08Network Time Protocol\uff0c\u7f51\u7edc\u65f6\u95f4\u534f\u8bae\uff09\u662f\u4e00\u6b3e\u901a\u8fc7\u7f51\u7edc\u540c\u6b65\u8ba1\u7b97\u673a\u65f6\u949f\u7684\u534f\u8bae\u3002\r\n\r\nNTP\u4e2d\u5b58\u5728\u53ef\u9884\u6d4b\u968f\u673a\u6570\u751f\u6210\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u731c\u6d4b\u51faMD5\u5bc6\u94a5\uff0c\u6b3a\u9a97\u5ba2\u6237\u7aef\u6216\u670d\u52a1\u5668\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": "NTP \u0027ntp-keygen.c\u0027\u53ef\u9884\u6d4b\u968f\u673a\u6570\u751f\u6210\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Ntp Ntp"
  },
  "referenceLink": "http://www.securityfocus.com/bid/74045",
  "serverity": "\u4e2d",
  "submitTime": "2017-08-11",
  "title": "NTP \u0027ntp-keygen.c\u0027\u53ef\u9884\u6d4b\u968f\u673a\u6570\u751f\u6210\u6f0f\u6d1e"
}

CVE-2015-3405 (GCVE-0-2015-3405)

Vulnerability from cvelistv5 – Published: 2017-08-09 16:00 – Updated: 2024-08-06 05:47

Summary

ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

Severity

No CVSS data available.

CWE

Assigner

redhat redhat root

References

14 references

URL	Tags
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://rhn.redhat.com/errata/RHSA-2015-2231.html	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=1210324	x_refsource_CONFIRM
http://www.oracle.com/technetwork/topics/security…	x_refsource_CONFIRM
http://www.debian.org/security/2015/dsa-3388	vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/74045	vdb-entryx_refsource_BID
http://www.oracle.com/technetwork/topics/security…	x_refsource_CONFIRM
https://bugs.ntp.org/show_bug.cgi?id=2797	x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2015-1459.html	vendor-advisoryx_refsource_REDHAT
https://support.hpe.com/hpsc/doc/public/display?d…	x_refsource_CONFIRM
http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=551…	x_refsource_CONFIRM
http://www.debian.org/security/2015/dsa-3223	vendor-advisoryx_refsource_DEBIAN
http://www.openwall.com/lists/oss-security/2015/0…	mailing-listx_refsource_MLIST

Date Public

2015-03-30 00:00

Show details on NVD website

JSON

To clipboard

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    "dateUpdated": "2024-08-06T05:47:57.539Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

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.

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.

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Action not permitted

CNVD-2017-21024

CVE-2015-3405 (GCVE-0-2015-3405)

Tags

Sightings

Nomenclature

Related by attack behaviour