cnvd - cnvd-2020-66573

cnvd-2020-66573

Vulnerability from cnvd

Title: Libsvm拒绝服务漏洞

Description:

Libsvm是一款用于SVM分类和回归的简单、易用且高效的软件。

Libsvm 324版中的svm.cpp中的svm_predict_values存在拒绝服务漏洞。攻击者可通过特制模型SVM利用该漏洞导致拒绝服务（分段错误）。

Severity: 低

Formal description:

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://github.com/cjlin1/libsvm

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-28975

Impacted products

Name
Libsvm Libsvm v324

Show details on source website

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-28975",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-28975"
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  },
  "description": "Libsvm\u662f\u4e00\u6b3e\u7528\u4e8eSVM\u5206\u7c7b\u548c\u56de\u5f52\u7684\u7b80\u5355\u3001\u6613\u7528\u4e14\u9ad8\u6548\u7684\u8f6f\u4ef6\u3002\n\nLibsvm 324\u7248\u4e2d\u7684svm.cpp\u4e2d\u7684svm_predict_values\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u6a21\u578bSVM\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u5206\u6bb5\u9519\u8bef\uff09\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://github.com/cjlin1/libsvm",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-66573",
  "openTime": "2020-11-26",
  "products": {
    "product": "Libsvm Libsvm v324"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-28975",
  "serverity": "\u4f4e",
  "submitTime": "2020-11-23",
  "title": "Libsvm\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2020-28975 (GCVE-0-2020-28975)

Vulnerability from cvelistv5

Published

2020-11-21 00:00

Modified

2024-08-04 16:48

Severity ?

CWE

Summary

svm_predict_values in svm.cpp in Libsvm v324, as used in scikit-learn 0.23.2 and other products, allows attackers to cause a denial of service (segmentation fault) via a crafted model SVM (introduced via pickle, json, or any other model permanence standard) with a large value in the _n_support array. NOTE: the scikit-learn vendor's position is that the behavior can only occur if the library's API is violated by an application that changes a private attribute.

References

▼	URL	Tags
	https://github.com/scikit-learn/scikit-learn/issues/18891
	https://github.com/cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp#L2501
	http://seclists.org/fulldisclosure/2020/Nov/44	mailing-list
	http://packetstormsecurity.com/files/160281/SciKit-Learn-0.23.2-Denial-Of-Service.html
	https://github.com/scikit-learn/scikit-learn/commit/1bf13d567d3cd74854aa8343fd25b61dd768bb85
	https://security.gentoo.org/glsa/202301-03	vendor-advisory

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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