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Date: Thu, 26 Nov 2020 23:01:14 +0100
From: pabloec20 <pabloec20@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] scikit-learn 0.23.2 Local Denial of Service

[Description]

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 technique) with a large value in the
_n_support array.


[CVE ID]

CVE-2020-28975


[Vendor of Product]

 SciKit-Learn

[Affected Product Code Base]

 scikit-learn - 0.23.2

[Affected Component]

 LibSVM

[Attack Type]

 Local

[Impact]

  Denial of Service

[Attack Vectors]

 specially crafted file

[Reference]

 https://github.com/scikit-learn/scikit-learn/issues/18891
<https://github.com/scikit-learn/scikit-learn/issues/18891>


https://github.com/cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp#L2501
<https://github.com/cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp#L2501>

[Discoverer]

 pabloec20

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