CVE-2020-28975 Information

Description

DISPUTED 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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 http://packetstormsecurity.com/files/160281/SciKit-Learn-0.23.2-Denial-Of-Service.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5