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QuantConnect Lean vulnerable to insecure deserialization

Critical severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jul 20, 2023

Package

nuget QuantConnect.Common (NuGet)

Affected versions

>= 2.3.0.0, <= 2.4.0.1

Patched versions

None

Description

QuantConnect Lean versions from 2.3.0.0 to 2.4.0.1 are affected by an insecure deserialization vulnerability due to insecure configuration of TypeNameHandling property in Json.NET library. One may avoid this issue by only running Lean in an environment where data provided is trusted.

References

Published by the National Vulnerability Database Dec 14, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jul 20, 2023
Last updated Jul 20, 2023

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2020-20136

GHSA ID

GHSA-ww7r-278h-48mh

Source code

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