CVE-2020-20136 QuantConnect Lean vulnerable to insecure deserialization
Insecure deserialization in QuantConnect Lean allows remote code execution via malicious JSON payloads due to unsafe Json.NET configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-20136?
CVE-2020-20136 is a critical unsafe deserialization vulnerability in n/a, published on 14 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-502
Which versions are affected by CVE-2020-20136?
2 open source packages ship an affected version, including QuantConnect.Common. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
QuantConnect.Common NuGet | From 2.3.0.0 to 2.4.0.1 | None |
QuantConnect.Common NuGet | From 2.3.0.0 to 2.4.0.1 | None |
Products include Quantconnect Lean.
How do I fix CVE-2020-20136?
No fix has been published for CVE-2020-20136 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2020-20136 being exploited?
There is no known exploitation of CVE-2020-20136 in the wild and no public exploit code.
Sources
Also known as GHSA-ww7r-278h-48mh.