CVEs-PoC/2021/CVE-2021-23440.md

### [CVE-2021-23440](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23440)
![](https://img.shields.io/static/v1?label=Product&message=set-value&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C2.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D3.0.0%20%3C4.0.1%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Prototype%20Pollution&color=brightgreen)

### Description

This affects the package set-value before <2.0.1, >=3.0.0 <4.0.1. A type confusion vulnerability can lead to a bypass of CVE-2019-10747 when the user-provided keys used in the path parameter are arrays.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1584212
- https://snyk.io/vuln/SNYK-JS-SETVALUE-1540541
- https://www.huntr.dev/bounties/2eae1159-01de-4f82-a177-7478a408c4a2/
- https://www.oracle.com/security-alerts/cpujan2022.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/dellalibera/dellalibera
- https://github.com/seal-community/cli
- https://github.com/seal-community/patches