CVEs-PoC/2021/CVE-2021-23424.md

### [CVE-2021-23424](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23424)
![](https://img.shields.io/static/v1?label=Product&message=ansi-html&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D%200%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Regular%20Expression%20Denial%20of%20Service%20(ReDoS)&color=brighgreen)

### Description

This affects all versions of package ansi-html. If an attacker provides a malicious string, it will get stuck processing the input for an extremely long time.

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567198
- https://snyk.io/vuln/SNYK-JS-ANSIHTML-1296849

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/MaySoMusician/geidai-ikoi
- https://github.com/jra89/thethirdparty