cve/2021/CVE-2021-21220.md

### [CVE-2021-21220](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21220)
![](https://img.shields.io/static/v1?label=Product&message=Chrome&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2089.0.4389.128%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Insufficient%20validation%20of%20untrusted%20input&color=brighgreen)

### Description

Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

### POC

#### Reference
- http://packetstormsecurity.com/files/162437/Google-Chrome-XOR-Typer-Out-Of-Bounds-Access-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/176210/Chrome-V8-JIT-XOR-Arbitrary-Code-Execution.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/EdgeSecurityTeam/Vulnerability
- https://github.com/Ostorlab/KEV
- https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
- https://github.com/anvbis/chrome_v8_ndays
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/m1dsummer/d3ctf-2023-web-d3icu
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/security-dbg/CVE-2021-21220
- https://github.com/sploitem/v8-writeups
- https://github.com/tzwlhack/Vulnerability
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC