CVEs-PoC/2021/CVE-2021-45884.md

### [CVE-2021-45884](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45884)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

In Brave Desktop 1.17 through 1.33 before 1.33.106, when CNAME-based adblocking and a proxying extension with a SOCKS fallback are enabled, additional DNS requests are issued outside of the proxying extension using the system's DNS settings, resulting in information disclosure. NOTE: this issue exists because of an incomplete fix for CVE-2021-21323 and CVE-2021-22916.

### POC

#### Reference
- https://github.com/brave/brave-core/pull/10742

#### Github
- https://github.com/neeythann/neeythann