cve/2021/CVE-2021-39246.md

### [CVE-2021-39246](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39246)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

Tor Browser through 10.5.6 and 11.x through 11.0a4 allows a correlation attack that can compromise the privacy of visits to v2 onion addresses. Exact timestamps of these onion-service visits are logged locally, and an attacker might be able to compare them to timestamp data collected by the destination server (or collected by a rogue site within the Tor network).

### POC

#### Reference
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.md
- https://sick.codes/sick-2021-111

#### Github
No PoCs found on GitHub currently.