CVEs-PoC/2017/CVE-2017-7842.md

### [CVE-2017-7842](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7842)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2057%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Referrer%20Policy%20is%20not%20always%20respected%20for%20%3Clink%3E%20elements&color=brighgreen)

### Description

If a document's Referrer Policy attribute is set to "no-referrer" sometimes two network requests are made for "<link>" elements instead of one. One of these requests includes the referrer instead of respecting the set policy to not include a referrer on requests. This vulnerability affects Firefox < 57.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1397064

#### Github
- https://github.com/ARPSyndicate/cvemon