cve/2017/CVE-2017-7833.md

### [CVE-2017-7833](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7833)
![](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=Domain%20spoofing%20with%20Arabic%20and%20Indic%20vowel%20marker%20characters&color=brighgreen)

### Description

Some Arabic and Indic vowel marker characters can be combined with Latin characters in a domain name to eclipse the non-Latin character with some font sets on the addressbar. The non-Latin character will not be visible to most viewers. This allows for domain spoofing attacks because these combined domain names do not display as punycode. This vulnerability affects Firefox < 57.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1370497

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