### [CVE-2017-5390](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5390)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2045.7%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2051%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Insecure%20communication%20methods%20in%20Developer%20Tools%20JSON%20viewer&color=brighgreen)

### Description

The JSON viewer in the Developer Tools uses insecure methods to create a communication channel for copying and viewing JSON or HTTP headers data, allowing for potential privilege escalation. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

### POC

#### Reference
- https://www.mozilla.org/security/advisories/mfsa2017-03/

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