### [CVE-2017-5416](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5416)
![](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=unspecified%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Null%20dereference%20crash%20in%20HttpChannel&color=brightgreen)

### Description

In certain circumstances a networking event listener can be prematurely released. This appears to result in a null dereference in practice. This vulnerability affects Firefox < 52 and Thunderbird < 52.

### POC

#### Reference
- https://www.mozilla.org/security/advisories/mfsa2017-05/

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