CVEs-PoC/2016/CVE-2016-5293.md

### [CVE-2016-5293](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5293)
![](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=Version&message=%3C%2045.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2050%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Write%20to%20arbitrary%20file%20with%20Mozilla%20Updater%20and%20Maintenance%20Service%20using%20updater.log%20hardlink&color=brighgreen)

### Description

When the Mozilla Updater is run, if the Updater's log file in the working directory points to a hardlink, data can be appended to an arbitrary local file. This vulnerability requires local system access. Note: this issue only affects Windows operating systems. This vulnerability affects Firefox ESR < 45.5 and Firefox < 50.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1246945

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