### [CVE-2018-18492](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18492)
![](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%2060.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2064%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use-after-free%20with%20select%20element&color=brighgreen)

### Description

A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ZihanYe/web-browser-vulnerabilities
- https://github.com/alphaSeclab/sec-daily-2019
- https://github.com/hwiwonl/dayone