### [CVE-2019-17017](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17017)
![](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=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Type%20Confusion%20in%20XPCVariant.cpp&color=brighgreen)

### Description

Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.

### POC

#### Reference
- http://packetstormsecurity.com/files/155912/Slackware-Security-Advisory-mozilla-thunderbird-Updates.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1603055

#### Github
- https://github.com/ARPSyndicate/cvemon