### [CVE-2019-3814](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3814)
![](https://img.shields.io/static/v1?label=Product&message=dovecot&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-295&color=brighgreen)

### Description

It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users.

### POC

#### Reference
- https://hackerone.com/reports/480928
- https://hackerone.com/reports/480928
- https://www.dovecot.org/list/dovecot/2019-February/114575.html
- https://www.dovecot.org/list/dovecot/2019-February/114575.html

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