CVEs-PoC/2020/CVE-2020-28049.md

### [CVE-2020-28049](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28049)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.

### POC

#### Reference
- https://github.com/sddm/sddm/releases

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