CVEs-PoC/2021/CVE-2021-21900.md

### [CVE-2021-21900](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21900)
![](https://img.shields.io/static/v1?label=Product&message=LibreCAD&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-416%3A%20Use%20After%20Free&color=brighgreen)

### Description

A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An attacker can provide a malicious file to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1351

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