cve/2023/CVE-2023-40574.md

### [CVE-2023-40574](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40574)
![](https://img.shields.io/static/v1?label=Product&message=FreeRDP&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%203.0.0-beta1%2C%20%3C%203.0.0-beta3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-787%3A%20Out-of-bounds%20Write&color=brighgreen)

### Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the `writePixelBGRX` function. This issue is likely down to incorrect calculations of the `nHeight` and `srcStep` variables. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

### POC

#### Reference
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-422p-gj6x-93cw

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