cve/2023/CVE-2023-42799.md

### [CVE-2023-42799](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42799)
![](https://img.shields.io/static/v1?label=Product&message=moonlight-common-c&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%2050c0a51b10ecc5b3415ea78c21d96d679e2288f9%2C%20%3C%2002b7742f4d19631024bd766bd2bb76715780004e%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-120%3A%20Buffer%20Copy%20without%20Checking%20Size%20of%20Input%20('Classic%20Buffer%20Overflow')&color=brighgreen)

### Description

Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vulnerable to buffer overflow starting in commit 50c0a51b10ecc5b3415ea78c21d96d679e2288f9 due to unmitigated usage of unsafe C functions and improper bounds checking. A malicious game streaming server could exploit a buffer overflow vulnerability to crash a moonlight client, or achieve remote code execution (RCE) on the client (with insufficient exploit mitigations or if mitigations can be bypassed). The bug was addressed in commit 02b7742f4d19631024bd766bd2bb76715780004e.

### POC

#### Reference
- https://github.com/moonlight-stream/moonlight-common-c/security/advisories/GHSA-r8cf-45f4-vf8m

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