cve/2023/CVE-2023-43787.md

### [CVE-2023-43787](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43787)
![](https://img.shields.io/static/v1?label=Product&message=Fedora&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%206&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%207&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%209&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=libX11&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Heap-based%20Buffer%20Overflow&color=brighgreen)

### Description

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

### POC

#### Reference
- https://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-two/

#### Github
- https://github.com/AWSXXF/xorg_mirror_libx11
- https://github.com/fkie-cad/nvd-json-data-feeds
- https://github.com/jfrog/jfrog-CVE-2023-43786-libX11_DoS