CVEs-PoC/2021/CVE-2021-30500.md

### [CVE-2021-30500](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30500)
![](https://img.shields.io/static/v1?label=Product&message=upx&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20upx%204.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-476&color=brighgreen)

### Description

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

### POC

#### Reference
- https://github.com/upx/upx/issues/485

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