CVEs-PoC/2021/CVE-2021-20304.md

### [CVE-2021-20304](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20304)
![](https://img.shields.io/static/v1?label=Product&message=OpenEXR&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Fixed%20in%20OpenEXR%203.0.0-beta%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-190%20-%20Integer%20Overflow%20or%20Wraparound&color=brightgreen)

### Description

A flaw was found in OpenEXR's hufDecode functionality. This flaw allows an attacker who can pass a crafted file to be processed by OpenEXR, to trigger an undefined right shift error. The highest threat from this vulnerability is to system availability.

### POC

#### Reference
- https://github.com/AcademySoftwareFoundation/openexr/pull/849

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