cve/2019/CVE-2019-20421.md

### [CVE-2019-20421](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20421)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.

### POC

#### Reference
- https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8
- https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8
- https://github.com/Exiv2/exiv2/issues/1011
- https://github.com/Exiv2/exiv2/issues/1011

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