cve/2020/CVE-2020-24996.md

### [CVE-2020-24996](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24996)
![](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

There is an invalid memory access in the function TextString::~TextString() located in Catalog.cc in Xpdf 4.0.2. It can be triggered by (for example) sending a crafted pdf file to the pdftohtml binary, which allows a remote attacker to cause a Denial of Service (Segmentation fault) or possibly have unspecified other impact.

### POC

#### Reference
- https://forum.xpdfreader.com/viewtopic.php?f=3&t=42028
- https://forum.xpdfreader.com/viewtopic.php?f=3&t=42028

#### Github
- https://github.com/0xCyberY/CVE-T4PDF
- https://github.com/404notf0und/CVE-Flow
- https://github.com/ARPSyndicate/cvemon