CVEs-PoC/2020/CVE-2020-13544.md

### [CVE-2020-13544](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13544)
![](https://img.shields.io/static/v1?label=Product&message=Softmaker&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-194%3A%20Unexpected%20Sign%20Extension&color=brighgreen)

### Description

An exploitable sign extension vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the document parser to sign-extend a length used to terminate a loop, which can later result in the loop’s index being used to write outside the bounds of a heap buffer during the reading of file data. An attacker can entice the victim to open a document to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161

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