cve/2018/CVE-2018-20450.md

### [CVE-2018-20450](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20450)
![](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

The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.

### POC

#### Reference
- https://github.com/evanmiller/libxls/issues/34
- https://github.com/evanmiller/libxls/issues/34

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