CVEs-PoC/2020/CVE-2020-28013.md

### [CVE-2020-28013](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28013)
![](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

Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.

### POC

#### Reference
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28013-PFPSN.txt

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