### [CVE-2020-28018](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28018)
![](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 Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2021/05/11/5
- http://www.openwall.com/lists/oss-security/2021/05/11/5
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/DarkFunct/CVE_Exploits
- https://github.com/Drakfunc/CVE_Exploits
- https://github.com/Live-Hack-CVE/CVE-2020-2801
- https://github.com/Timirepo/CVE_Exploits
- https://github.com/chnzzh/OpenSSL-CVE-lib
- https://github.com/dorkerdevil/CVE-2020-28018
- https://github.com/hktalent/bug-bounty
- https://github.com/lockedbyte/CVE-Exploits
- https://github.com/lockedbyte/lockedbyte
- https://github.com/lockedbyte/slides
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/zr0tt/CVE-2020-28018