CVEs-PoC/2003/CVE-2003-0743.md

### [CVE-2003-0743](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0743)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the "(no argument given)" string is appended to the buffer.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Farrhouq/Inpt-report