### [CVE-2003-0190](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0190)
![](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

OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.

### POC

#### Reference
- http://lab.mediaservice.net/advisory/2003-01-openssh.txt
- http://marc.info/?l=bugtraq&m=105172058404810&w=2
- http://www.redhat.com/support/errata/RHSA-2003-222.html

#### Github
- https://github.com/0xdea/advisories
- https://github.com/0xdea/exploits
- https://github.com/Live-Hack-CVE/CVE-2003-0190
- https://github.com/Live-Hack-CVE/CVE-2003-1562
- https://github.com/bigb0x/CVE-2024-6387
- https://github.com/bigb0x/OpenSSH-Scanner
- https://github.com/octane23/CASE-STUDY-1
- https://github.com/ryanalieh/openSSH-scanner