### [CVE-2009-4028](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4028)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The vio_verify_callback function in viosslfactories.c in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41, when OpenSSL is used, accepts a value of zero for the depth of X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary SSL-based MySQL servers via a crafted certificate, as demonstrated by a certificate presented by a server linked against the yaSSL library.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/DButter/whitehat_public
- https://github.com/Dokukin1/Metasploitable
- https://github.com/Iknowmyname/Nmap-Scans-M2
- https://github.com/NikulinMS/13-01-hw
- https://github.com/Zhivarev/13-01-hw
- https://github.com/chnzzh/OpenSSL-CVE-lib
- https://github.com/scmanjarrez/CVEScannerV2
- https://github.com/smabramov/Vulnerabilities-and-attacks-on-information-systems
- https://github.com/tomwillfixit/alpine-cvecheck
- https://github.com/zzzWTF/db-13-01