cve/2012/CVE-2012-5615.md

### [CVE-2012-5615](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5615)
![](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

Oracle MySQL 5.5.38 and earlier, 5.6.19 and earlier, and MariaDB 5.5.28a, 5.3.11, 5.2.13, 5.1.66, and possibly other versions, generates different error messages with different time delays depending on whether a user name exists, which allows remote attackers to enumerate valid usernames.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2012/12/02/3
- http://www.openwall.com/lists/oss-security/2012/12/02/4
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html

#### Github
No PoCs found on GitHub currently.