### [CVE-2009-4269](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4269)
![](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

The password hash generation algorithm in the BUILTIN authentication functionality for Apache Derby before 10.6.1.0 performs a transformation that reduces the size of the set of inputs to SHA-1, which produces a small search space that makes it easier for local and possibly remote attackers to crack passwords by generating hash collisions, related to password substitution.

### POC

#### Reference
- http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html
- http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html

#### Github
- https://github.com/ARPSyndicate/cvemon