Joomscan Security Scanner updated recently with new database have 550 vulnerabilities. Detects file inclusion, sql injection, command execution vulnerabilities of a target Joomla web site. Last update for this tool was in August, 2009 with 466 vulnerabilities.

Download
http://web-center.si/joomscan/joomscan.rar

How to find the Joomla Vulnerability in Backtrack 5 Linux

Step 1: Moving to PenTest folder
Copy/Move the downloaded files in directory
/pentest/web/scanners/joomscan/

Step2: Set Permission
Now you have to set permission for the Joomscan file. In order to this, Type the following command in Terminal(if you don't know how to open terminal at all, please stop reading this and start it from basics of Linux).
CHMOD 0777 joomscan.pl

Step 3: Update
Update the scanner to latest version. To do this, enter the following command in Terminal:
./joomscan.pl update

Step 4: Scanning for Vulnerability
Now everything ok, we have to scan our joomla site for vulnerability. To do this, enter the following command in Terminal:
./joomscan.pl -u www.YourJoomlasite.com

Wait for a while, and it will list of the vulnerability found.
by BreakTheSec