HackThisSite.org Basic Web Level 3
In this level our background information is:
This time Network Security Sam remembered to upload the password file, but there were deeper problems than that.
In this level Sam has used the same script as level 2 but this time he uploaded the password file. He has made several mistakes that you can exploit to get to the next level.
Hint: Check the source code look for the script that the form posts to and any other interesting items in the source.