[oss] Second assignment answers

[Lucian Cojocar]

Hi,

on 13th of May (Monday), we will present the solutions for the second 
assignment (the CTF game).

Level 5 (and 6) had two unwanted bugs. So there is another solution 
possible for the 6th level.

We enabled the old accounts on the server, so if you want to test your 
solutions you're welcome to do so by using the old credentials.

You wont get extra points but finding another solution for 6th level 
(the one that doesn't involves any file path abuse) is a worthwhile 
experience.

Have fun,
Lucian