OverTheWire Natas Level 7

Finally, with level 7 of OverTheWire's Natas wargame, we start to get to more "real world" vulnerabilities.  It's still very easy, but it's at least getting better.

We start with a single page, that has 2 navigation links.

 I noted that the URLs had a "page=" parameter.  I thought maybe this would be the file it was including.  Viewing the source gave a nice reminder of where the password for the next level would be stored.

 I then tried a directory traversal exploit, pointing to the password file for the next level.  It successfully displayed the password.