OS is a little bit Sick

Buenas hackers! Os traigo otro CTF de la página Vulnhub, para poder compartir y así aprender métodos de intrusión. SickOS

Name........: SickOs1.2
Date Release: 26 Apr 2016
Author......: D4rk
Series......: SickOs
Objective...: Get /root/7d03aaa2bf93d80040f3f22ec6ad9d5a.txt
Tester(s)...: h1tch1, Eagle11
Twitter.....: https://twitter.com/D4rk36

This is second in following series from SickOs and is independent of the prior releases, scope of challenge is 
to gain highest privileges on the system.

Un saludo Naivenom