Stepping Stone User Privilege Escalation

# Introduction

In this lab, we will learn how to escalate privileges to the root user when we cannot directly escalate to root. We will achieve this by first escalating to another regular user, and then using that user's privileges to escalate to the root user. This intermediate user is referred to as a "stepping stone" user.

The goal of this lab is to escalate privileges from the www-data user to the alice user, and then from the alice user to the root user.