Skip to main content

We use cookies to ensure you get the best user experience. For more information see our cookie policy.

Race Conditions Challenge

Knock knock! Race condition. Who's there?

Task 1: The race is on!

In the home directories of Walk, Run and Sprint you will find a vulnerable SUID binary, the C source code and a flag. Your task is to exploit the binary to read the contents of the user's flag.

The challenges are independent of each other and can be done in whatever order you want. It is, however, recommended to start with Walk.

Please allow 3-5 minutes for the VM to fully start. Connect to the attached VM via SSH with the following credentials:

Username: race

Password: car

Answer the questions below

  1. What is the flag for the /home/walk/flag binary?

  2. What is the flag for the /home/run/flag binary?

  3. What is the flag for the /home/sprint/flag binary?

Room Icon

Race Conditions Challenge

Knock knock! Race condition. Who's there?

medium

180 min

3,892

User profile photo.
User profile photo.

To access material, start machines and answer questions login.

Score updated
Score updated

Set up your virtual environment

To successfully complete this room, you'll need to set up your virtual environment. This involves starting both your AttackBox (if you're not using your VPN) and Lab Machines, ensuring you're equipped with the necessary tools and access to tackle the challenges ahead.
Attacker machine
Status:Off
Lab machine
Status:Off

In the home directories of Walk, Run and  you will find a vulnerable SUID binary, the C source code and a flag. Your task is to exploit the binary to read the contents of the user's flag.

The challenges are independent of each other and can be done in whatever order you want. It is, however, recommended to start with Walk.

Please allow 3-5 minutes for the to fully start. Connect to the attached VM via with the following credentials:

Username: race

Password: car

Answer the questions below
What is the flag for the /home/walk/flag binary?

What is the flag for the /home/run/flag binary?

What is the flag for the /home/sprint/flag binary?