Exploit Development - Polkit 2021 vuln | Cybersecurity Awareness | H4cking
🔒 CVE-2021-4034 - Polkit Local Privilege Escalation (PwnKit) | Exploit Development Tutorial 🔒
In this video, I demonstrate the exploit development process for the high-impact vulnerability CVE-2021-4034, also known as PwnKit, which affects the Polkit pkexec utility present on many Linux distributions. This Local Privilege Escalation (LPE) bug allows unprivileged users to gain root access by abusing how pkexec handles environment variables.
📚 Educational Purpose Only
This video is meant for ethical hacking training and cybersecurity education. The steps shown should only be performed in controlled environments, such as CTFs or labs.
🧪 Lab Used: The demonstration is performed on the Kenobi machine from TryHackMe. Please note that this is not the intended path to root for the room — it's an alternative method using a real-world vulnerability.
🔍 What You’ll Learn:
How CVE-2021-4034 works under the hood
Step-by-step walkthrough of the exploit
Understanding the root cause in pkexec
How to weaponize the vulnerability in a safe lab setup
🛠️ Tools Used:
Linux CLI
C code compilation (exploit)
TryHackMe Kenobi VM
Basic privilege escalation techniques
👨💻 Whether you're learning for OSCP, CTFs, or real-world red teaming, this is a must-know vulnerability.
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