CVE-2021-3156

Root shell PoC for CVE-2021-3156 (no bruteforce)

For educational purposes etc.

Tested on Ubuntu 20.04 against sudo 1.8.31

All research credit: Qualys Research Team Check out the details on their blog.

You can check your version of sudo is vulnerable with: $ sudoedit -s Y. If it asks for your password it's most likely vulnerable, if it prints usage information it isn't. You can downgrade to the vulnerable version on Ubuntu 20.04 for testing purposes with $ sudo apt install sudo=1.8.31-1ubuntu1

Usage

$ make

$ ./exploit