2021 Server Root Method


Root shell PoC for CVE-2021-3156

For educational purposes etc.

Tested on Ubuntu 20.04 against sudo 1.8.31

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


$ make

$ ./exploit


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