This is Max Kellermann's proof of concept for Dirty Pipe, but modified to overwrite root's password field in /etc/passwd and restore after popping a root shell.
Side Note: I do not claim any credit for finding this vulnerability or writing the proof of concept. This exploit is merely a small modification of Kellermann's proof of concept to enable quick/easy exploitation. Please read the original article on this extremely interesting vulnerability @ https://dirtypipe.cm4all.com/ when you get the opportunity. It really does deserve your time to understand it.
- Compile with
./compile.sh(assumesgccis installed) - Run
./exploitand it'll pop a root shell
If you get this error message:
- Login as
rootwith the passwordaaron. - Then, restore
/etc/passwdby runningmv /tmp/passwd.bak /etc/passwd
(oops sorry my laptop battery is dying and my charger broke so I don't have time to fix this the right now, sorry)