Run the python script at the end of the article as non admin/non root user. The script allows you to create a copy of a binary in say /usr/bin with "set user ID

Run the python script at the end of the article as non admin/non root user. The script allows you to create a copy of a binary in say /usr/bin with "set user ID execution" bit set and owned by root! This should not be possible without root privileges. This is pretty bad, and trivially exploitable. Basically anyone that has non-root access to your computer can trivially become root and take over the system.