Question

10

rated 0 times [ 10] [ 0] / answers: 1 / hits: 32756 / 1 Year ago, sun, march 5, 2023, 10:36:51

Why might sudo chmod -R a+w * cause

sudo: /etc/sudoers is mode 0640, should be 0440 sudo:   

no valid sudoers sources found, quitting

and how might it be made to work?

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Location: French Southern and Antarctic Lands

Member since Fri, Jan 6, 2023

1 Year ago

answered 1 Year ago iething · Accepted Answer

I think your best bet is to start the system in recovery mode (see here for instructions), drop to root shell and do chmod 0440 /etc/sudoers.

EDIT: as Mik suggested below, the following should work as well without rebooting the system:

pkexec chmod 0440 /etc/sudoers