Question

2

sudo: must be setuid root

rated 0 times [ 2] [ 0] / answers: 1 / hits: 14504 / 1 Year ago, thu, april 13, 2023, 2:57:27

I get the file parmission on my folder, so I run the following command

sudo chmod 777 -R /*

and get some error line.
then I try to login as root user by the following command

sudo su

get this error like as

supravat@supravat:~$ sudo su

sudo: must be setuid root

Then I research regarding this error. and followed some source but error is still present.
http://www.linuxquestions.org/questions/linux-software-2/sudo-must-be-setuid-root-854117/

When I run following commend as like

chown root:root /usr/bin/sudo

Get this mesasage..

chown: changing ownership of '/usr/bin/sudo' : read-only file system

Please help me.

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etzelmortg

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answered 1 Year ago guialk · Accepted Answer

The command you run: sudo chmod 777 -R /* or sudo chmod 777 -R / changes the permission of ALL file in your system to 777: read, write and executable for everyone. That's a major security risk. You opened your system for everyone. NEVER run this command. Everyone who gives you that command wants your system to be insecure. It's peanuts to get root access on such a system.

I recommend you to reinstall your whole system. You could try to set the permissions back to the original ones, but you can never be sure. I see only one option: Reinstallation.