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Disabling sudo su in ubuntu 14.04
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) sudo, su problemsWhy is sudo -s better than sudo su?What are the differences between “su”, “sudo -s”, “sudo -i”, “sudo su”?I can't do “sudo”sudo su doesn't change users for mysqlAccessing sudo from a non-administrator profileUbuntu sudo su and server su clarificationRe-disabling the root accountSudo and su simultaneously?sudo -i and sudo su - explained
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I need to accomplish following things .
Disable ubuntu user
Disable sudo su for all user .
Each user should able to execute sudo
I have modified my sudoer file as below
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
Cmnd_Alias NSHELLS = /bin/sh,/bin/bash
Cmnd_Alias NSU = /bin/su
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
**%sysadmins ALL=(ALL) NOPASSWD:ALL ,!NSHELLS, !NSU**
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
Still I can access sudo using the command
# sudo sudo su
How to disable this . Any help is highly apprciable . Thanks in advance .
su
edited Dec 19 '14 at 13:34
muru
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
add a comment |
I need to accomplish following things .
Disable ubuntu user
Disable sudo su for all user .
Each user should able to execute sudo
I have modified my sudoer file as below
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
Cmnd_Alias NSHELLS = /bin/sh,/bin/bash
Cmnd_Alias NSU = /bin/su
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
**%sysadmins ALL=(ALL) NOPASSWD:ALL ,!NSHELLS, !NSU**
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
Still I can access sudo using the command
# sudo sudo su
How to disable this . Any help is highly apprciable . Thanks in advance .
su
edited Dec 19 '14 at 13:34
muru
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
It did not work for me .
– user1726453
Dec 19 '14 at 12:54
add a comment |
I need to accomplish following things .
Disable ubuntu user
Disable sudo su for all user .
Each user should able to execute sudo
I have modified my sudoer file as below
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
Cmnd_Alias NSHELLS = /bin/sh,/bin/bash
Cmnd_Alias NSU = /bin/su
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
**%sysadmins ALL=(ALL) NOPASSWD:ALL ,!NSHELLS, !NSU**
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
Still I can access sudo using the command
# sudo sudo su
How to disable this . Any help is highly apprciable . Thanks in advance .
su
edited Dec 19 '14 at 13:34
muru
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
I need to accomplish following things .
Disable ubuntu user
Disable sudo su for all user .
Each user should able to execute sudo
I have modified my sudoer file as below
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
Cmnd_Alias NSHELLS = /bin/sh,/bin/bash
Cmnd_Alias NSU = /bin/su
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
**%sysadmins ALL=(ALL) NOPASSWD:ALL ,!NSHELLS, !NSU**
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
Still I can access sudo using the command
# sudo sudo su
How to disable this . Any help is highly apprciable . Thanks in advance .
su
su
edited Dec 19 '14 at 13:34
muru
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
edited Dec 19 '14 at 13:34
muru
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
edited Dec 19 '14 at 13:34
muru
1
edited Dec 19 '14 at 13:34
muru
1
edited Dec 19 '14 at 13:34
muru
1
1
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
asked Dec 19 '14 at 11:26
user1726453user1726453
21112
21112
Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
It did not work for me .
– user1726453
Dec 19 '14 at 12:54
add a comment |
Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
It did not work for me .
– user1726453
Dec 19 '14 at 12:54
Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
It did not work for me .
– user1726453
Dec 19 '14 at 12:54
It did not work for me .
– user1726453
Dec 19 '14 at 12:54
add a comment |
3 Answers
3
active
oldest
votes
With respect, if you get what you ask for and somebody can run sudo <anything but su>, they can:
- Run
sudo bash - Run
sudo -i - Create a script that does something similar (including directly running
su). - Just edit the configuration with
sudo visudo
The point I'm trying to make is that if you allow people to run anything (or even nearly anything), they are as good as root. There are incalculable numbers of ways they could circumvent you.
If you only want them to be able to run a finite number of commands as root, create a new group (eg semisudo) and add each command to sudoers, like so:
%semisudo localhost=/path/to/command
%semisudo localhost=/path/to/another/command
And then add the user to that group and kick them out of admin/sudo.
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
@user1726453 and anyone having the same concern, see this answer on logging possibility aftersudo su: unix.stackexchange.com/a/109836/30230
– PF4Public
Jun 3 '16 at 18:18
add a comment |
Are you sure this is the solution? I tried to use this to disable sudo su - on my Rasbian as user pi, I still got in as root without even being asked for password for pi. Quite dangerous it seems.
answered 9 mins ago
Ben Z.Ben Z.
613
add a comment |
I got work around to disable sudo sudo su . Just need to comment below line in sudoer file .
#root ALL=(ALL:ALL) ALL
It is working for me . Thanks all for your help .
edited Dec 19 '14 at 13:33
muru
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
With respect, if you get what you ask for and somebody can run sudo <anything but su>, they can:
- Run
sudo bash - Run
sudo -i - Create a script that does something similar (including directly running
su). - Just edit the configuration with
sudo visudo
The point I'm trying to make is that if you allow people to run anything (or even nearly anything), they are as good as root. There are incalculable numbers of ways they could circumvent you.
If you only want them to be able to run a finite number of commands as root, create a new group (eg semisudo) and add each command to sudoers, like so:
%semisudo localhost=/path/to/command
%semisudo localhost=/path/to/another/command
And then add the user to that group and kick them out of admin/sudo.
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
@user1726453 and anyone having the same concern, see this answer on logging possibility aftersudo su: unix.stackexchange.com/a/109836/30230
– PF4Public
Jun 3 '16 at 18:18
add a comment |
With respect, if you get what you ask for and somebody can run sudo <anything but su>, they can:
- Run
sudo bash - Run
sudo -i - Create a script that does something similar (including directly running
su). - Just edit the configuration with
sudo visudo
The point I'm trying to make is that if you allow people to run anything (or even nearly anything), they are as good as root. There are incalculable numbers of ways they could circumvent you.
If you only want them to be able to run a finite number of commands as root, create a new group (eg semisudo) and add each command to sudoers, like so:
%semisudo localhost=/path/to/command
%semisudo localhost=/path/to/another/command
And then add the user to that group and kick them out of admin/sudo.
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
@user1726453 and anyone having the same concern, see this answer on logging possibility aftersudo su: unix.stackexchange.com/a/109836/30230
– PF4Public
Jun 3 '16 at 18:18
add a comment |
With respect, if you get what you ask for and somebody can run sudo <anything but su>, they can:
- Run
sudo bash - Run
sudo -i - Create a script that does something similar (including directly running
su). - Just edit the configuration with
sudo visudo
The point I'm trying to make is that if you allow people to run anything (or even nearly anything), they are as good as root. There are incalculable numbers of ways they could circumvent you.
If you only want them to be able to run a finite number of commands as root, create a new group (eg semisudo) and add each command to sudoers, like so:
%semisudo localhost=/path/to/command
%semisudo localhost=/path/to/another/command
And then add the user to that group and kick them out of admin/sudo.
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
With respect, if you get what you ask for and somebody can run sudo <anything but su>, they can:
- Run
sudo bash - Run
sudo -i - Create a script that does something similar (including directly running
su). - Just edit the configuration with
sudo visudo
The point I'm trying to make is that if you allow people to run anything (or even nearly anything), they are as good as root. There are incalculable numbers of ways they could circumvent you.
If you only want them to be able to run a finite number of commands as root, create a new group (eg semisudo) and add each command to sudoers, like so:
%semisudo localhost=/path/to/command
%semisudo localhost=/path/to/another/command
And then add the user to that group and kick them out of admin/sudo.
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
edited Jun 4 '16 at 8:28
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
answered Dec 19 '14 at 12:23
Oli♦Oli
224k90567768
224k90567768
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
@user1726453 and anyone having the same concern, see this answer on logging possibility aftersudo su: unix.stackexchange.com/a/109836/30230
– PF4Public
Jun 3 '16 at 18:18
add a comment |
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
@user1726453 and anyone having the same concern, see this answer on logging possibility aftersudo su: unix.stackexchange.com/a/109836/30230
– PF4Public
Jun 3 '16 at 18:18
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Here the motto is to see the changes made by the sysadmin users on a server . if sudo su will work , then
– user1726453
Dec 19 '14 at 12:36
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
Thanks for quick update and information .I understand the risk of allowing everything with sudo .Difficult for us to add finite command for systemadmins who access the server daily basis .Here the motto is to see the changes made by the each sysadmin users on a server . if sudo su will work , then difficult to monitor their activities as they can run command after hitting sudo su .Everything will logged as root rather than the user name .
– user1726453
Dec 19 '14 at 12:46
1
1
@user1726453 and anyone having the same concern, see this answer on logging possibility after
sudo su: unix.stackexchange.com/a/109836/30230– PF4Public
Jun 3 '16 at 18:18
@user1726453 and anyone having the same concern, see this answer on logging possibility after
sudo su: unix.stackexchange.com/a/109836/30230– PF4Public
Jun 3 '16 at 18:18
add a comment |
Are you sure this is the solution? I tried to use this to disable sudo su - on my Rasbian as user pi, I still got in as root without even being asked for password for pi. Quite dangerous it seems.
answered 9 mins ago
Ben Z.Ben Z.
613
add a comment |
Are you sure this is the solution? I tried to use this to disable sudo su - on my Rasbian as user pi, I still got in as root without even being asked for password for pi. Quite dangerous it seems.
answered 9 mins ago
Ben Z.Ben Z.
613
add a comment |
Are you sure this is the solution? I tried to use this to disable sudo su - on my Rasbian as user pi, I still got in as root without even being asked for password for pi. Quite dangerous it seems.
answered 9 mins ago
Ben Z.Ben Z.
613
Are you sure this is the solution? I tried to use this to disable sudo su - on my Rasbian as user pi, I still got in as root without even being asked for password for pi. Quite dangerous it seems.
answered 9 mins ago
Ben Z.Ben Z.
613
answered 9 mins ago
Ben Z.Ben Z.
613
answered 9 mins ago
Ben Z.Ben Z.
613
answered 9 mins ago
Ben Z.Ben Z.
613
613
add a comment |
add a comment |
I got work around to disable sudo sudo su . Just need to comment below line in sudoer file .
#root ALL=(ALL:ALL) ALL
It is working for me . Thanks all for your help .
edited Dec 19 '14 at 13:33
muru
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
add a comment |
I got work around to disable sudo sudo su . Just need to comment below line in sudoer file .
#root ALL=(ALL:ALL) ALL
It is working for me . Thanks all for your help .
edited Dec 19 '14 at 13:33
muru
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
add a comment |
I got work around to disable sudo sudo su . Just need to comment below line in sudoer file .
#root ALL=(ALL:ALL) ALL
It is working for me . Thanks all for your help .
edited Dec 19 '14 at 13:33
muru
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
I got work around to disable sudo sudo su . Just need to comment below line in sudoer file .
#root ALL=(ALL:ALL) ALL
It is working for me . Thanks all for your help .
edited Dec 19 '14 at 13:33
muru
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
edited Dec 19 '14 at 13:33
muru
1
edited Dec 19 '14 at 13:33
muru
1
edited Dec 19 '14 at 13:33
muru
1
1
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
answered Dec 19 '14 at 13:19
user1726453user1726453
21112
21112
add a comment |
add a comment |
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Try with the command hope it will simply help you to disable sudosu for the user sudo passwd -dl root.
– vembutech
Dec 19 '14 at 12:09
It did not work for me .
– user1726453
Dec 19 '14 at 12:54