Sudo: “Operation not permitted” when program is started as a service, but working when manually started....

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Sudo: “Operation not permitted” when program is started as a service, but working when manually started. Why?


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I need to be able to exec a command as sudo (e.g. sudo echo 'toto') in a custom go program. I've added my user in /etc/sudoers and it works just fine, when I login as my user and run the program manually.



However, when I run the exact same program from a systemd service, I get the following error:



sudo: unable to change to root gid: Operation not permitted
sudo: unable to initialize policy plugin


My service is basic:



[Unit]
Description=test sudo

[Service]
User=test
Group=test
ExecStart=/etc/test/test


and in my /etc/sudoers:



Defaults        env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL

test ALL = NOPASSWD: ALL


What's the difference between manually running the program as my user versus the same program started as a service?



Testing on ubuntu 18.04










share|improve this question

























  • Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

    – sourcejedi
    yesterday


















1















I need to be able to exec a command as sudo (e.g. sudo echo 'toto') in a custom go program. I've added my user in /etc/sudoers and it works just fine, when I login as my user and run the program manually.



However, when I run the exact same program from a systemd service, I get the following error:



sudo: unable to change to root gid: Operation not permitted
sudo: unable to initialize policy plugin


My service is basic:



[Unit]
Description=test sudo

[Service]
User=test
Group=test
ExecStart=/etc/test/test


and in my /etc/sudoers:



Defaults        env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL

test ALL = NOPASSWD: ALL


What's the difference between manually running the program as my user versus the same program started as a service?



Testing on ubuntu 18.04










share|improve this question

























  • Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

    – sourcejedi
    yesterday














1












1








1








I need to be able to exec a command as sudo (e.g. sudo echo 'toto') in a custom go program. I've added my user in /etc/sudoers and it works just fine, when I login as my user and run the program manually.



However, when I run the exact same program from a systemd service, I get the following error:



sudo: unable to change to root gid: Operation not permitted
sudo: unable to initialize policy plugin


My service is basic:



[Unit]
Description=test sudo

[Service]
User=test
Group=test
ExecStart=/etc/test/test


and in my /etc/sudoers:



Defaults        env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL

test ALL = NOPASSWD: ALL


What's the difference between manually running the program as my user versus the same program started as a service?



Testing on ubuntu 18.04










share|improve this question
















I need to be able to exec a command as sudo (e.g. sudo echo 'toto') in a custom go program. I've added my user in /etc/sudoers and it works just fine, when I login as my user and run the program manually.



However, when I run the exact same program from a systemd service, I get the following error:



sudo: unable to change to root gid: Operation not permitted
sudo: unable to initialize policy plugin


My service is basic:



[Unit]
Description=test sudo

[Service]
User=test
Group=test
ExecStart=/etc/test/test


and in my /etc/sudoers:



Defaults        env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL

test ALL = NOPASSWD: ALL


What's the difference between manually running the program as my user versus the same program started as a service?



Testing on ubuntu 18.04







permissions systemd sudo






share|improve this question















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edited yesterday







Quentin

















asked yesterday









QuentinQuentin

13816




13816













  • Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

    – sourcejedi
    yesterday



















  • Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

    – sourcejedi
    yesterday

















Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

– sourcejedi
yesterday





Ah. My first guess was the sudo requiretty option, but actually I don't think that would match the error message. Since you mention Ubuntu, I suspect this might be AppArmor. I don't know how to use AppArmor :-(.

– sourcejedi
yesterday










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I finally found the issue: my service was adding a list of CapabilityBoundingSet for some reason which was restricting the sudo operations.






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    I finally found the issue: my service was adding a list of CapabilityBoundingSet for some reason which was restricting the sudo operations.






    share|improve this answer




























      1














      I finally found the issue: my service was adding a list of CapabilityBoundingSet for some reason which was restricting the sudo operations.






      share|improve this answer


























        1












        1








        1







        I finally found the issue: my service was adding a list of CapabilityBoundingSet for some reason which was restricting the sudo operations.






        share|improve this answer













        I finally found the issue: my service was adding a list of CapabilityBoundingSet for some reason which was restricting the sudo operations.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 5 hours ago









        QuentinQuentin

        13816




        13816






























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