Sandal6823@sh.itjust.works to Linux@lemmy.ml · edit-21 month agoWhy disable ssh login with root on a server if I only log in with keys, not password?message-squaremessage-square81fedilinkarrow-up1105arrow-down15file-text
arrow-up1100arrow-down1message-squareWhy disable ssh login with root on a server if I only log in with keys, not password?Sandal6823@sh.itjust.works to Linux@lemmy.ml · edit-21 month agomessage-square81fedilinkfile-text
On a server I have a public key auth only for root account. Is there any point of logging in with a different account?
minus-squareShortN0te@lemmy.mllinkfedilinkarrow-up3arrow-down6·1 month agoAnd how would you not be able to hijack the password when you have control over the user session?
minus-squareslothrop@lemmy.calinkfedilinkEnglisharrow-up7arrow-down3·1 month agoYou would have to know the root password.
minus-squareShortN0te@lemmy.mllinkfedilinkarrow-up4arrow-down6·1 month agoWith aliases in the bashrc you can hijack any command and execute instead of the command any arbitrary commands. So the command can be extracted, as already stated above, this is not a weakness of sudo but a general one.
minus-squareslothrop@lemmy.calinkfedilinkEnglisharrow-up6arrow-down3·1 month agoYou would have to KNOW the root password.
minus-squareShortN0te@lemmy.mllinkfedilinkarrow-up5arrow-down5·1 month agoNo you can alias that command and hijack the password promt via bashrc and then you have the root password as soon as the user enters it.
minus-squaremiss_demeanour@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up5arrow-down1·edit-21 month agoAs root: # chattr +i /home/ShortN0te/.bashrc Anything else?
minus-squareShortN0te@lemmy.mllinkfedilinkarrow-up4arrow-down4·1 month agoThere are many ways to harden against it, but “just disable root auth” is not really it, since it in itself does not add much.
minus-squaremiss_demeanour@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up5arrow-down2·1 month ago?? Seriously - if you’re “advising” on linux best practices, get lots of liability insurance.
minus-square2ndSkin@sh.itjust.workslinkfedilinkarrow-up5arrow-down2·1 month agoSo, you learned about .bashrc today, and you’re now an expert? Perhaps stand down and let the experts have their say.
minus-square2ndSkin@sh.itjust.workslinkfedilinkarrow-up5arrow-down3·1 month agoNo, that’s not how it works. You really should stop talking shit about things you know nothing about. Truly sad.
$ su -
And how would you not be able to hijack the password when you have control over the user session?
You would have to know the root password.
With aliases in the bashrc you can hijack any command and execute instead of the command any arbitrary commands. So the command can be extracted, as already stated above, this is not a weakness of sudo but a general one.
You would have to KNOW the root password.
No you can alias that command and hijack the password promt via bashrc and then you have the root password as soon as the user enters it.
As root:
Anything else?
There are many ways to harden against it, but “just disable root auth” is not really it, since it in itself does not add much.
??
Seriously - if you’re “advising” on linux best practices, get lots of liability insurance.
So, you learned about .bashrc today, and you’re now an expert?
Perhaps stand down and let the experts have their say.
No, that’s not how it works.
You really should stop talking shit about things you know nothing about.
Truly sad.