Sandal6823@sh.itjust.works to Linux@lemmy.ml · 3 months agoWhy disable ssh login with root on a server if I only log in with keys, not password?781074
103Why 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 · 3 months ago78
On a server I have a public key auth only for root account. Is there any point of logging in with a different account?
Show ContentShortN0te@lemmy.ml36·3 months agoAnd how would you not be able to hijack the password when you have control over the user session?
Show ContentShortN0te@lemmy.ml46·3 months 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.
Show ContentShortN0te@lemmy.ml45·3 months 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.
Show Contentmiss_demeanour@lemmy.dbzer0.comEnglish51·3 months agoAs root: # chattr +i /home/ShortN0te/.bashrc Anything else?
Show ContentShortN0te@lemmy.ml44·3 months 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.
Show Contentmiss_demeanour@lemmy.dbzer0.comEnglish52·3 months ago?? Seriously - if you’re “advising” on linux best practices, get lots of liability insurance.
Show Content2ndSkin@sh.itjust.works52·3 months agoSo, you learned about .bashrc today, and you’re now an expert? Perhaps stand down and let the experts have their say.
Show Content2ndSkin@sh.itjust.works53·3 months 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.