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Isn't it weird that we put credentials in the environment?
(lemmy.sdf.org)
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this post was submitted on 18 Aug 2023
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Environments are per-process. Every program can have its own environment, so don't inject secrets where they're not needed.
I'm using bubblewrap to restrict access to FS.
I am not familiar with the software bubblewrap so I am just picturing your hard drives wrapped up inside your case.
That's an old white-hat trick. If the tables drop, the wrap helps them bounce.
There you go: https://wiki.archlinux.org/title/Bubblewrap
The environment of other processes is readable in procfs.
/proc/PID/environThanks to the permissions it's read-only, and only by the user with which the process runs, but it's still bad, I think
Don't all programs run as the user anyways? That changes nothing on a single user machine
A proper server should have one user per service.
yay password rotation month
Service users generally don’t have passwords
You don't login as service users, they're just a means of taking advantage of the user separation features. They have the login shell set to /bin/false typically.
Not
/bin/nologin/?From a quick search I've just done, the major difference is that
/bin/falsecan't return any text, the only thing it can do as specified via POSIX standards is returnfalse.So if you set someone's shell to
/bin/nologinthere can be some text that says "You're not allowed shell access", similar to what happens if you try to SSH into say GitHub.Of course, for a service account that won't be operated by a person, that doesn't matter - so whichever one you use is just whichever the operator thought of first, most likely.
true dat; false trends to CVE vs nologin
Some have their own users, like gitlab