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Best ways to Sandbox a sketchy Game on Linux?
(sh.itjust.works)
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this post was submitted on 22 Jan 2025
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Linux
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Fitejail is a large SETUID binary which weakens security and can aid in privilege escalation. Use Bubblewrap (preinstalled on most Linux systems cus of Flatpak) which runs unpriveleged. Bubblejail is a program that makes it easier to make sandboxes profiles for apps.
Thank you for the recommendation. I plan to use Bubblejail.
Oof, I didn't know that about firejail. I'd heard of it, but I'd never used it. Like, c'mon folks! If you need privilege escalation, either require launching as root (if appropriate), or delegate the responsibility to a small, well-audited tool designed explicitly for the purpose and spawn a new privileged pid. Don't use SUID. You will fuck it up. If you reach the point where setuid is your only option, then you've hopefully learned enough to rearchitect to not need it, or to give up, or use it if you're, say, someone who maintains a libc or something.
EDIT: this is overly dramatic, but also it's not. I personally feel like using SUID is kinda like rolling your own crypto in terms of required competence.