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Photon v0.4.0: Basic moderation and QoL features!
(photon.xylight.dev)
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this post was submitted on 27 Jul 2023
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Android
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Yes this, thanks!
Basically it's not hard to break out of docker, I don't want to run photon as root. If it gets hacked while running as root, it's game over.
It's pretty hard to break out of Docker unless the user does something stupid, like mount the host's Docker socket into the container.
Casual container breakouts are not common at all, they're a big deal, and fixed pretty quickly.
A quick google tells me there were 3 vulns in 2022 allowing it. I'm not sure why you would argue for a horrible security practice under the excuse "it's not common". Even if it was only once every few years, the app doesn't need root so it shouldn't run as root.
I'm not advocating for running containers as root, I was correcting your suggestion that container breakouts are trivial and easy to perform. But let's walk through those 2022 breakout vulns shall we? I even found one more.
CVE-2022-0847 - DirtyPipe, a Linux kernel vulnerability, and one of the most major and prolific Linux kernel vulns to date. In addition, it wouldn't have mattered if the container ran as root or not, this was a significant Linux kernel flaw. In fact, the PoC runs the container as an unprivileged user.
CVE-2022-0492 - Needed
CAP_SYS_ADMINto be exploitable, isn't exploitable anymore, and falls under my remark of "the user doing something stupid."CVE-2022-0492 - Vulnerability due to cgroups, and wouldn't be exploitable as a root container user unless a very specific set of 5 prerequisites were met. "Just being root" was not enough for exploitation.
CVE-2022-23648 - Was a read-only vulnerability relating to volume mounts, root vs non-root was not relevant to the vulnerability, and it only allowed for "breakout" in situations where you're running in a Kubernetes cluster and the container can read service account tokens. Running as a non root user would not have prevented this.
I'm not saying "running as root doesn't matter," running as a non root user is a best practice, yes. But breakout vulns are more rare and harder to exploit than even your response to me is trying suggest.
Touche.
https://github.com/Xyphyn/photon/pull/35
they'll probably have it merged soon