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this post was submitted on 11 Aug 2023
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You are not being overly cautious. You should absolutely practice isolation. The LastPass hack happened because one of their engineers had a vulnerable Plex server hosted from his work machine. Honestly, next iteration of my home network is going to probably have 4 segments. Home/Users, IOT, Lab, and Work.
interesting, even if they got access to the plex service, how they could have escaped the plex docker container?
i run pretty much the same stack as OP, but also run immich and paperless. i very much care if someone else have a way to access those...
They weren't using docker and the Plex software was multiple years out of data:
https://thehackernews.com/2023/03/lastpass-hack-engineers-failure-to.html
In the LastPass case, I believe it was a native Plex install with a remote code execution vulnerability. But still, even in a Linux container environment, I would not trust them for security isolation. Ultimately, they all share the same kernel. One misconfiguration on the container or an errant privilege escalation exploit and you're in.
It wasnt containerized sadly but remember in a container you still share (albeit split by cgroups) kernel space and the kernel. Only userland is isolated.
So kernel level sploits are still a concern. Wasn't the case here but still.
Thanks. I mean I probably don't have that threat level, but you are right - it also feels good to have isolation.
The downside was the cost of the 2nd machine (~400$) and running it (~5$/month) and the time involved.
But I tend toward thinking it is the right choice
How can anyone run a Plex server on their work machine? And why doesn't their IT dept monitor their devices?