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Security and docker (sh.itjust.works)

submitted 3 months ago by [email protected] to c/[email protected]

32 comments fedilink hide all child comments

How do i you decide whats safe to run

I recently ran Gossa on my home server using Docker, mounting it to a folder. Since I used rootless Docker, I was curious - if Gossa were to be a virus, would I have been infected? Have any of you had experience with Gossa?

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[–] [email protected] 5 points 3 months ago (6 children)

Idk how to decide what is safe or not, but as a warning, Docker containers can escape trivially and have access to the kernel.

[–] [email protected] 2 points 3 months ago (2 children)

Can you expand on this wild claim? The whole point of containers is isolation so what you are saying is that containers fail at that all the time?

[–] [email protected] 6 points 3 months ago (1 children)

They might be talking about posts like this (which I would love to have refuted, as this kind of info has so far kept me from using Docker significantly):

https://security.stackexchange.com/a/169649

[–] [email protected] 1 points 3 months ago

There is nothing to refute, 100% correct

[–] [email protected] 0 points 3 months ago* (last edited 3 months ago)

Docker/Podman and LXC linux containers share the same kernel with the host machine. Root in the container is root period (in the case of rootfull containers). Even without root, much of the data on your machine is readable from any user. With a exploit to escape the container (which are common) the malicious program has root on the machine. This is a known attack vector against linux containers. VMs are much better for isolating untrusted software from the host OS.

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