Title. Just had this baseless yet possible idea on my head and I’d like to know how wrong it is? Since afaik, “nobody” has absolutely zero permissions… other than the ones given by the user. Pretty sure I’m missing something vital or important, but… I’m completely fine being called dumb every now and then.

Thanks in advance.

  • dack@lemmy.world
    11·
    1 year ago

    With rootless containers, even root in the container is basically useless anyway because it truly runs as a fake ID on the host.

    I’ve seen this repeated a lot, but I’m not really convinced running as root inside containers is a good/safe thing to do. User namespaces can provide some protection for the host, but that does nothing for the rest of the files inside the guest. For example, consider a server software with an arbitrary file write vulnerability. If the process is running as a low privilege user, exploiting the vulnerability might not really get you anywhere. If it’s running as root, it’s basically a free pass to root privilege and arbitrary code execution within the container.