RE: Future Linux devel. Kernels

From: Igmar Palsenberg (
Date: Wed May 10 2000 - 14:20:55 EST

> >I rather have a hole in my non-user running app then in some app that runs
> >as root..
> Is there any way to compromise root, via a buffer overflow or some other
> means, even if the application using a non-previleged user id? Aren't there
> situations where running a userland daemon requires root access. For
> instance, arpd or a routing daemon (routed, gated) that needs be able to
> write settings into the kernel?

Not that I know of. If the deamon switches user ID, it loses it

> Is it possible to configure the Linux kernel so that it is secure. If so,
> what are your thoughts about including a configure option "make config" to
> secure the kernel. So that unsecure functions were disabled when runnning in
> mult-user mode? I understand this would break some userland apps (X,
> multimedia apps, etc). However If your setting up a linux box as a firewall
> or web server or a box that needs to very secure, I don't think these types
> of apps would be installed anyway. Would there be really any need for direct
> hardware access for a box serving as a firewall or Web server?
> Would a "Sercure Kernel" compile option be an acceptable solution/compromise
> to this issue?

It would be nice to have sich things on a FW... Main reason for this not
going in the mainstream kernel is that capabilities are much better.


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