Re: SystemTap / kprobes to watch for other probes?

["James Dickens" <jamesd.wi@gmail.com>]

On 12/21/06, Nathan DeBardeleben <ndebard@lanl.gov> wrote:
> Something I was wondering about is whether it would be possible to write
> a SystemTap script that watched for other kprobes to be inserted and to
> log them somehow.  I'm a bit concerned about the security implications
> of having kprobes turned on in the kernel and the fact that if someone
> were able to insert a probe they could basically hide themselves by
> hiding their module in the module list and doing assorted other
> nefarious things.  If there was a way to write a probe that was always
> inserted which just logged when a another probe was inserted I thought
> that might be a neat thing.
>
> Any thoughts on this?
>
Sorry as with all security issues on Linux and Unix boxes, once the
user has root the game is over,  you could monitor all you like, but
the bad guy can remove your monitoring module, or  remove the log
files or pick any other method to break into the system.

James Dickens
uadmin.blogspot.com


> --
> -- Nathan
> Correspondence
> ---------------------------------------------------------------------
> Nathan DeBardeleben, Ph.D.
> Los Alamos National Laboratory
> Parallel Tools Team
> High Performance Computing Environments
> phone: 505-667-3428
> email: ndebard@lanl.gov
> ---------------------------------------------------------------------
>
>