Need some security advice for systemtap
Tomasz Chmielewski
mangoo at wpkg.org
Tue Jun 5 08:46:55 UTC 2007
David Smith schrieb:
(...)
> Some basic ideas about how we can allow users without sudo access to run
> "blessed" scripts/modules can be seen at
> <http://sources.redhat.com/bugzilla/show_bug.cgi?id=4523>,
>
> So, I'm looking for thoughts, criticisms, pointers, etc. to do this in a
> manner that won't allow a system to be easily compromised. We're in
> the fairly early stages of this idea, and I'm looking for direction
> before heading down the wrong road.
Am I right? Is it security based on md5sum?
I'm not sure how easy would it be to "produce" two kernel modules having
the same MD5 checksum - but before you continue, you might want to read
a short article called "Attacking Hash Functions by Poisoned Messages":
http://www.cits.rub.de/MD5Collisions/
--
Tomasz Chmielewski
http://wpkg.org
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