Voytek Eymont wrote:

> thanks, Andrew
> 
> unfortuantly, it seems my user does have vulnerable version of Joomla...
> clearly he is not following Mambo/Joomla advisories...

If you allow your users to install their own versions of X, then
your distribution's patching mechanism is bypassed and you have
no way of easily keeping up to date with patches.

One way of dealing with this is to make each user run in a 
chroot/UML/Xen/whatever instance so that when their environment
is compromised it only affects them and not everyone else on
the machine.

Erik
-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo
+-----------------------------------------------------------+
"Hundreds of thousands of people couldn't care less about Kylix
and what it runs on.  It's there for the dying breed of die-hard
Pascal fanatics who missed their 20 year window to migrate to C
and C++."  -- Kaz Kylheku in comp.os.linux.development.apps
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