Hi folks,
Talking about some bad experiences with my friend, I discovered (he
told me) it is possible to abort a X session even when the screen is
locked by some kind of application like 'xlock'.
I have made the following test:
1. Logged into the system as 'william' (a normal non-privileged user).
2. startx
3. Run xlock
... the screen is now locked...
4. Tried a hit on some keys. The password screen appears.
5. Then, 'ctrl-alt-backspace' and voila... X is down and my console
is there, opened for me.
I see this as a serious problem once one could let his/her X session
opened and locked and anyone who have access to that machine could abort
the X session and start playing around with the logged user's shell
(which could be the root shell).
What about that?
Tested on:
-------------------------------------
XFree86 Version 4.1.0 / X Window System
(protocol Version 11, revision 0, vendor release 6510)
Release Date: 2 June 2001
If the server is older than 6-12 months, or if your card is
newer than the above date, look for a newer version before
reporting problems. (See http://www.XFree86.Org/FAQ)
Build Operating System: Linux 2.2.19 i686 [ELF]
-------------------------------------
Regards,
William Zanatta
--
Perl combines all of the worst aspects of BASIC, C and line noise.
-- Keith Packard
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