Package: ltsp
Version: 5.0.40~bzr20080214-1~40.etch.0
Severity: critical

X connections to :6 on LTSP clients are possible from any machine on the
network.

Some notes:

- LDM_DIRECTX = False or True does not change anything
- on the client, X is running with the '-auth /root/.Xauthority' flag.
  However, /root is mounted ro by default. Adding it to copy_dirs in
  /etc/default/ltsp-client-setup allows .Xauthority to be generated, but
  X connections are still possible.
- using iptables rules, we could at least restrict access to the
  terminal server


best,
-Christian
-- 
Dr. Christian Herzog                    e-mail: [EMAIL PROTECTED]
IT Systems Specialist                   voice:      +41 44 633 3950
Department of Physics                   office:           HPR E86.1 
Swiss Federal Institute of Technology   8093 Zurich,    Switzerland



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