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lockat
1998 May 29
0
Linux auto idle logout & vlock possible security problem
...ep 10s ; kill -HUP <pid-of-your-shell) &
vlock -a
after vlock -a, you can''t change the virtual console on a Linux terminal.
But if you log in, start vlock -a, enter your password you can change
vt...
The same happens when an auto idle logout program logs you off. The vlock
(maybe lockvt also) program doesn''t terminate itself after a SIGHUP,
which is ok, but after this, anyone can log in, start vlock -a, enters
his/her password, and get full access to the console.
Possible solutions:
- don''t use vlock/lockvt
- don''t use auto idle logout program
- as roo...