Problem with login

[Michael Casadevall]

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I don't think I should be able to do this:

(I am using telnet to make it easy to copy and paste, but it works on  
the real console)

slivermons:~ mcasadevall$ telnet 10.211.55.4
Trying 10.211.55.4...
Connected to 10.211.55.4.
Escape character is '^]'.
Password:
login: Invalid password
Use `login USER' to login, or `help' for more information.
login> ls
README
login> vi

E558: Terminal entry not found in terminfo
'mach-color' not known. Available builtin terminals are:
    builtin_riscos
    builtin_amiga
    builtin_beos-ansi
    builtin_ansi
    builtin_pcansi
    builtin_win32
    builtin_vt320
    builtin_vt52
    builtin_xterm
    builtin_iris-ansi
    builtin_debug
    builtin_dumb
defaulting to 'ansi'


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~                                    VIM - Vi IMproved
~
~                                       version 7.1
~                                by Bram Moolenaar et al.
~                       Vim is open source and freely distributable
~
~                              Help poor children in Uganda!
~                     type  :help iccf<Enter>       for information
~
~                     type  :q<Enter>               to exit
~                     type  :help<Enter>  or  <F1>  for on-line help
~                     type  :help version7<Enter>   for version info
~
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E138: Can't write viminfo file /etc/login/.viminfo!
Press ENTER or type command to continue
login> cat README
This is a hurd login shell; it is a normal user shell, but has no user
privileges.  To login as a user with a userid of USER, use the command:

  login USER

other useful commands:

  ql USER       # quick login -- just start a shell in USER's home  
directory
  su USER       # set the id of the current (login) shell to USER
                # (use the `unsu' command to undo this, or just exit  
the shell)
login> telnet
telnet> exit
?Invalid command
telnet> quit
login>

It's quite worrying I can run vi, start telnet, and use ls, and  
navigate the directory tree ...
Michael
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