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Subject: 1.3.12-4: editing /etc/passwd causes ssh to fail
From: Len Giambrone <frodo AT mit DOT edu>
Date: 08 Oct 2002 16:17:47 -0400
Message-ID: <tmlwuos4rdg.fsf@small-gods.mit.edu>
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This is on an installation using setup today with the latest packages on
archive.progeny.net.  It's running Win2k Server.  I think I've also verified
this on my XP HE box at home.

I can happily ssh into my box.

$ ssh Administrator AT foo
Warning: Remote host denied X11 forwarding.
Last login: Tue Oct  8 21:01:53 2002 from bar

Administrator AT LORIEN ~
$ 

Now, I add the user foo:

Administrator AT LORIEN ~
$ net user foo bar /add

I add the user to the password file

Administrator AT LORIEN ~
$ mkpasswd -l -u foo >>/etc/passwd

And now I can't ssh in anymore:

$ ssh Administrator AT foo
Warning: Remote host denied X11 forwarding.
Connection to foo closed.
$ ssh Administrator AT 172 DOT 16 DOT 34 DOT 104
Warning: Remote host denied X11 forwarding.
Connection to 172.16.34.104 closed.
$

If I remove the new user foo, I can once again login:

Administrator AT LORIEN ~
$ rm /etc/passwd; mkpasswd -l | grep -v ^foo >/etc/passwd

$ ssh Administrator AT foo
Warning: Remote host denied X11 forwarding.
Last login: Tue Oct  8 21:18:09 2002 from bar

Administrator AT LORIEN ~
$ 

Has anyone seen this before?  Can someone please confirm or deny that this
happens to them?

                        -Len




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