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Date:      Tue, 04 Apr 2000 12:25:30 +0200
From:      Sheldon Hearn <sheldonh@uunet.co.za>
To:        Bob Johnson <bobj@atlantic.net>
Cc:        questions@FreeBSD.ORG
Subject:   Re: 3.4-R telnetd doesn't prompt for password on bad user id 
Message-ID:  <87113.954843930@axl.ops.uunet.co.za>
In-Reply-To: Your message of "Mon, 03 Apr 2000 22:30:04 -0400." <3.0.6.32.20000403223004.009bbb50@rio.atlantic.net> 

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On Mon, 03 Apr 2000 22:30:04 -0400, Bob Johnson wrote:

> Two of them are 3.4-RELEASE Mon Dec 20 1999.  If I telnet to either of 
> them, it does not prompt for a password if I enter an invalid user id: 
> it simply prints "Login incorrect" and displays the login prompt again.
> This allows a bored attacker to try logins until he hits a valid userid.

Weird.  I'm using 5.0-CURRENT and I don't see this.  Two things come to
mind, though:

1) Are you _sure_ you're using the stock /usr/libexec/telnetd ?
2) Are you perhaps using Kerberized telnet?

Ciao,
Sheldon.


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