bugtraq - Re: Strengthen OpenSSH security?

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Date: Wed, 19 Apr 2006 20:28:38 -0700
From: Carson Gaspar <carson@...tos.org>
To: bugtraq@...urityfocus.com
Subject: Re: Strengthen OpenSSH security?

--On Monday, April 17, 2006 10:31 PM -0600 Brett Glass <brett@...iat.org> 
wrote:

> It seems to me that sshd should not tip its hand by returning different
> responses when a user ID can be used for logins than when it can't --
> allowing an attacker to focus password guessing attacks on user IDs with
> which it would have a chance of gaining access. For those folks out there
> who are more familiar with OpenSSH than I am: How hard would it be to
> make the responses indistinguishable?

Are you running the latest version of portable OpenSSH? If not, you need to 
upgrade. As far as I know, there should be no more leaks of this sort in 
the current code. If there are, please notify the openssh developers (and 
include your authentication configuration - your PAM modules may be leaking 
the info, and there's nothing OpenSSH can do about that).

-- 
Carson