Bugtraq mailing list archives

Re: RAS 'save password' problems...


From: dleblanc () MINDSPRING COM (David LeBlanc)
Date: Mon, 23 Mar 1998 00:04:13 -0500


At 11:19 AM 3/20/98 -0600, Aleph One wrote:
---------- Forwarded message ----------
Date: Thu, 19 Mar 1998 14:09:44 -0800
From: martin Dolphin <mdolphin () POBOX COM>
To: NTBUGTRAQ () LISTSERV NTBUGTRAQ COM
Subject: RAS 'save password' problems...

THE PROBLEM:
Windows NT allows users to save their RAS credentials by using the 'Save
Password' checkbox when making a dial-up connection. Credentials saved in
this manner are stored in the
HKEY_LOCAL_MACHINE\SECURITY\Policy\Secrets\RasCredentials!SID#0 registry
key.  These credentials can be enumerated using the LSA secrets code.  (As
identified by Paul Ashton in a prior submission to NTBugtraq)

There are also a number of entries corresponding to previous logins by
users.  There is a way to turn this behavior off, but I don't recall at the
moment exactly what it is.

Essentially, it is there to allow you to log on if the domain controller
can't be reached.  I believe it stores hashes rather than clear-text.

The RAS functionality can often be annoying as well - it tends to prompt me
for my password even when I'm using a script (which of course contains the
user-password pair in the clear).  Not sure why it thinks it needs it - I
just leave it blank, but a less astute user would probably type in their
actual password.


David LeBlanc           |Why would you want to have your desktop user,
dleblanc () mindspring com |your mere mortals, messing around with a 32-bit
                        |minicomputer-class computing environment?
                        |Scott McNealy



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