DOCUMENT:Q214802
TITLE   :WinNT Lets You Paste Text into Unlock Workstation Dialog Box
PRODUCT :Windows NT; Windows NT, Terminal Server Edition
PROD/VER:4.0
OPER/SYS:WINDOWS NT
KEYWORD :kbbug4.00 kbfix4.00 

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The information in this article applies to:

 - Microsoft Windows NT Server, Enterprise Edition version 4.0 
 - Microsoft Windows NT Workstation versions 3.51, 4.0 
 - Microsoft Windows NT Server versions 3.51, 4.0 
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SYMPTOMS
========

A problem in Windows NT enables someone with physical access to the console of a
Windows NT system where a user is currently logged on and the console is locked
to retrieve the first line of text from the logged on user's clipboard. This is
done by pasting (pressing CTRL+V) the clipboard contents into the User name
field of the Unlock Workstation dialog box. Microsoft has not received any
reports of adverse effects as a result of this issue.

Terminal Server connections are not impacted by this bug, although the Terminal
Server console would be.

RESOLUTION
==========

Windows NT 4.0
--------------

A supported fix that corrects this problem is now available from Microsoft, but
has not been fully regression tested and should be applied only to systems
determined to be at risk of attack. Please evaluate your system's physical
accessibility, network and Internet connectivity, and other factors to determine
the degree of risk to your system. If your system is sufficiently at risk,
Microsoft recommends you apply this fix. Otherwise, wait for the next Windows NT
4.0 or Windows NT Server 4.0, Terminal Server Edition service pack that contain
this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information on support costs, please go to the following
address on the World Wide Web:

   http://support.microsoft.com/support/supportnet/default.asp

The version of this fix should have the following file attributes or later:

   Date      Time                 Size    File Name     Platform
   -------------------------------------------------------------
   02/12/99  04:16p               125,200 Msgina.dll    (x86)
   02/12/99  04:16p               160,528 Msgina.dll    (Alpha)

Windows NT 4.0 with Service Pack 4:

This hotfix has been posted to the following Internet location:

   ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/chp/NT40/
   hotfixes-postSP4/Gina-fix/

NOTE: If this product was already installed on your computer when you purchased
it from the Original Equipment Manufacturer (OEM) and you need this fix, please
call the Pay Per Incident number listed on the above Web site. If you contact
Microsoft to obtain this fix, a fee may be charged. This fee is refundable if it
is determined that you only require the fix you requested. However, this fee is
non-refundable if you request additional technical support, if your no-charge
technical support period has expired, or if you are not eligible for standard
no-charge technical support.

For more information about eligibility for no-charge technical support, see the
following article in the Microsoft Knowledge Base:

   Q154871 Determining If You Are Eligible for No-Charge Technical Support

Windows NT 3.51
---------------

A hotfix is not available for Windows NT 3.51.

STATUS
======

Microsoft has confirmed this problem could result in some degree of security
vulnerability in Windows NT versions 3.51 and 4.0 and Windows NT Server 4.0,
Terminal Server Edition.

MORE INFORMATION
================

Gina-fix also resolves the problem discussed in the following article in the
Microsoft Knowledge Base:

   Q188700 Screensaver Password Works Even if Account Is Locked Out

Additional query words: 3.51 4.00 sp1 sp2 sp3 sp4 tse wts
============================================================================

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