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[Full-disclosure] hidden users on windows?
From: nabiy (nathan.aguirregmail.com)
Date: Wed Aug 03 2005 - 09:13:01 CDT
A security issue has been identified in current versions of windows
that allows 'hidden' user accounts. The User Account Manager in the
Windows Control Panel and the 'Welcome Screen' both fail to report
interactive logons made with the netapi. This security issue has been
verified on Windows 2000 Professional, Windows XP Home Edition and
Windows XP Professional. Microsoft was notified of this issue on July
28, 2005. The problem is not with the netapi or the ability to create
users but with the User Account Manager in Windows. It simply fails to
list all of the users that are on the system.
This issue was noticed while exploring the netapi on windows – users
created with the netuseradd function failed to show up in both the
User Account Manager and on the Welcome Screen. The failure to list
users made with the netapi presents a problem for obvious reasons;
home users and even administrators expect to see all of the users on
their system when using these facilities.
The solution in all versions of windows is simple. Do not depend on
the User Account Manager when managing user accounts on your system.
Instead, users should use the Local Users and Groups management snapin
or the net command from the cli.
More information has been documented at http://neworder.box.sk
http://nabiy.sdf1.org . gopher://sdf.lonestar.org/11/users/nabiy
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