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BugTraq
Default Screen Saver Vulnerability in Microsoft Windows May 21 2006 09:07AM susam pal gmail com (2 replies) Re: Default Screen Saver Vulnerability in Microsoft Windows May 24 2006 06:52PM Ansgar -59cobalt- Wiechers (bugtraq planetcobalt net) (1 replies) Re: Default Screen Saver Vulnerability in Microsoft Windows May 24 2006 06:43PM Eliah Kagan (degeneracypressure gmail com) |
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Privacy Statement |
> To be able to write to this registry key or to %SystemRoot%\system32
> administrative or system privileges are required. Why do you believe
> this to be a vulnerability?
To the best of my recollection, this is actually an issue on NT4. In the
event that you opt not to install the screen savers during installation, a
normal user is able to create ``logon.scr'' in ``%systemroot%\system32'',
as the default permissions on this directory include Everyone:Change. This
facilitates local privilege escalation from a normal user to LocalSystem.
At least, that's how I remember it working. I think I mentioned this to
Microsoft around 5 years ago, but they didn't consider it to be a problem.
J.
--
Jason V. Miller, Threat Analyst
Symantec, Inc. - www.symantec.com
E-Mail: jmiller (at) securityfocus (dot) com [email concealed]
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