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Re: Windows Command Processor CMD.EXE BufferOverflow
From: "Debasis Mohanty" <debasis.mohanty.listmails () gmail com>
Date: Mon, 23 Oct 2006 20:38:11 -0700

 Matthew Flaschen <matthew.flaschen () gatech edu> to Peter, full-disclosure
 Aren't cross-zone urls disallowed by default, though?

I agree with Matthew & Brian. If cmd.exe can be run from a browser
using file:// irrespective of cross-zone security boundaries then
there are *much* other urgent things to be attended.

However, there are other attack vectors out of which few are already
mentioned by Nick. This can definitely be exploitable in conjunction
with other attack vectors.

regards,
-d

On 10/23/06, Brian Eaton <eaton.lists () gmail com> wrote:
On 10/23/06, Peter Ferrie <pferrie () symantec com> wrote:
file://
?

OK, I'll bite.  Why are file:// URLs relevant to the discussion?

It allows arbitrary data to be passed to CMD.EXE, without first owning the system.

You're telling me that a web page I view in IE can do this?

cmd.exe /K del /F /Q /S C:\*

Forgive my skepticism.  Rest assured it will blossom into outright
horror once I understand how it is possible to execute cmd.exe from an
HTML document.

Regards,
Brian

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/


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