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[Full-disclosure] Internet Explorer 0day exploit

From: Thor Larholm (seclistslarholm.com)
Date: Tue Jul 10 2007 - 00:09:23 CDT

There is a URL protocol handler command injection vulnerability in
Internet Explorer for Windows that allows you to execute shell commands
with arbitrary arguments. This vulnerability can be triggered without
user interaction simply by visiting a webpage.

When Internet Explorer encounters a reference to content inside a
registered URL protocol handler scheme it calls ShellExecute with the
EXE image path and passes the entire request URI without any input
validation. For the sake of demonstration I have constructed an exploit
that bounces through Firefox via the FirefoxURL protocol handler. The
full advisory and a working Proof of Concept exploit can be found at


Thor Larholm

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