Georgi Guninski security advisory #28, 2000
IE 5.x/Outlook allows executing arbitrary programs using .chm files and
temporary internet files folder
IE 5.5/Outlook/Outlook Express - probably other versions, have not
Date: 20 October 2000
This Advisory is Copyright (c) 2000 Georgi Guninski. You may distribute
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without the author's
The opinions expressed in this advisory and program are my own and not
of any company.
The usual standard disclaimer applies, especially the fact that Georgi
is not liable for any damages caused by direct or indirect use of the
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Georgi Guninski, bears no responsibility for content or misuse of this
advisory or program or
any derivatives thereof.
There is a security vulnerability in IE 5.5/Outlook/Outlook Express
executing arbitratrary programs using .chm files and revealing the
temporary internet files folder. This may lead to taking full control
over user's computer.
I reported a similar vulnerability regarding .chm files sometime ago and
Microsoft fixed it
by allowing .chm files to run programs only if the .chm was loaded from
the local file system.
But it is possible to find the temporary internet files folder - there
are several folders with
The following HTML code: