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adv-desktopini.txt

adv-desktopini.txt
Posted May 19, 2004
Authored by Roozbeh Afrasiabi

Certain system folders on Microsoft Windows XP are created referencing the shellclassinfo in desktop.ini, allowing for executables to be masked as elsewise.

tags | advisory
systems | windows
SHA-256 | a4456c08095c611bdcec5b288f26f62db8ddb5844e28427b806218b0eb3b2218

adv-desktopini.txt

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advisory#4
/--------------------------------------------------------------------/


Vendor: Microsoft Corp.
product: windows (only tested on winxp.pro.ed)
test machine: win.xp.pro.ed ie.6 (fully patched)
Discovery by: Roozbeh Afrasiabi
[roozbeh_afrasiabi(At)yahoo(dot)com]
Risk: med
Title: Desktop.ini flaw results in executing
folders

/--------------------------------------------------------------------/









TABLE OF CONTENTS:
==================

Description..............................................1

Exploit..................................................2

Contact info.............................................3

Disclaimer...............................................4










1)Description:
==================



Certain system folders on windows(XP) are created using desktop.ini by
use of their CLSIDs , this is done by setting the CLSID value of the
shellclassinfo in desktop.ini to their assigned CLSIDs , however there
is no restriction to what CLSIDs are safe and can be used, this could
bring up security issues when CLSIDs that point to executables are set
as the CLSID value.
This vulnerability effects IEXPLORE.EXE and EXPLORER.exe and may result
in execution of malicious code in the context of the currently logged
in user.


2)Exploit
===========



http://www.freewebs.com/roozbeh_afrasiabi/xploit/execute.htm





3)Contact Info
==================

roozbeh_afrasiabi(at)yahoo(dot)com
da_stone_cold_killer(at)yahoo(dot)com
me@persia-fars-shiraz

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4)Disclaimer
==================


Roozbeh Afrasiabi is not responsible for the misuse of the information provided in this report. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this advisory. Any use of the information is at the user's own risk.





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