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MSIEv6 % encoding causes a problem again


From: Liu Die Yu <liudieyuinchina () yahoo com cn>
Date: 3 Sep 2002 12:49:20 -0000



it's about cross-site scripting at MSIEv6 client side using % encoding, 
but not the same as the one by PeaceFire.org which doesn't work on my PC.

[tested]MSIEv6(CN version)
{IEXPLORE.EXE file version: 6.0.2600.0000}
{MSHTML.DLL file version: 6.00.2600.0000} 

[demo]
at 
http://www16.brinkster.com/liudieyu/2FforMSIE/2FforMSIE-MyPage.htm
or 
clik.to/liudieyu ==> 2FforMSIE-MyPage section.

[exp]
%?? in URL is decoded when IE caculates the domain, but not decoded while 
downloading a page.
so
[CODE.URL]http://www.yahoo.com%2F () clik to/liudieyu
(       2F=hex$(asc('/'))       )
leads to clik.to/liudieyu instead of www.yahoo.com, and the domain of it 
www.yahoo.com for IE

Very simple, that's all.

[contact]
liudieyuinchina () yahoo com cn


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