Bugtraq post van 28 maart
http://www.securityfocus.com/archive/1/358913/2004-03-28/2004-04-03/01)Description:
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There exists a security issue with the way the ms-its(its) and
mk:@MSITStore:protocol
handlers become available to internet explorer after *.chm files that are
functional outside help and support center are initiated using showhelp() ,
when this happens internet explorer is capable of accessing thosefiles
using ms-
its(its) or mk:@MSITStore: protocol handlers , the nature of these files
makes
this matter dangerous to the users . The pages that becomeavailable to IE
using
ms-its or mk:@MSITStore: p-handlers are only those thatof the chm file
opened
using showhelp() however this can be bypassed using the restriction
bypass
vulnerability previously reported by Arman Nayyeri.
I must point out that the ms-its: and mk:@MSITStore: protocol handlers are
also available
to IE when no chm file has been opened but to access these filesthe path
to the target chm file must be used which is why the restriction Bypass
vulnerability
is possible.