cquirke (MVP Windows shell/user)

On Tue, 24 Jul 2007 21:06:04 -0700, JasonH

>When I checked "always show icons, never thumbnails" I was able to explore
>the Windows Mail folder without crashing. I deleted the thumbnail cache
>using disc cleanup, as you said, but when I went back and unchecked "always
>show icons," I was back to square one. Now Windows Explorer crashes again
>when I scroll down to the bottom of Program Files, and the Windows Mail file
>folder is inaccessable.

You may have a "bad" file that corrupts whatever is trying to create a
thumbnail out of it - which could turn out to be an exploitable bug,
if the crashing effect can be harnessed to run code within the damaged
file. I've seen this one coming a mile off as a theoretical risk.

I'd need to know more about the thumbnailling process to predict other
possible points of failure, e.g. broken indexing or internal structure
of a location that holds thumbnail material, etc. if applicable.

Well done for tracking it down! If possible, bug this with MS and (if
compatible with your privacy needs) retain the material that causes
the crashes so they can test this further.



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Who is General Failure and
why is he reading my disk?
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