About a year ago I came across this same issue. I came across it while messing with Solar Designer's old Netscape JPEG bug. So, in short the same issue applies to WinXP it seems. I showed the bug to a few people (even contacted Microsoft, but got no reply), but neither them nor myself ever got around to figuring it out. Nick DeBaggis and eEye did a good job of figuring this very dangerous issue out :) Anyway, the point to this post is to release the POC I just put together using the findings that I have been sitting on for quite some time. As I said before, I never fully understood exactly what was going on, so this POC doesn't execute code or anything, but it will crash any WindowsXP machine that has not been patched from this flaw. If you cannot access the attached file, you may download the POC here http://www.gulftech.org/?node=downloads BTW: There was a BugTraq (or some other sec mailing list) post from over a year ago that talks about the Netscape JPEG issue crashing the WindowsXP Shell. I remember seeing them when I first started looking into this issue, but do not have links right off hand. Maybe someone else reading this does?
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