Hi there,
I was playing around with shortcuts today and I found what appears to be a
potentially malicious bug in Windows XP. It seems when two (modified)
Shortcuts (.LNKs) are pointing to each other, when Windows attempts to assign
one an icon Explorer closes and restarts. If the shortcuts are placed on the
Desktop then when Explorer restarts, the bug is triggered again, starting the
whole process over again. This also occurs after a reboot and when in Safe
Mode. My main concern is that if a user with malicious intent used this to
harm an incompetant user, the victim would most likely not be able to resolve
the problem. The looping can be ended by either killing Explorer.exe or by
deleting one of the shortcuts in the chain (both quite difficult when
Explorer is restarting every second or 2). I have created a PoC which will
work on the current user's Desktop. Just ask for a copy if you'd like to try
it.
Thanks,
Andy Bearman
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