Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ames!haven!decuac!e2big.mko.dec.com!bacchus.pa.dec.com!decwrl!sdd.hp.com!zaphod.mps.ohio-state.edu!rpi!uupsi!ccavax!merriman From: merriman@ccavax.camb.com Newsgroups: comp.lang.c Subject: Re: Crash a RISC machine from user-mode code: Message-ID: <30273.26c33972@ccavax.camb.com> Date: 10 Aug 90 22:47:14 EDT References: <1826@mountn.dec.com> <49041@seismo.CSS.GOV> Organization: Cambridge Computer Associates, Inc. Lines: 20 In article <49041@seismo.CSS.GOV>, stead@beno.CSS.GOV (Richard Stead) writes: [stuff deleted] > Who could possibly care > that a random instruction sequence crashes a risc box? Some villain wanting to mount a denial-of-service attack. And if certain strange instruction sequences can bypass the operating system and hardware protections which are supposed to prevent this sort of thing, perhaps there are other sequences which will do even more insidious things, like allow a guest account to become superuser. Remember the Internet Worm. [more stuff deleted] > > Richard Stead > stead@seismo.css.gov George Merriman (I hope my bank does not use unix to keep track of MY money!)