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- Newsgroups: comp.security.misc
- Path: sparky!uunet!math.fu-berlin.de!news.netmbx.de!Germany.EU.net!rzsun2.informatik.uni-hamburg.de!fbihh!bontchev
- From: bontchev@fbihh.informatik.uni-hamburg.de (Vesselin Bontchev)
- Subject: Re: Future OS virus immunity.
- Message-ID: <bontchev.725824097@fbihh>
- Sender: news@informatik.uni-hamburg.de (Mr. News)
- Reply-To: bontchev@fbihh.informatik.uni-hamburg.de
- Organization: Virus Test Center, University of Hamburg
- References: <eronald.725752239@ruble> <1hv07gINN3mn@rave.larc.nasa.gov> <bontchev.725813879@fbihh> <1hv7goINN6sp@rave.larc.nasa.gov>
- Date: 31 Dec 92 17:48:17 GMT
- Lines: 45
-
- kludge@grissom.larc.nasa.gov (Scott Dorsey) writes:
-
- > Actually, I wouldn't consider Unix to be typical either. Yes, it's
-
- Well, my example supposed that the protection in Unix actually works
- and that there are no security bugs... After all, it was just a
- theoretical example... :-)
-
- > possible for a user to infect his own personal executable, then share
- > that executable with another user who then gets his own executables
- > infected. True enough. But, it's not possible for them to infect
- > the operating system unless one of those user executables is run by
- > an account with permissions (which should never happen). The chances
- > to spread are greatly reduced, and the chances of mass spread through
- > the operating system are eliminated.
-
- This is exactly what I said. The "operating system executables" are
- just owned by one of the users. Therefore, infecting them is just as
- easy (or just as difficult) as infecting another user. The virus has
- to be executed by someone with the proper privileges (the owner of the
- files or somebody with higher privileges). And the reduced spread is a
- result exactly of the reduced sharing...
-
- > >source code. You do not walk around with infected tapes and do not run
- > >the programs on them on different machines, as you do in the PC world.
- > >That's why, in multi-user systems the worms and the trojans are of
- > >much more concern than the usual viruses.
-
- > This is the case with current Unix systems, but it may not always be the
- > case, unfortunately.
-
- Dunno... Once people switch to real operating systems, the viruses
- will stop using silly hacks as they are doing now. They will become
- better behaved, if they want to spread. But I still doubt that in the
- future users will share executables more often than now... Of course,
- in this case we might see viruses that cary multiple segments of code,
- for most popular platforms - like the Morris worm did...
-
- Regards,
- Vesselin
- --
- Vesselin Vladimirov Bontchev Virus Test Center, University of Hamburg
- Tel.:+49-40-54715-224, Fax: +49-40-54715-226 Fachbereich Informatik - AGN
- < PGP 2.1 public key available on request. > Vogt-Koelln-Strasse 30, rm. 107 C
- e-mail: bontchev@fbihh.informatik.uni-hamburg.de D-2000 Hamburg 54, Germany
-