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- Newsgroups: comp.sys.amiga.advocacy
- Path: sparky!uunet!gatech!news.byu.edu!hamblin.math.byu.edu!sol.ctr.columbia.edu!hemi!jerry
- From: jerry@msi.com (Jerry Shekhel)
- Subject: Re: Future Amiga chipsets
- References: <38124@cbmvax.commodore.com>
- Sender: nobody@ctr.columbia.edu
- Organization: Molecular Simulations, Inc.
- Date: Wed, 23 Dec 1992 17:50:21 GMT
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- Message-ID: <1992Dec23.175021.18816@sol.ctr.columbia.edu>
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- Lines: 52
-
- Joe O'Hara - Product Assurance (joe@cbmvax.commodore.com) wrote:
- :
- : >I'm going to go out on a limb here, and say that there is *no way* to write
- : >directly to the disk sectors under OS/2, except from a device driver. Also,
- : >although an OS/2 program can freely erase important files from the (local)
- : >disk, the really crucial stuff (kernel, shared libs, drivers) is still
- : >protected agaomst modification and erasure.
- :
- : So, let's see. A virus can write itself to the disk as a driver, overwriting
- : the real one. Rebooting the system will then bring in the bogus driver.
- :
-
- I suppose so, but writing a driver is a bit more difficult than writing this:
-
- while(1)
- poke(rand(), rand());
-
- :
- : Or... A virus can read a shared library as a file, modify it, and rewrite it.
- :
-
- Nope. Shared libraries cannot be modified while they are in use. That's why
- you have to boot OS/2 from a floppy in order to change the display driver
- (it's a shared library used by the GUI).
-
- :
- : Or... A virus can likewise modify an ini file.
- :
-
- As far as I know, this is also impossible.
-
- :
- : Or... A virus can likewise modify cmd.exe
- :
-
- Can't do that either (as long a there's at least one cmd.exe running
- somewhere.
-
- Look, this is a useless argument. Yes, it's possible to create a virus
- for OS/2 -- it is clearly not protected as well as a multi-user system.
- If you're trying to say that memory protection has no place in a single-user
- system, well, that's a different argument entirely.
-
- :
- : Joe O'Hara || Disclaimer: I didn't say that!
- :
- --
- +-------------------+----------------------------+---------------------------+
- | JERRY J. SHEKHEL | Molecular Simulations Inc. | Time just fades the pages |
- | Drummers do it... | Burlington, MA USA | in my book of memories. |
- | ... In rhythm! | jerry@msi.com | -- Guns N' Roses |
- +-------------------+----------------------------+---------------------------+
-