Messages in this thread |  | | Date | Sun, 19 Nov 2000 10:45:15 -0500 (EST) | From | Alexander Viro <> | Subject | Re: BTTV detection broken in 2.4.0-test11-pre5 |
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On Sun, 19 Nov 2000, Christer Weinigel wrote:
> In article <Pine.LNX.4.30.0011190710440.13087-100000@anime.net> you write: > >On Sun, 19 Nov 2000, Alexander Viro wrote: > >> On Sun, 19 Nov 2000, David Lang wrote: > >> > there is a rootkit kernel module out there that, if loaded onto your > >> > system, can make it almost impossible to detect that your system has been > >> > compramised. with module support disabled this isn't possible. > >> Yes, it is. Easily. If you've got root you can modify the kernel image and > >> reboot the bloody thing. And no, marking it immutable will not help. Open > >> the raw device and modify relevant blocks. > > > >Kernel on writeprotected floppy disk...
Cute. And when (not if) we get hit by new bug in the net/*/* you will drive to the location of said router to upgrade the thing. > So change the CMOS-settings so that the BIOS changes the boot order > from A, C, CD-ROM to C first instead. *grin* How long do you want > to keep playing Tic-Tac-Toe?
Now, _that_ can be taken care of (custom boot code burnt into the thing)
> Of course, using capabilities and totally disabling access to the raw > disk devices and to any I/O ports might be the solution, provided that > there are no bugs or thinkos in the capabilities code.
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