Bugtraq mailing list archives
Re: BoS: amodload.tar.gz - dynamic SunOS modules
From: Piete.Brooks () cl cam ac uk (Piete Brooks)
Date: Fri, 21 Jun 1996 06:37:25 +0100
StunOS mount only wants to write to /etc to update the mnttab file. If you mount all the disks that you have when the partition is writable, halt the system and then write protect the disk mount will whine about not being able to update things but will still do the mount.
Hmm -- as I remember it from times of stress mending broken systems (so the old grey cells may not be all that reliable!), if / was r/o, mounts FAILED, unless the "-n" flag was set: -n Mount the file system without making an entry in /etc/mtab. [[ PS: Sean said "Why? If an attacker can alter your system binaries, s/he must have root privileges. Which means s/he can also unmount the filesystems and remount them read-write." It's not quite that simple, as at least some of the F/Ss *can't* be unmounted over the net, as they will be in use. However, now that many O/Ses start off with / and /usr mounted ro until they have been fscked, they tend to have a "-u", or "-o remount" to do it without the (impossible) umount ... ]]
Current thread:
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Christopher Klaus (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Dana Bourgeois (Jun 20)
- <Possible follow-ups>
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Dan Stromberg (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules der Mouse (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Markus Zellner (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Brian Denehy (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Brett Lymn (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Piete Brooks (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Brett Lymn (Jun 21)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Markus Zellner (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Dave Matthews (Jun 20)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Dan Stromberg (Jun 21)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules Dan Stromberg (Jun 21)
- Re: BoS: amodload.tar.gz - dynamic SunOS modules J.R.Valverde (Jun 24)