Messages in this thread | | | Subject | Re: One for the Security Guru's | From | James Stevenson <> | Date | 23 Oct 2002 23:15:14 +0100 |
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> The consultants aparantly told the company admins that kernel modules > were a massive security hole and extremely easy targets for root kits. > As a result every machine has a 100% monolithic kernel, some of them > ranging to 1.9Meg in filesize. This of course provides some other > sticky points such as how to do a kernel boot image.
i very much doubt this would stop anyone who really wanted todo something like loading a module.
Stating something like that would also mean booting the kernel from a disk inside the machine is also insecure.
As to load a module you must be root and if you are root you can read / write disks. Thus you could recompile your own kernel install it try to force a crash or a reboot which is not hard as root and the person may not even notice that the kernel has grown by a few bytes after the crash.
The only thing it may do is slow somebody down. A lot of people out there if they can get access to a system and cannot keep it will also tend todo a rm -rfv / or equivelent nasty.
James
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