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Re: [Full-disclosure] Root password change

from [Valdis . Kletnieks] Network Security [Permanent Link]
Subject: Re: [Full-disclosure] Root password change
Date: Fri, 31 Mar 2006 12:20:06 -0500 
On Fri, 31 Mar 2006 09:21:13 EST, Michael Holstein said:

Trivial to defeat.  Just boot in to single user mode with these kernel
options:
    single init=/bin/bash


Again .. only due to initial misconfiguration.

Nobody should allow alternate switches to be passed to the kernel at 
boot .. either by password-protecting the bootloader, or via firmware 
(as with OpenBoot).


Of course, if you're that paranoid, you *did* configure whatever the machine
uses for a BIOS to only boot off the intended hard drive, right? ;)

(It's amazing how many boxes I've found that forget that step, so a CD and 
enough
time to hit the RESET button are enough to get you in. And if you have any 
smarts
at all, you don't even need to hang around at the console after you hit reset.
It's not that hard to get a Knoppix to start an sshd. :)

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