full-disclosure - Operating Systems Security, "Microsoft Security, baby steps"

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Message-ID: <1079705721.6858.83.camel@flybynight>
From: lscharf at aoe.vt.edu (Luke Scharf)
Subject: Operating Systems Security, "Microsoft
	Security, baby steps"

On Fri, 2004-03-19 at 01:49, Todd Burroughs wrote:
> Wasn't that something that MS tried to say, the "hackers" are reverse
> engineering our patches?  That was funny, but the sad thing is that a
> lot of people will believe it.

I have no doubt that people reverse engineer their patches.

However, saying "hackers ONLY reverse engineer our patches" is a lot
different from saying "one possible technique for abusing a Windows
system is to look for problems by reverse engineering out patches."

Biiiiiiig difference.  Driving while sloshed is one possible way to get
hurt while driving a car, but certainly not the only way.

> What I meant is that you can most likely actually use the Internet to get
> patches with a fresh install before you get taken over, not that somehow
> UNIX-like systems make patches before the exploits are out there and being
> used ;-)  It's quite apparent by other threads on the list that this is
> not generally the case with Windows.  Just being patched doesn't mean
> that you are safe, but it's better than running well known security holes.

For the last couple of years (maybe longer?) RedHat Linux (and recently
Fedora) have been shipping with a built-in firewall that enabled by
default.

If you don't know it's there, the it should certainly be enabled!  :-) 
And if you decide to turn it off, you have to at least justify the
effort to run /usr/sbin/lokkit.

I hear that some BSD's do something similar.

> Obviously, if you go on the Net with all services running, especially
> on an unpatched box, you're gonna get rooted pretty quickly.

Yup.  Last I checked, Sun does it this way...  Yay!  Fortunately,
they're a smaller target, and ppro is decent.  But, it still takes me a
few minutes to turn off all of the unnecessary stuff before I can begin
the real work of setting up a useful system (and re-enabling anything
that I actually need).

-Luke

-- 
Luke Scharf, Systems Administrator
Virginia Tech Aerospace and Ocean Engineering