full-disclosure - Is Marty Lying?

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Message-ID: <20030923144721.GB1563@dreams.soze.net>
From: justin-fulldisclosure at soze.net (Justin)
Subject: Is Marty Lying?

Florin Andrei (2003-09-22 23:25Z) wrote:

> On Mon, 2003-09-22 at 14:13, security snot wrote:
> > "Detect intrusions" - if you can set an IDS signature for something, then
> > you shouldn't be vulnerable to it.  So the functionality of IDS is to tell
> > you when you've been compromised by six-month old public vulnerabilities
> > that dvdman has finally gotten his hands on an exploit for, that you never
> > bothered to patch for?
> 
> True, in an ideal world.
> However, in the _real_ one, things are slightly different. Especially on
> large networks (> thousands of systems), funny things start to happen.

Not even true in the ideal world.  You can add IDS sigs for symptoms of
breakins (e.g. shellcode) rather than vuln-specific signatures.  But
perhaps security snot has some magical cure for every possible
unidentified remote security flaw?

-- 
No man is clever enough to          Times are bad.  Children no longer
know all the evil he does.          obey their parents, and everyone
-Francois de la Rochefoucauld       is writing a book.  -Cicero