RE: how often do 0-days REALLY happen?

["Ofir Arkin" <ofir () sys-security com>]

Leon,

Sometimes you "get lucky" and being hit by a 0-day. We had a similar
case with the Honeynet project were a "fresh" worm hit one of our
honeypots (http://project.honeynet.org).

Usually a 0-day will be shared among a small group of people (1-some)
that will wish to save the ability to make harm with it as long as they
can. Not mentioning other powers they might have possessing it.

The usage of the 0-day will be dependent on the harm it might cause and
the targets it might be lunched against. 


BTW - the one you forgot to mention is Mike Schiffman the author of the
book
(http://www.amazon.com/exec/obidos/ASIN/0072193840/qid=1010555933/sr=8-1
/ref=sr_8_3_1/107-6413282-0312523).


Ofir Arkin [ofir () sys-security com]
The Sys-Security Group
http://www.sys-security.com
PGP CC2C BE53 12C6 C9F2 87B1 B8C6 0DFA CF2D D360 43FA 

-----Original Message-----
From: leon [mailto:leon () inyc com] 
Sent: ג 08 ינואר 2002 23:54
To: incidents () securityfocus com
Subject: how often do 0-days REALLY happen?

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Hi everyone,

I have been reading this list for a couple of years now and I just
got done reading hacker's challenge.  Great book (hi to everyone who
contributed and reads this list, I know David D is one of them).  The
book is quite unique in how it goes about presenting itself. 
Basically it is 20 challenges (here is what happened, here are the
logs, and here are some questions).  At the end of the book are the
solutions (how a security professional figured out xy and most
importantly z).  The reason I wrote the subject heading as I did is
because throughout the book they show case after case of remote
exploit all for vulns that are months old.  On this list and the sec
basics I constantly (relative I know) hear people talking about being
compromised by vulns that patches have been available for, for
months.  So I ask upon you incidents list (ye who have SO MUCH more
experience then I) do systems being compromised by zero day exploits
really happen (I am sure they happen but I am really curious as to
the frequency and how a professional goes about dealing with a never
seen before exploit.)  Just figured I would throw that out there and
see how everyone responds because I was thinking about it on the walk
home (hey, shoot me, it is cold in nyc, gotta do something to keep
from freezing). 

Cheers & TIA,

Leon

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