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RE: SSL crack in the news
From: "St. Clair, James" <JStClair () vredenburg com>
Date: Sat, 22 Feb 2003 17:33:37 -0500


 Yeah, CNN screwed up the story more than they releaed anything..

Jim

-----Original Message-----
From: Matt Zimmerman
To: nanog () merit edu
Sent: 2/22/03 5:13 PM
Subject: Re: SSL crack in the news


On Sat, Feb 22, 2003 at 03:55:14PM -0500, Mark Radabaugh wrote:


http://www.cnn.com/2003/TECH/internet/02/21/email.encryption.reut/index.
html

Very little real information...

Sounds like a CNN-digested version of CAN-2003-0078, which is a
(relatively
minor) bug in OpenSSL which allows for a timing attack.

OpenSSL CHANGES file:
*) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
     via timing by performing a MAC computation even if incorrrect
     block cipher padding has been found.  This is a countermeasure
     against active attacks where the attacker has to distinguish
     between bad padding and a MAC verification error. (CAN-2003-0078)

     [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
     Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
     Martin Vuagnoux (EPFL, Ilion)]

CNN:
NEW YORK (Reuters) -- Researchers at a Swiss university have cracked the
technology used to keep people from eavesdropping on e-mail sent over
the
Web...

Typical.

-- 
 - mdz


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