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Message-ID: <543E6482.80404@redhat.com>
Date: Wed, 15 Oct 2014 14:11:46 +0200
From: Jan Rusnacko <jrusnack@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE assignment for POODLE
On 15.10.2014 11:48, Florian Weimer wrote:
> CVE-2014-3566 is currently assigned to an SSL 3.0 protocol vulnerability:
>
> “The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue.”
>
> What we seem to be lacking is a CVE assignment for the protocol downgrade “dance” implemented by some browsers, explicitly designed to negate the effect of the downgrade protection in the TLS protocol (the protocol upgrade to TLS 1.0 and beyond is arguably the “fix” for CVE-2014-3566 as it is described above).
There already might be a confusion from how this is presented in relation to Poodle, e.g (http://marc.info/?l=openssl-dev&m=141333049205629&w=2):
"Here's a patch for the OpenSSL 1.0.1 branch that adds support for
TLS_FALLBACK_SCSV, which can be used to counter the POODLE attack"
when in fact TLS_FALLBACK_SCSV is a fix for downgrade dance. Additional CVE will help tracking these two issues and their fixes separately.
--
Jan Rusnacko, Red Hat Product Security
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