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Date: Wed, 26 Nov 2014 21:01:09 +0100
From: Hanno Böck <>
Subject: Re: Apple goto fail - lessons that should be learned

On Wed, 26 Nov 2014 12:34:15 -0500 (EST)
"David A. Wheeler" <> wrote:

> I've previously done this exercise with:
> * Heartbleed:
> * Shellshock:

I've written something similar on POODLE (and BERserk), not sure if I
posted this here before:,-POODLEs-and-other-tales-from-TLS.html

Not surprisingly I come to somewhat similar conclusions (protocol
downgrade protection, encrypt-then-mac etc.)
BERserk has somewhat similar problems, e.g. it's basically also a "we
don't deprecate weak/old crypto" (PKCS #1 1.5 and RSA with e=3).

But the most important conclusion from POODLE is imho: Be very careful
with implementing workarounds for broken hard/software - and don't do
them if they compromise security.

Hanno Böck


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