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Date: Tue, 07 Oct 2014 07:59:05 -0400
From: "David A. Wheeler" <>
To:,Hanno Böck <>
Subject: Re: Thoughts on Shellshock and beyond

> * Heartbleed is an out of bounds memory read. Well understood and yes,
  it should be possible to implement mitigations against these kinds of

It is not only possible, I have already posted a list of ways to find Heartbleed:

I think identifying specific ways to counter classes of vulnerabilities is really important.

> What class of bug is Shellshock? "Weird feature invented in
  pre-Internet era"? How do you conquer this class of bugs?

I am still struggling with this one.  I am trying to create that list here:

But to be honest, that list is pretty pathetic. This is a challenging class of vulnerability to detect or prevent ahead of time. Ideas would be very welcome.

--- David A.Wheeler

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