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Date: Tue, 7 Apr 2015 13:35:48 -0700
From: Seth Arnold <>
Subject: Re: Hanno Boeck found Heartbleed using afl + ASan!

On Tue, Apr 07, 2015 at 01:27:40PM -0700, Michal Zalewski wrote:
> this or any comparably serious find. Today, I'm asking myself the same
> question about AFL. Was it too counterintuitive to set this up? Were
> there other barriers to entry? Can I fix this now?

Hanno's trick of storing TLS packets as files is clever, but doesn't
scale far beyond testing handshakes of a handful of protocols, and that
with some effort.

If AFL could grow the ability to mangle socket-based inputs, it would
probably be more applicable to many more services, and beyond just

I realize it's asking for a unicorn when we've already been given a pony,
but there it is.


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