Re: [PATCH] tcp: sysctl to disable TCP simultaneous connect

From: Kees Cook
Date: Fri Feb 15 2013 - 01:41:46 EST

On Thu, Feb 14, 2013 at 9:30 PM, Eric W. Biederman
<ebiederm@xxxxxxxxxxxx> wrote:
> Kees Cook <keescook@xxxxxxxxxxxx> writes:
>> The patch would not break it -- it defaults the sysctl to staying enabled.
>> If you mean the documentation should be updated, sure, that's easy to do.
>> David: I know you aren't a fan of this patch, but I'd like to try to
>> convince you. :) This leaves the feature enabled and add a toggle for
>> systems (like Chrome OS) that don't want to risk this DoS at all.
>> There are so very many other toggle, I don't see why this one would be
>> a problem to add.
> Chrome OS has no plans to implement webrtc? Last I had read that
> support had been added to the release versions of Chrome, and was in the
> development builds of firefox. I really don't belive that there are
> many systems that don't intend to run a web browser.

I haven't looked at the internals of webrtc. Are you implying some
feature in it relies on the TCP simultaneous connect?


Kees Cook
Chrome OS Security
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