Security Basics mailing list archives

Re: SSL and TCP RST/SYN attack


From: Shreyas Zare <shreyas () technitium com>
Date: Wed, 23 Sep 2009 21:23:44 +0530

Hi,

If an attacker is able to reset TCP connection then that would affect
all the protocols which use TCP for transport. So it has nothing to do
with SSL. There is no problem in SSL, it is only using TCP for
transport service.

Regards,

On Sun, Sep 20, 2009 at 9:59 PM, David Zhang <david.zhang1965 () gmail com> wrote:

Hi all:
I would like to ask a question about SSL. Consider the situation that
a man in the middle. Because he can always fake TCP RST/SYN packet, so
he can always block the client to get service from the https server.

So can I say that this is an intrinsic vulnerable in SSL, as
considering the situation that the attacker is in the same LAN with
the client, the attacker can always block the client to reach his
server (say on-line banking)?

Thanks
David


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("If at first you don't succeed; call it version 1.0")

Shreyas Zare
Co-Founder, Technitium
eMail: shreyas () technitium com

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