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From: John Mattsson <john.mattsson@ericsson.com>
To: saag <saag@ietf.org>, "curdle@ietf.org" <curdle@ietf.org>
Thread-Topic: Time for SSH3?
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Date: Wed, 20 Dec 2023 10:36:26 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/curdle/DchJS_7DgvrXsuRzSItL7Rp85w8>
Subject: [Curdle] Time for SSH3?
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Hi,

SSH was just hit by a major vulnerability. The reasons are that SSH just li=
ke SSL 2.0 =96 TLS 1.2 is built on a very shaky ground. The TLS WG conclude=
d that it was not enough to patch the old TLS and instead decided for the c=
ompletely redesigned TLS 1.3 built on the theoretical foundation of the SIG=
MA-I protocol. I think everybody agrees this was the right decision.

https://arstechnica.com/security/2023/12/hackers-can-break-ssh-channel-inte=
grity-using-novel-data-corruption-attack/

I strongly think the right future for SSH is to not do more patching and in=
stead move to SSH3 build on top of QUIC. One such proposal was recently pub=
lished on arXiv.

https://arxiv.org/pdf/2312.08396.pdf

Cheers,
John Preu=DF Mattsson


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<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">SSH was just hit by a major vul=
nerability. The reasons are that SSH just like SSL 2.0 =96 TLS 1.2 is built=
 on a very shaky ground. The TLS WG concluded that it was not enough to pat=
ch the old TLS and instead decided for
 the completely redesigned TLS 1.3 built on the theoretical foundation of t=
he SIGMA-I protocol. I think everybody agrees this was the right decision.<=
/span><br>
<br>
<a href=3D"https://arstechnica.com/security/2023/12/hackers-can-break-ssh-c=
hannel-integrity-using-novel-data-corruption-attack/">https://arstechnica.c=
om/security/2023/12/hackers-can-break-ssh-channel-integrity-using-novel-dat=
a-corruption-attack/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I strongly think the right futu=
re for SSH is to not do more patching and instead move to SSH3 build on top=
 of QUIC. One such proposal was recently published on arXiv.<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><a href=3D"https://arxiv.org/pdf/2312.08396.pdf">htt=
ps://arxiv.org/pdf/2312.08396.pdf</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"SV">Cheers,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"SV">John Preu=DF Mattsson<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
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