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Re: [saag] Possible backdoor in RFC 5114

Yoav Nir <ynir.ietf@gmail.com> Wed, 12 October 2016 09:48 UTC

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From: Yoav Nir <ynir.ietf@gmail.com>
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Date: Wed, 12 Oct 2016 12:48:41 +0300
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To: Antonio Sanso <asanso@adobe.com>
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Cc: Security Area Advisory Group <saag@ietf.org>
Subject: Re: [saag] Possible backdoor in RFC 5114
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> On 12 Oct 2016, at 10:17, Antonio Sanso <asanso@adobe.com> wrote:
> 
> hi Yoav
> 
>> IANA numbers have been assigned to them for IKE, but they have not seen widespread use
> 
> I would not be too sure about this. For example see [0]. On top Exim and BouncyCastle have RFC 5114 as default for DH. 
> And more to come…
> 

Hey, if you’re collecting them, it is possible (though annoying) to configure “group 24” on Check Point gateways ([0]).

But I don’t know any IKE implementations that use that by default.

Yoav

[0] https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk27054

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