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Re: [secdir] secdir review of draft-ietf-slim-negotiating-human-language-22

Taylor Yu <tlyu@mit.edu> Thu, 11 January 2018 20:14 UTC

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From: Taylor Yu <tlyu@mit.edu>
To: Randall Gellens <rg+ietf@randy.pensive.org>
Cc: iesg@ietf.org, secdir@ietf.org, draft-ietf-slim-negotiating-human-language.all@ietf.org
References: <p06240600d67d2e5fcbb7@[99.111.97.136]>
Date: Thu, 11 Jan 2018 20:14:28 +0000
In-Reply-To: <p06240600d67d2e5fcbb7@[99.111.97.136]> (Randall Gellens's message of "Thu\, 11 Jan 2018 07\:10\:43 -0800")
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Subject: Re: [secdir] secdir review of draft-ietf-slim-negotiating-human-language-22
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Randall Gellens <rg+ietf@randy.pensive.org> writes:

> Thanks for your review.  In response to Alissa's comments, I reworded
> the Security Considerations section to read:
>
>    The Security Considerations of BCP 47 [RFC5646] apply here.  An
>    attacker with the ability to modify signaling could prevent a call
>    from succeeding by altering any of several crucial elements,
>    including the 'hlang-send' or 'hlang-recv' values.  RFC 5069
>    [RFC5069] discusses such threats.  Use of TLS or IPSec can protect
>    against such threats.  Emergency calls are of particular concern; RFC
>    6881 [RFC6881], which is specific to emergency calls, mandates use of
>    TLS or IPSec (in ED-57/SP-30).
>
> I think this also addresses your concern regarding integrity, as it
> specifically calls out "modification" as a principal threat.

Hi Randall,

Thanks.  This new text seems reasonable.

-Taylor

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