Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bundle-negotiation-32 - Magnus' comments - MID security
Eric Rescorla <ekr@rtfm.com> Wed, 12 October 2016 16:58 UTC
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References: <D41C238A.1095B%christer.holmberg@ericsson.com> <71419d1f-af1d-46e9-401d-81c5df73fc49@ericsson.com> <58510E68-A045-4312-B3B3-3468E83C8EB7@iii.ca> <243c777f-46f9-4053-1588-7e6b58a06c8c@ericsson.com> <D423DEE7.1101D%christer.holmberg@ericsson.com> <D423FEEE.11074%christer.holmberg@ericsson.com>
From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 12 Oct 2016 09:57:22 -0700
Message-ID: <CABcZeBO7b3XGRTCzN4-Z-6=8sTD3nrr8HtgN1q9np-hZ3tqbMQ@mail.gmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
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Cc: Magnus Westerlund <magnus.westerlund@ericsson.com>, Paul Kyzivat <pkyzivat@alum.mit.edu>, "mmusic@ietf.org" <mmusic@ietf.org>, Cullen Jennings <fluffy@iii.ca>
Subject: Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bundle-negotiation-32 - Magnus' comments - MID security
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I don't think there is anything like consensus for a 2919-level RECOMMENDED to encrypt the MID. On Wed, Oct 12, 2016 at 4:47 AM, Christer Holmberg < christer.holmberg@ericsson.com> wrote: > Pull request created. > > https://github.com/cdh4u/draft-sdp-bundle/pull/11 > > > Regards, > > Christer > > > On 12/10/16 12:32, "mmusic on behalf of Christer Holmberg" > <mmusic-bounces@ietf.org on behalf of christer.holmberg@ericsson.com> > wrote: > > >Hi, > > > >Based on the discussions, and input that has been provided, are people ok > >with adding the text Magnus suggested (see below) to the Security > >Considerations of BUNDLE? > > > >Regards, > > > >Christer > > > > > >>>> The identfication-tag when included in the RTP MID SDES item, > >>>> independent of transport, RTCP SDES packet or RTP header extension, > >>>> can expose the value to parties beyond the signaling chain. > >>>> Therefore, the identification-tag MUST NOT contain any user related > >>>> information. However, the implementation's method for generating > >>>> identfication-tags combined with hardware configuration can enable > >>>> fingerprinting of the endpoint device and thus its user. As the > >>>> identification-tag is also used to route the media stream to the > >>>> right application functionality it is also important that the value > >>>> received is the one intended by the sender, thus integrity and the > >>>> authenticity of the source are important to prevent denial of > >>>> service on the application. At least to prevent third parties from > >>>> modifying the identification-tag value. > >>>> > >>>> Due to the security risks associated with the MID values in RTP and > >>>> RTCP it is strongly RECOMMENDED that the MID SDES item is both > >>>> confidentiality protected as well as source authenticated when > >>>> transported in either RTCP or RTP header extensions. The security > >>>> mechanisms used SHALL provide corresponding levels of security for > >>>> both RTP header extensions and RTCP. Confidentiality mechanisms for > >>>> RTP/RTCP are discussed in Options for Securing RTP Sessions > >>>> [RFC7201], for example SRTP [RFC3711] with SRTCP encryption enabled > >>>> combined with [RFC6904] can provide the necessary security > >>>> functions. > > > >_______________________________________________ > >mmusic mailing list > >mmusic@ietf.org > >https://www.ietf.org/mailman/listinfo/mmusic > > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www.ietf.org/mailman/listinfo/mmusic >
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Christer Holmberg
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Cullen Jennings
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Jonathan Lennox
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Cullen Jennings
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Eric Rescorla
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Christer Holmberg
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Christer Holmberg
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Eric Rescorla
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Christer Holmberg
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Eric Rescorla
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Eric Rescorla
- Re: [MMUSIC] Review of draft-ietf-mmusic-sdp-bund… Magnus Westerlund
- [MMUSIC] BUNDLE - MID Security - Updated text pro… Magnus Westerlund
- Re: [MMUSIC] BUNDLE - MID Security - Updated text… Cullen Jennings
- Re: [MMUSIC] BUNDLE - MID Security - Updated text… Adam Roach
- Re: [MMUSIC] BUNDLE - MID Security - Updated text… Magnus Westerlund
- Re: [MMUSIC] BUNDLE - MID Security - Updated text… Ted Hardie
- Re: [MMUSIC] BUNDLE - MID Security - Updated text… Magnus Westerlund