[secdir] Security review of draft-ietf-rtcweb-fec-08 (was Re: Security review of draft-ietf-perc-srtp-ekt-diet-08)
Ben Campbell <ben@nostrum.com> Fri, 01 February 2019 22:49 UTC
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From: Ben Campbell <ben@nostrum.com>
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Date: Fri, 01 Feb 2019 16:49:03 -0600
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Cc: The IESG <iesg@ietf.org>, secdir@ietf.org, draft-ietf-rtcweb-fec.all@tools.ietf.org
To: Hilarie Orman <hilarie@purplestreak.com>
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Subject: [secdir] Security review of draft-ietf-rtcweb-fec-08 (was Re: Security review of draft-ietf-perc-srtp-ekt-diet-08)
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Hi, Please note that this review is for draft-ietf-rtcweb-fec-08, not the PERC draft referenced in the subject. Thanks! Ben. > On Feb 1, 2019, at 1:42 AM, Hilarie Orman <hilarie@purplestreak.com> wrote: > > Security Review of WebRTC Forward Error Correction Requirements > draft-ietf-rtcweb-fec-08 > > Do not be alarmed. I have reviewed this document as part of the > security directorate's ongoing effort to review all IETF documents > being processed by the IESG. These comments were written primarily > for the benefit of the security area directors. Document editors and > WG chairs should treat these comments just like any other last call > comments. > > The document describes the appropriate uses of FEC for web content when > using WebRTC. It also describes how to indicate that FEC is being used. > > The Security Considerations mention the possibility of additional network > congestion when using FEC. Although this can be a problem, I do not think > it is a security issue, thus it does not belong in this section. > > There is a security-related issue wrt to FEC and encryption. If the > error model is that message blocks may be lost but not altered in > transit, then FEC with encryption is fine. But if FEC is added for > the purpose of correcting corrupted bits in a message block, then it > is important that FEC is done after encryption. The draft seems to > ignore the issue, and it also seems to recommend a processing scheme > that would result in encryption of the FEC data. If there is a body > of practice for other IETF FEC protocols that explains these issues, > an explicit reference to it in the Security Considerations would be > very helpful. > > Hilarie > >
- [secdir] Security review of draft-ietf-perc-srtp-… Hilarie Orman
- [secdir] Security review of draft-ietf-rtcweb-fec… Ben Campbell
- Re: [secdir] Security review of draft-ietf-rtcweb… Justin Uberti
- Re: [secdir] Security review of draft-ietf-rtcweb… Hilarie Orman
- Re: [secdir] Security review of draft-ietf-rtcweb… Justin Uberti
- Re: [secdir] Security review of draft-ietf-rtcweb… Hilarie Orman
- Re: [secdir] Security review of draft-ietf-rtcweb… Sean Turner