Re: [DNSOP] Second Working Group Last Call for draft-ietf-dnsop-extended-error
Wes Hardaker <wjhns1@hardakers.net> Wed, 13 November 2019 17:56 UTC
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From: Wes Hardaker <wjhns1@hardakers.net>
To: Puneet Sood <puneets@google.com>
Cc: Wes Hardaker <wjhns1@hardakers.net>, dnsop <dnsop@ietf.org>
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Date: Wed, 13 Nov 2019 09:56:20 -0800
In-Reply-To: <CA+9_gVvqqKwrkM7WYuEGGzfy+DSm3TzwmCDXA+AyyQ3c0Hr8wg@mail.gmail.com> (Puneet Sood's message of "Tue, 22 Oct 2019 21:49:14 -0400")
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Subject: Re: [DNSOP] Second Working Group Last Call for draft-ietf-dnsop-extended-error
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Puneet Sood <puneets@google.com> writes: > Independent of the decision on EDE forwarding and caching, the I-D > needs to have some guidance for it [truncation]. The EXTRA-TEXT field > may be obtained from configuration and it is possible that the > resulting DNS message will exceed UDP message size limit in the > request. I added this text to the next version: <t>When the response grows beyond the requestor's UDP payload size <xref target="RFC6891" />, servers SHOULD truncate messages by dropping EDE options before dropping other data from packets. Implementations SHOULD set the truncation bit when dropping EDE options.</t> (and we'll have a forwarding discussion in Singapore) > > * 14.5.0.4 NOCHANGE 5. Security Considerations > > > > Para 2: "This information is unauthenticated information, and an > > attacker (e.g a MITM or malicious recursive server) could insert an > > extended error response into already untrusted data ..." Comment: > > Agree with some other comments that this is not relevant since no > > action is expected to be taken based on EDEs. Comment: There are > > ideas in the thread to have links to info in the EXTRA-TEXT and > > possibly display it to users. I guess the usual warnings to not > > click on potentially unsafe links apply. > > > > + Yeah, it really would be remiss to leave out that point. There may > > be nothing we can do, but the whole point of a security > > consideration is to properly disclose any known threats/issues. > > I do not see text mentioning this. I think we're miscommunicating. Can you propose concrete text changes? -- Wes Hardaker USC/ISI
- [DNSOP] Second Working Group Last Call for draft-… Tim Wicinski
- Re: [DNSOP] Second Working Group Last Call for dr… Loganaden Velvindron
- Re: [DNSOP] Second Working Group Last Call for dr… Viktor Dukhovni
- Re: [DNSOP] Second Working Group Last Call for dr… Stephane Bortzmeyer
- Re: [DNSOP] Second Working Group Last Call for dr… Michael J. Sheldon
- Re: [DNSOP] Second Working Group Last Call for dr… Puneet Sood
- Re: [DNSOP] Second Working Group Last Call for dr… Viktor Dukhovni
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Vittorio Bertola
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Tim Wicinski
- Re: [DNSOP] Second Working Group Last Call for dr… Petr Špaček
- Re: [DNSOP] Second Working Group Last Call for dr… Tim Wicinski
- Re: [DNSOP] Second Working Group Last Call for dr… Tony Finch
- Re: [DNSOP] Second Working Group Last Call for dr… Puneet Sood
- Re: [DNSOP] Second Working Group Last Call for dr… Puneet Sood
- Re: [DNSOP] Second Working Group Last Call for dr… Patrick McManus
- Re: [DNSOP] Second Working Group Last Call for dr… Eric Orth
- Re: [DNSOP] Second Working Group Last Call for dr… Warren Kumari
- Re: [DNSOP] Second Working Group Last Call for dr… Jan Komissar (jkomissa)
- Re: [DNSOP] Second Working Group Last Call for dr… Petr Špaček
- Re: [DNSOP] Second Working Group Last Call for dr… Petr Špaček
- Re: [DNSOP] Second Working Group Last Call for dr… Eric Orth
- Re: [DNSOP] Second Working Group Last Call for dr… Petr Špaček
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Wes Hardaker
- Re: [DNSOP] Second Working Group Last Call for dr… Viktor Dukhovni
- Re: [DNSOP] Second Working Group Last Call for dr… Viktor Dukhovni
- Re: [DNSOP] Second Working Group Last Call for dr… Richard Gibson
- Re: [DNSOP] Second Working Group Last Call for dr… Vladimír Čunát