DNSOP P. Wouters, Ed.
Internet-Draft The Internet
Intended status: Experimental 3 May 2021
Expires: 4 November 2021
The DAKAMI RRTYPE
draft-pwouters-dnsop-dakami-00
Abstract
This document specifies a new DNS RR type DAKAMI. It is used to
signify and honor the impact of security researcher Dan Kaminsky on
the DNS ecosystem.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on 4 November 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. The DAKAMI Resource Record . . . . . . . . . . . . . . . . . 3
4. Location of the DAKAMAI Record . . . . . . . . . . . . . . . 3
5. Example of a DAKAMI Resource Record . . . . . . . . . . . . . 3
5.1. The DAKMAI RDATA Wire Format example . . . . . . . . . . 3
5.2. The DAKMAI RDATA Presentation Format example . . . . . . 3
6. Operational Considerations . . . . . . . . . . . . . . . . . 4
7. Security Considerations . . . . . . . . . . . . . . . . . . . 4
8. Privacy Considerations . . . . . . . . . . . . . . . . . . . 4
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
11.1. Normative References . . . . . . . . . . . . . . . . . . 6
11.2. Informative References . . . . . . . . . . . . . . . . . 6
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 6
1. Introduction
This document defines a mechanism to send a DNS query honoring the
security researcher Dan Kaminsky, whose online handle was "dakami".
Dan Kaminsky suddenly passed away in April 2021 at the age of 42. He
will be thoroughly missed.
The "Kaminsky Bug", formally known as CVE-2008-1447, allowed remote
attackers to spoof DNS traffic that is not protected by DNSSEC via a
birthday attack that uses in-bailiwick referrals to conduct cache
poisoning against recursive resolvers, related to insufficient
randomness of DNS transaction IDs and source ports.
While Dan Kaminsky was known in the DNS community for his famous bug
and the coordinated response that followed, he was also a well known
(white hat) hacker known for encouraging everyone to learn, teach and
build a better internet for each other. He has been, and continous
to be, an inspiration for Internet engineers and hackers world wide.
Dan Kaminsky has been nominated for the Internet Hall of Fame.
2. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
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3. The DAKAMI Resource Record
The DAKAMI DNS resource record (RR) is used to honor and remember the
achievements of security researcher Dan Kaminsky.
The type value allocated for the DAKAMI RR type is 32767. The DAKAMI
RR is class independent.
The RDATA portion of a DAKAMI resource record contains a string that
is semantically equivalent to the TXT [RFC1035] record.
4. Location of the DAKAMAI Record
There is no fixed location for this RR. Those who wish to publish
this RR MAY prefer to place it at their zone's apex.
5. Example of a DAKAMI Resource Record
An example string one might use is a single static null terminated
string consisting of the ascii text "Well Dan, I think you should
know........".
This text was spoken by Dan's niece Sarah, in the famous video "Sarah
on DNS" [SARAH-ON-DNS] which sent an important message about DNS in
what later would become known as the Kaminsky Bug. It can also be
seen as the start of a message that the DNS querier is sending to
Dan.
The length of this example RDATA is 42 octets, signifying Dan
Kaminsky's age at the time of his untimely passing as well as
signifying his quest to always learn more about life, the universe
and everything. The number 42 in ASCII also represents the wildcard,
and Dan Kaminsky definitely came into the IETF on a wildcard.
5.1. The DAKMAI RDATA Wire Format example
The example RDATA Wire Format consists of the following hexadecimal
octets:
57 65 6c 6c 20 44 61 6e 2c 20 49 20 74 68 69 6e
6b 20 79 6f 75 20 73 68 6f 75 6c 64 20 6b 6e 6f
77 2e 2e 2e 2e 2e 2e 2e 2e 00
5.2. The DAKMAI RDATA Presentation Format example
The example RDATA Presentation Format, as visible in zone files
[RFC1035], consists of the following ascii string within double
quotes:
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Well Dan, I think you should know........
6. Operational Considerations
The DAKAMI RR should have no operational impact on the operation of
the DNS. The RR SHOULD NOT be added to the Additional Section. If
it is added to the Additional Section, it MUST be added as the last
RR and MUST NOT cause truncation or fragmentation of the DNS
response.
7. Security Considerations
The DAKAMI RR does not alter the security of the DNS.
Dan Kaminsky considerably improved the security of DNS and the
internet in general. His handling of the Kaminsky Bug, together with
the help of the people at ISC and elsewhere, has raised the standard
of responsible disclosure.
8. Privacy Considerations
The implementation and usage of the DAKAMI RR has no privacy impact
other than revealing an appreciation for a lifetime of achievements
by Dan Kaminsky.
9. IANA Considerations
This document defines a new DNS RR type, DAKAMI, whose value 32767
has been allocated by IANA from the DNS Resource Record (RR) TYPEs
registry.
10. Acknowledgements
Dan Kaminsky, we acknowledge you for a lifetime achievement of
sharing your technical expertise, for using your knowledge and
charisma for good, for inspiring and assisting others no matter what
project they were working on and for always reminding us that how we
do things is as important as what we do. May your DNS queries flow
over the internet for as long as we haven't build something better.
Thank you Dan, for everything.
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11. References
11.1. Normative References
[RFC1035] Mockapetris, P., "Domain names - implementation and
specification", STD 13, RFC 1035, DOI 10.17487/RFC1035,
November 1987, <https://www.rfc-editor.org/info/rfc1035>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
11.2. Informative References
[SARAH-ON-DNS]
Kaminsky, D. and S. Roberts, "Sarah On DNS", 2008,
<https://www.dailymotion.com/video/x2lp3m4>.
Author's Address
Paul Wouters (editor)
The Internet
Email: paul@nohats.ca
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