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Unresolved Issues: Prevalence, Persistence, and Perils of Lame Delegations

Published: 27 October 2020 Publication History
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  • Abstract

    The modern Internet relies on the Domain Name System (DNS) to convert between human-readable domain names and IP addresses. However, the correct and efficient implementation of this function is jeopardized when the configuration data binding domains, nameservers and glue records is faulty. In particular lame delegations, which occur when a nameserver responsible for a domain is unable to provide authoritative information about it, introduce both performance and security risks. We perform a broad-based measurement study of lame delegations, using both longitudinal zone data and active querying. We show that lame delegations of various kinds are common (affecting roughly 14% of domains we queried), that they can significantly degrade lookup latency (when they do not lead to outright failure), and that they expose hundreds of thousands of domains to adversarial takeover. We also explore circumstances that give rise to this surprising prevalence of lame delegations, including unforeseen interactions between the operational procedures of registrars and registries.

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    Long and Short Talk for IMC 2020 Paper --- "Unresolved Issues: Prevalence, Persistence, and Perils of Lame Delegations"

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        cover image ACM Conferences
        IMC '20: Proceedings of the ACM Internet Measurement Conference
        October 2020
        751 pages
        ISBN:9781450381383
        DOI:10.1145/3419394
        This work is licensed under a Creative Commons Attribution International 4.0 License.

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        Published: 27 October 2020

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        October 27 - 29, 2020
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        • (2023)Detecting and Measuring Security Risks of Hosting-Based Dangling DomainsProceedings of the ACM on Measurement and Analysis of Computing Systems10.1145/35794407:1(1-28)Online publication date: 2-Mar-2023
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