1. DNS/danglingDNSrecords

/SPF

Dangling Domains: Security Threats, Detection and Prevalence

By Daiping Liu and Ruian Duan September 16, 2021 at 6:00 AM Category: Unit 42

Tags: dangling domains, DNS, DNS security, domain, domain hijacking, Phishing

https://unit42.paloaltonetworks.com/dangling-domains/

ダングリングドメインによるセキュリティ脅威とその検出および蔓延状況

Executive Summary

The Domain Name System (DNS) provides the naming service which maps mnemonic domain names 
to various resources such as IP addresses, email servers and so on. 
As one of the most fundamental internet components, DNS and domain names usually serve as trusted anchors 
for users to access desired internet resources. 
As a result, threat actors constantly attempt to exploit DNS for illicit online activities. 
In particular, many attackers try to hijack domains with benign reputations. 
Several well-known techniques, including cache poisoning, 
malicious resolvers and domain registrar account hijacking, are used to achieve domain hijacking. 
However, great efforts like DNSSEC have been made to strengthen the DNS ecosystem in recent decades, 
and these hijacking techniques have become more challenging to achieve in practice.

役に立たない要約だ。


1.1. 2023

https://dl.acm.org/doi/10.1145/2976749.2978387

Zhang M, Li X, Liu B, Lu J, Zhang Y, Chen J, Duan H, Hao S and Zheng X. (2023). Detecting and Measuring Security Risks of Hosting-Based Dangling Domains.


../danglingCNAMEs /BestPractices /awsdns

1.2. 2017

Dangling DNS Records are a Real Vulnerability Nabeel Yoosuf

Jan 2, 2017 · 7 min read https://medium.com/@nabeelxy/dangling-dns-records-are-a-real-vulnerability-361f2a29d37f

1.3. 2019

Dangling DNS is no laughing matter

Brett Carr headshot

https://nominetcyber.com/dangling-dns-is-no-laughing-matter/

Remove AWS Route 53 Dangling DNS Records https://www.cloudconformity.com/knowledge-base/aws/Route53/dangling-dns-records.html

Tool to tackle problematic dangling domains in Amazon Web Services. https://github.com/tacticaljmp/danglingaws

Fishing the AWS IP Pool for Dangling https://know.bishopfox.com/blog/2015/10/fishing-the-aws-ip-pool-for-dangling-domains


1.4. 2016

All Your DNS Records Point to Us Understanding the Security Threats of Dangling DNS Record

Daiping Liu*, Shuai Hao*†, and Haining Wang

https://www.eecis.udel.edu/~hnw/paper/ccs16a.pdf (2016)

ABSTRACT

In a dangling DNS record (Dare), the resources pointed to by theDNS record are invalid, but the record itself has not yet been purged from DNS.

In this paper, we shed light on a largely overlookedthreat in DNS posed by dangling DNS records. Our work reveals that Dare can be easily manipulated by adversaries for domain hijacking.

In particular, we identify three attack vectors that an adversary can harness to exploit Dares.

In a large-scale measurementstudy, we uncover 467 exploitable Dares in 277 Alexa top 10,000domains and 52edu zones, showing that Dare is a real, preva-lent threat.

By exploiting these Dares, an adversary can take fullcontrol of the (sub)domains and can even have them signed with aCertificate Authority (CA).

It is evident that the underlying causeof exploitable Dares is the lack of authenticity checking for theresources to which that DNS record points.

We then propose three defense


Getting the Alexa top 1 million sites directly from the server, unzipping it, parsing the csv and getting each line as an array.

https://gist.github.com/chilts/7229605

1.5. history


CategoryDns CategoryWatch CategoryTemplate

MoinQ: DNS/danglingDNSrecords/history (last edited 2023-04-12 21:21:16 by ToshinoriMaeno)