State of DNS Rebinding - Attack & Prevention Techniques and the Singularity of Origin

DEF CON 27

Presented by: Gerald Doussot, Roger Meyer
Date: Saturday August 10, 2019
Time: 15:00 - 15:45
Location: Track 3

Do you want to know how you can exploit DNS rebinding 10x faster, bypass prevention mechanisms, interactively browse the victim's internal network, and automate the whole process during your next red team exercise?

This talk will teach you how and give you an easy-to-use tool to do it.

First, we will cover in detail the subtleties that make DNS rebinding attacks more effective in practice, including techniques and operational conditions that make it faster and more reliable. We'll also explain how to bypass commonly recommended security controls, dispelling attack and defense misconceptions that have been disseminated in blogs and social media posts.

This talk will include a number of demos using Singularity, our open source DNS rebinding attack framework that includes all the parts you need to get started pwning today, including:

Remote code execution and exfiltration payloads for common dev tools and software Practical scanning and automation techniques to maximize the chance of controlling targeted services We'll also show an interesting post-exploitation technique that allows you to browse a victim browser network environment via the attacker's browser without the use of HTTP proxies.

You'll leave this talk with the knowledge and tools to immediately start finding and exploiting DNS rebinding bugs.

Gerald Doussot

Gerald Doussot is a Principal Security Consultant at NCC Group, with over 20 years experience in information technology. Gerald has undertaken defensive and offensive security roles, including the design, implementation and management of security solutions, software development, integration and security Testing.

Roger Meyer

Roger Meyer is a Principal Security Engineer at NCC Group with extensive experience in managing and leading complex engagements. Roger specializes in web application security, network penetration testing, configuration reviews, and secure software development and architecture design.


KhanFu - Mobile schedules for INFOSEC conferences.
Mobile interface | Alternate Formats