Projects

Zero-Day Research: ehttp Use-after-Free (CVE-2023-52266) and Out-of-Bounds Read (CVE-2023-52267)

The ehttp library advertises itself as a ‘simple HTTP server based on epoll’. The primary goal of the library is to provide an easy-to-use HTTP microservice with JSON support. The library supports HTTP 1.0/1.1 with GET and POST request methods. When utilizing a new library, I always execute various fuzz tests against the library to […]

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9V Telephone Project

9 Volt, Battery Powered, Telephone Intercom System

When I was developing the VoIP Fundamentals course, I wanted a demonstration to illustrate the simplicity of the public switched telephone network. After combing through the internet, I came across this ingenious little project. With just a 9V battery, a resistor, a telephone cord, and a couple of phones you can create a simple little intercom

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Rig It Up: How to Make a Signal Generator from an Old Microphone and Youtube

Recently I started a redesign for the Griffin amplifier. Why a redesign? It’s a long story that involved me talking to a lot of smart people. For this newest redesign, I needed my own test equipment, so I dropped a few bucks on this. She’s a beauty and I’ve been having a lot of fun. Give Me

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