Universal Code Execution by Chaining Messages in Browser Extensions
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Presented at Off-by-One Conference 2024 by
By chaining various messaging APIs in browsers and browser extensions, I demonstrate how we can jump from web pages to “universal code execution”, breaking both Same Origin Policy and the browser sandbox. I provide two new vulnerability disclosures affecting millions of users as examples. In addition, I demonstrate how such vulnerabilities can be discovered at scale with a combination of large dataset queries and static code analysis.