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Description
JIT compilers have been the subject of numerous vulnerability discoveries. This is due to the nuances of optimization phases and their potential to introduce subtle bugs. This talk aims to unravel some key optimization phases in JavaScriptCore, WebKit’s JavaScript engine that powers Apple Safari.
The focus will be mainly on DFG intermediate representation and how optimization phases on this can give rise to vulnerabilities.
Through specific examples and case studies, we will examine vulnerabilities resulting from logic errors in the compiler. These examples will showcase the real-world impact of optimization phase vulnerabilities, highlighting their severity and potential exploitation scenarios.
