The Hat Trick: Exploit Chrome Twice from Runtime to JIT

Exploit Chrome twice from runtime to JIT: a complex vulnerability in V8 JavaScript engine, involving promise.any and Maglev graph, allowing remote code execution.

Key takeaways

V8 JavaScript engine has a complex architecture and is prone to exploitation due to its flexibility.
A vulnerability in the V8 runtime environment was discovered, allowing for remote code execution.
The vulnerability is related to the incorrect implementation of the new JavaScript engine in the V8 runtime environment.
The Maglev graph is a compilation mechanism in V8 that generates optimized code.
The promise.any function is used to handle a collection of promises, and it has a vulnerability that allows for out-of-bound operations.
The promise.any function does not use undefined as a placeholder when iterating over new inputs, which can lead to performance overhead.
The vulnerability is exploited by manipulating the heap layout and using garbage collection to manipulate the heap space efficiently.
The vulnerability is related to the float_box node, which can lead to performance overhead.
The exploit uses a combination of promise.any and Maglev to achieve remote code execution.
The vulnerability is difficult to detect because it relies on a specific scenario and requires special attention.
The vulnerability was demonstrated in a proof-of-concept code.
The vulnerability is related to the errors array, which is used to store values that are not null or undefined.
The error handling in promise.any is not properly implemented, which allows for exploitation.
The vulnerability is related to the way promise.any handles rejected promises, which allows for out-of-bound operations.
The vulnerability can be exploited by using a combination of promise.any and Maglev to achieve remote code execution.
The vulnerability is difficult to detect because it relies on a specific scenario and requires special attention.
The vulnerability was demonstrated in a proof-of-concept code, which shows how to exploit the vulnerability.
The vulnerability is related to the garbage collector, which can lead to memory corruption.
The exploit uses a combination of promise.any and Maglev to achieve remote code execution.

The Hat Trick: Exploit Chrome Twice from Runtime to JIT

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