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CVE-2024-29943

★ 97 Open GitHub ↗

A Pwn2Own 2024 SpiderMonkey JIT Bug: From Integer Range Inconsistency to Bound Check Elimination then RCE

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# CVE-2024-29943

A Pwn2Own SpiderMonkey JIT Bug: From Integer Range Inconsistency to Bound Check Elimination then RCE.

This repository contains PoC, Exploit and Analysis Slides for CVE-2024-29943.

## Demo

[Demo.mp4](Demo.mp4)

## Slides

[Slides.pdf](Slides.pdf)

## Reproduce Information

- Github Git Commit: [afbdf6822c9e9f9b6d44b9ea6904cb10878126b1](https://github.com/mozilla/gecko-dev/commit/afbdf6822c9e9f9b6d44b9ea6904cb10878126b1)
- Operating System: Ubuntu 22.04
- Architecture: amd64
- Command Line Arguments: `./js --ion-offthread-compile=off --spectre-mitigations=off PoC.js`
- Patch for JitSpew Debug: [JitSpew.patch](JitSpew.patch)

## Acknowledgement

- Shoutout to [Manfred Paul](https://x.com/_manfp) for finding the bug.
- Shoutout to [@maxpl0it](https://x.com/maxpl0it) for [giving the integer range inconsistent PoC](https://x.com/maxpl0it/status/1771258714541978060).

## References

1. https://hg.mozilla.org/mozilla-central/rev/45d29e78c0d8f9501e198a512610a519e0605458
2. https://github.com/mozilla/gecko-dev/commit/81806e7ccec7dde41e37c9891592a6e39ce46380
3. https://doar-e.github.io/blog/2018/11/19/introduction-to-spidermonkey-exploitation/
4. https://starlabs.sg/blog/2020/04-tianfu-cup-2019-adobe-reader-exploitation/

## Disclaimer
This repository is intended solely for educational purposes and must not be used for any malicious activities.

CVE-2024-29943

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