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CVE-2025-2783 — This project is a research-oriented and educational simulation designed to demonstrate the concept of a sandbox escape vulnerability within Google Chrome (version 134.0.6998.177), leveraging improper handle , validation via Mojo IPC. | Kitploit
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GitHubbytereaper77/cve-2025-2783

CVE-2025-2783

This project is a research-oriented and educational simulation designed to demonstrate the concept of a sandbox escape vulnerability within Google Chrome (version 134.0.6998.177), leveraging improper handle , validation via Mojo IPC.

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SandBoxEscapeSim

CVE-2025-2783: Educational Sandbox Escape Simulation for Chrome

Author: Byte Reaper (@ByteReaper0)

Overview

This project is a research-oriented and educational simulation designed to demonstrate the concept of a sandbox escape vulnerability within Google Chrome (version 134.0.6998.177). It leverages improper handle validation via the Mojo IPC system to illustrate how a malicious actor might attempt to break out of the browser’s sandbox and access restricted resources.

Note: This is not a working exploit. All actions are simulated in a controlled environment for learning purposes only.

Features

  1. Mojo IPC Pipe Simulation Demonstrates the creation of a Mojo message pipe using Chrome’s IPC API.
  2. Fake Handle Injection Shows how to append a user-supplied, spoofed handle into an IPC message.
  3. Sandbox Permission Check Attempts to read various system paths to simulate a sandbox breakout.
  4. Readable Console Output Provides step-by-step feedback on the simulation status.

Prerequisites

  • A Windows environment (32‑bit or 64‑bit).
  • GCC or any compatible C compiler.
  • Mojo C headers (Chromium IPC library).
  • Windows SDK for WinAPI functions.
  • for command-line parsing.
argparse.h

Compilation

gcc SandBoxEscapeSim.c argparse.c -o SandBoxEs -lmojo -lwindows

Adjust library flags as needed for your system.

Usage

./SandBoxEs -h <fake_handle>

Example:

./SandBoxEs -h 0xDEADBEEF

Simulation Flow

  1. System Check Validates the OS is Windows (32‑bit or 64‑bit).

  2. Retrieve Current User Uses WinAPI to get the logged-in username.

  3. Mojo Message Creation

    • Creates a message pipe.
    • Builds a message handle.

  4. Fake Handle Append

    • Injects the spoofed handle using MojoAppendMessageData().
    • Copies a sample payload ("Hello Browser") into the buffer.

  5. Message Write Sends the crafted message into the simulated browser pipe.

  6. Sandbox Escape Check Attempts to open and read files in protected locations:

    • C:\Windows\System32\config\SAM
    • C:\Windows\System32\config\SYSTEM
    • User Documents, Desktop, Downloads, and more.

  7. Result Report Outputs whether the simulated breakout succeeded.

Options

  • -h, --handle Specify a fake 32‑bit handle in hexadecimal (e.g., 0xDEADBEEF).

Output Interpretation

  • [+] Handle And Message Sent Successfully! The fake handle was accepted by the simulated pipe.
  • [+] SandBox Escape Success! The simulation was able to open a restricted file path, indicating an escape.
  • [-] Access Denied... Indicates the simulation could not read protected files.

Limitations & Disclaimer

  • Non-exploitative: All file reads and handle injections are purely simulated.
  • Educational Use Only: Do not run against real browsers or production environments.
  • Controlled Environment: Always test in an isolated VM or lab setup.

Warnings & Safety

Running this code outside of a sandboxed VM may lead to undefined behavior. Unauthorized testing on production machines or networks is strictly forbidden.

Dependencies

  • mojo/public/c/system/functions.h
  • mojo/public/c/system/types.h
  • mojo/public/c/system/message_pipe.h
  • windows.h, lmcons.h
  • argparse.h

License

This project is released under the MIT License.

Contact

  • Author: Byte Reaper
  • Telegram: @ByteReaper0

Happy Learning!

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