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Google Chrome 72 and 73 Array.map exploit

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Google Chrome 72 and 73 Array.map exploit

Disclosed
03/07/2019
Created
03/06/2020

Description

This module exploits an issue in Chrome 73.0.3683.86 (64 bit). The exploit corrupts the length of a float in order to modify the backing store of a typed array. The typed array can then be used to read and write arbitrary memory. The exploit then uses WebAssembly in order to allocate a region of RWX memory, which is then replaced with the payload. The payload is executed within the sandboxed renderer process, so the browser must be run with the --no-sandbox option for the payload to work correctly.

Author(s)

  • dmxcsnsbh
  • István Kurucsai
  • timwr

Platform

OSX,Windows

Architectures

x64

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/multi/browser/chrome_array_map
msf exploit(chrome_array_map) > show targets
    ...targets...
msf exploit(chrome_array_map) > set TARGET < target-id >
msf exploit(chrome_array_map) > show options
    ...show and set options...
msf exploit(chrome_array_map) > exploit

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