Microsoft Edge (Windows 10) - 'chakra.dll' Information Leak / Type Confusion Remote Code Execution

Author: Brian Pak
type: remote
platform: windows
port: 
date_added: 2017-01-05 
date_updated: 2018-05-18 
verified: 0 
codes: CVE-2016-7200;CVE-2016-7201 
tags: Client Side
aliases:  
screenshot_url:  
application_url: 

Source: https://github.com/theori-io/chakra-2016-11

Proofs of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/40990.zip


chakra.dll Info Leak + Type Confusion for RCE

Proof-of-Concept exploit for Edge bugs (CVE-2016-7200 & CVE-2016-7201)

Tested on Windows 10 Edge (modern.ie stable).

FillFromPrototypes_TypeConfusion.html: WinExec notepad.exe

FillFromPrototypes_TypeConfusion_NoSC.html: 0xcc (INT 3)

To run:

Download exploit/FillFromPrototypes_TypeConfusion.html to a directory.
Serve the directory using a webserver (or python's simple HTTP server).
Browse with a victim IE to FillFromPrototypes_TypeConfusion.html.