CVE-2021-46394
Last modified
CVE-2021-46394 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN. The v13 variable is directly retrieved from the http request parameter startIp. EPSS estimates a 2.56% chance of exploitation in the next 30 days.
Description
There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN. The v13 variable is directly retrieved from the http request parameter startIp. Then v13 will be splice to stack by function sscanf without any security check, which causes stack overflow. By POSTing the page /goform/SetPptpServerCfg with proper startIp, the attacker can easily perform remote code execution with carefully crafted overflow data.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tenda | Ax3 Firmware | 16.03.12.10 |
References
- https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX3/4Exploit, Third Party Advisory
- https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX3/4Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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