CVE-2021-27707
Last modified
CVE-2021-27707 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"portMappingIndex "request. This occurs because the "formDelPortMapping" function directly passes the parameter "portMappingIndex" to strcpy without limit.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.
Description
Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"portMappingIndex "request. This occurs because the "formDelPortMapping" function directly passes the parameter "portMappingIndex" to strcpy without limit.
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 | G1 Firmware | v15.11.0.17\(9502\)_cn |
| Tenda | G3 Firmware | v15.11.0.17\(9502\)_cn |
References
- https://hackmd.io/U7OVgYIuRcOKV7SW5-euHwExploit, Third Party Advisory
- https://hackmd.io/U7OVgYIuRcOKV7SW5-euHwExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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