Vulnerability Description
An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Asus | Dsl-N14U B1 Firmware | 1.1.2.3_805 |
| Asus | Dsl-N14U B1 | - |
Related Weaknesses (CWE)
References
- https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-ExploitThird Party Advisory
- https://kaisersource.github.io/dsl-n14uExploitThird Party Advisory
- https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-ExploitThird Party Advisory
- https://kaisersource.github.io/dsl-n14uExploitThird Party Advisory
FAQ
What is CVE-2021-3166?
CVE-2021-3166 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file i...
How severe is CVE-2021-3166?
CVE-2021-3166 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3166?
Check the references section above for vendor advisories and patch information. Affected products include: Asus Dsl-N14U B1 Firmware, Asus Dsl-N14U B1.