cve/2021/CVE-2021-3166.md

### [CVE-2021-3166](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3166)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### 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.

### POC

#### Reference
- https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-17-dsl-n14u.md
- https://kaisersource.github.io/dsl-n14u

#### Github
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/kaisersource/CVE-2021-3166
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC