CVEs-PoC/2020/CVE-2020-15896.md

### [CVE-2020-15896](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15896)
![](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 authentication-bypass issue was discovered on D-Link DAP-1522 devices 1.4x before 1.10b04Beta02. There exist a few pages that are directly accessible by any unauthorized user, e.g., logout.php and login.php. This occurs because of checking the value of NO_NEED_AUTH. If the value of NO_NEED_AUTH is 1, the user has direct access to the webpage without any authentication. By appending a query string NO_NEED_AUTH with the value of 1 to any protected URL, any unauthorized user can access the application directly, as demonstrated by bsc_lan.php?NO_NEED_AUTH=1.

### POC

#### Reference
- https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/

#### Github
- https://github.com/ARPSyndicate/cvemon