### [CVE-2016-9471](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9471)
![](https://img.shields.io/static/v1?label=Product&message=Revive%20Adserver%20All%20versions%20before%203.2.5%20and%204.0.0&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Failure%20to%20Sanitize%20Special%20Elements%20into%20a%20Different%20Plane%20(Special%20Element%20Injection)%20(CWE-75)&color=brighgreen)

### Description

Revive Adserver before 3.2.5 and 4.0.0 suffers from Special Element Injection. Usernames weren't properly sanitised when creating users on a Revive Adserver instance. Especially, control characters were not filtered, allowing apparently identical usernames to co-exist in the system, due to the fact that such characters are normally ignored when an HTML page is displayed in a browser. The issue could have therefore been exploited for user spoofing, although elevated privileges are required to create users within Revive Adserver.

### POC

#### Reference
- https://www.revive-adserver.com/security/revive-sa-2016-002/

#### Github
No PoCs found on GitHub currently.