Revive Adserver Team · Revive Adserver · CVE-2016-9471
**Name of the Vulnerable Software and Affected Versions**
Revive Adserver versions prior to 3.2.5
Revive Adserver versions prior to 4.0.0
**Description**
The issue concerns Special Element Injection due to improper sanitization of usernames when creating users on a Revive Adserver instance. Specifically, control characters were not filtered, allowing multiple usernames that appear identical to co-exist in the system. This could be exploited for user spoofing, although it requires elevated privileges to create users within Revive Adserver.
**Recommendations**
For Revive Adserver versions prior to 3.2.5, update to version 3.2.5 or later.
For Revive Adserver versions prior to 4.0.0, update to version 4.0.0 or later.