The God Kings application 0.60.1 for Android exposes a broadcast receiver to other apps called com.innogames.core.frontend.notifications.receivers.LocalNotificationBroadcastReceiver. The purpose of this broadcast receiver is to show an in-game push notification to the player. However, the application does not enforce any authorization schema on the broadcast receiver, allowing any application to send fully customizable in-game push notifications.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25204
Reference (s):
- http://packetstormsecurity.com/files/159747/God-Kings-0.60.1-Notification-Spoofing.html