Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.
https://www.wowza.com/products/streaming-engine
https://www.wowza.com/docs/wowza-streaming-engine-4-8-12-release-notes