DotNetNuke (aka DNN) before 9.2.0 suffers from a server-side request forgery vulnerability in the DnnImageHandler class. Attackers may be able to access information about internal network resources.
View the template here CVE-2017-0929.yaml
References:
https://github.com/dnnsoftware/Dnn.Platform/commit/d3953db85fee77bb5e6383747692c507ef8b94c3