IBM WebSphere Portal 8.0.0 before 8.0.0.1 CF13 and 8.5.0 through CF01 provides different error codes for firewall-traversal requests depending on whether the intranet host exists, which allows remote attackers to map the intranet network via a series of requests.
Exposure of Sensitive Information to an Unauthorized Actor The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.