Exposure of Sensitive Information to an Unauthorized Actor
Apple iTunes before 8.1 does not properly inform the user about the origin of an authentication request, which makes it easier for remote podcast servers to trick a user into providing a username and password when subscribing to a crafted podcast.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.