Android is a Linux-based operating system used primarily on touchscreen mobile devices such as smartphones and tablet computers. It was originally developed by Android Inc., but is now owned by Google. WebView is a sub-class of the Android View API which allows an application developer to load a web page as part of a client application.
Applications developed for Android 4.2 (API level 17) and above are not vulnerable. Users who cannot upgrade their Android version should remove all applications that embed advertisements or ensure that they do not connect to untrusted networks while using applications with embedded advertisements.
The user must run a vulnerable application which loads a specially crafted page.