Mozilla Firefox before 28.0.1 on Android processes a file: URL by copying a local file onto the SD card, which allows attackers to obtain sensitive information from the Firefox profile directory via a crafted application.
https://www.mozilla.org/security/announce/2014/mfsa2014-33.html
https://bugzilla.mozilla.org/show_bug.cgi?id=945429
http://archives.neohapsis.com/archives/bugtraq/2014-03/0153.html