Mozilla Firefox before 46.0 on Android before 5.0 allows attackers to bypass intended Signature access requirements via a crafted application that leverages content-provider permissions, as demonstrated by reading the browser history or a saved password.
https://security.gentoo.org/glsa/201701-15
https://bugzilla.mozilla.org/show_bug.cgi?id=1229681
http://www.securitytracker.com/id/1035692
http://www.mozilla.org/security/announce/2016/mfsa2016-41.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html