A slightly less breathless take on it from Ars Technica:
http://arstechnica.co.uk/security/2015/06/serious-ios-bug-makes-it-easy-to-steal-users-icloud-passwords/
http://arstechnica.co.uk/security/2015/06/serious-ios-bug-makes-it-easy-to-steal-users-icloud-passwords/