This statement in the iOS 7 release notes implies that non-China devices do not need user consent:
iOS now requests user consent for apps to use audio input on all iOS 7 devices. For devices sold in China, iOS will also request user consent for apps to use the camera hardware. iOS SDK Release Notes for iOS 7 GM
Is there any protection against an app accessing either camera without the user's knowledge and/or consent?
This is a follow-up question to the comment on device fingerprinting (and other iOS privacy vulnerabilities) here: What unique fingerprinting information can an iOS7 app collect?