WebAPI/Security/Settings

Name of API: Settings API Reference: https://bugzilla.mozilla.org/show_bug.cgi?id=678695

Brief purpose of API: API to configure device settings General Use Cases: None

Inherent threats:

• Access sensitive configuration data (wifi passwords etc)
• Change settings which might cost user money (data settings, roaming etc)
• Privacy implications

Threat severity: High

Regular web content (unauthenticated)

• Use cases for unauthenticated code: Read/change non-sensitive settings
• Authorization model for normal content: None
• Authorization model for installed content: Implicit read access to limited settings. Write access via web intents.
• Potential mitigations: Only non-sensitive settings will be exposed to regular apps.

Trusted (authenticated by publisher)

• Use cases for authenticated code: Modify a specific setting - e.g. e-book app modifies brightness in response to lighting conditions
• Authorization model: Implicit
• Potential mitigations: Access to a subset of lower risk settings

Certified (vouched for by trusted 3rd party)

• Use cases for certified code: replacement settings manager app
• Authorization model: Implicit access to all settings
• Potential mitigations: None