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| Content Provider | ACM Digital Library |
|---|---|
| Author | Georgiev, Martin Shmatikov, Vitaly Jana, Suman |
| Abstract | Many modern desktop and mobile platforms, including Ubuntu, Google Chrome, Windows, and Firefox OS, support so called Web-based system applications that run outside the Web browser and enjoy direct access to native objects such as files, camera, and geolocation. We show that the access-control models of these platforms are (a) incompatible and (b) prone to unintended delegation of native-access rights: when applications request native access for their own code, they unintentionally enable it for untrusted third-party code, too. This enables malicious ads and other third-party content to steal users' OAuth authentication credentials, access camera on their devices, etc. We then design, implement, and evaluate PowerGate, a new access-control mechanism for Web-based system applications. It solves two key problems plaguing all existing platforms: security and consistency. First, unlike the existing platforms, PowerGate correctly protects native objects from unauthorized access. Second, PowerGate provides uniform access-control semantics across all platforms and is 100% backward compatible. PowerGate enables application developers to write well-defined native-object access policies with explicit principals such as "application's own local code" and "third-party Web code," is easy to configure, and incurs negligible performance overhead. |
| Starting Page | 366 |
| Ending Page | 376 |
| Page Count | 11 |
| File Format | |
| ISBN | 9781450334693 |
| DOI | 10.1145/2736277.2741663 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2015-05-18 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Firefox os Mobile security Web security |
| Content Type | Text |
| Resource Type | Article |
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