Mozilla Foundation Security Advisory 2014-82
Accessing cross-origin objects via the Alarms API
- Announced
- October 14, 2014
- Reporter
- Boris Zbarsky
- Impact
- High
- Products
- Firefox, Firefox ESR
- Fixed in
-
- Firefox 33
- Firefox ESR 31.2
Description
Mozilla developer Boris Zbarsky reported that a malicious app could use the AlarmAPI to read the values of cross-origin references, such as an iframe's location object, as part of an alarm's JSON data. This allows a malicious app to bypass same-origin policy.
Users are only at risk for this issue if a web app has been installed.