#### VULNERABILITY DETAILS
The fix for issue 546677 is insufficient to protect against overriding internal extensions code -- it is still possible to take over the built-in extension system with a combination of getters and setters. This allows web content to gain access to native functions that may be misused, for example |user_gestures.RunWithUserGesture| can be leveraged to create new pages at an arbitrary javascript execution point, effectively bypassing ScopedPageLoadDeferrer.
#### VERSION
Chrome 48.0.2564.116 (Stable)
Chrome 49.0.2623.64 (Beta)
Chrome 50.0.2657.0 (Dev)
Chromium 50.0.2660.0 + Pepper Flash (Release build compiled today)
附件:[CVE-2016-1672](http://paper.seebug.org/papers/Archive/poc/CVE-2016-1672.zip)
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