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Security researcher Juri Aedla , via TippingPoint"s Pwn2Own contest, reported that TypedArrayObject does not handle the case where ArrayBuffer objects are neutered, setting their length to zero while still in use. This leads to out-of-bounds reads and writes into the JavaScript heap, allowing for arbitrary code execution.

Security researcher George Hotz , via TippingPoint"s Pwn2Own contest, discovered an issue where values are copied from an array into a second, neutered array. This allows for an out-of-bounds write into memory, causing an exploitable crash leading to arbitrary code execution.

Mozilla developers and community identified identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code.

Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team used the Address Sanitizer tool to discover a fixed offset out of bounds read issue while decoding specifically formatted JPG format images. This causes a non-exploitable crash.

Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team used the Address Sanitizer tool to discover a buffer overflow when a script uses a non-XBL object as an XBL object because the XBL status of the object is not properly validated. The resulting memory corruption is potentially exploitable.

Security researcher Mariusz Mlynski discovered an issue where sites that have been given notification permissions by a user can bypass security checks on source components for the Web Notification API. This allows for script to be run in a privileged context through notifications, leading to arbitrary code execution on these sites.

Mozilla security researcher moz_bug_r_a4 reported a method to use browser navigations through history to load a website with that page"s baseURI property pointing to that of another site instead of the seemingly loaded one. The user will continue to see the incorrect site in the addressbar of the browser. This allows for a cross-site scripting (XSS) attack or the theft of data through a phishing ...

Security researcher Nils discovered a use-after-free error in which the imgLoader object is freed while an image is being resized. This results in a potentially exploitable crash.

Security researchers Tyson Smith and Jesse Schwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a use-after-free during host resolution in some circumstances. This leads to a potentially exploitable crash.

Mozilla developers and community identified identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code.


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