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Mozilla community member Federico Lanusse reported a mechanism where a web worker can violate same-origin policy and bypass cross-origin checks through XMLHttpRequest. This could allow for cross-site scripting (XSS) attacks by web workers.

Security researcher Georgi Guninski reported an issue with Java applets where in some circumstances the applet could access files on the local system when loaded using the a file:/// URI and violate file origin policy due to interaction with the codebase parameter. This affects applets running on the local file system. Mozilla developer John Schoenick later discovered that fixes for this issue ...

Mozilla developers 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 use-after-free problem in the Animation Manager during the cloning of stylesheets. This can lead to a potentially exploitable crash.

Mozilla community member Ms2ger found a mechanism where a new Javascript object with a compartment is uninitialized could be entered through web content. When the scope for this object is called, it leads to a potentially exploitable crash.

Security researcher Sachin Shinde reported that moving certain XBL-backed nodes from a document into the replacement document created by document.open() can cause a JavaScript compartment mismatch which can often lead to exploitable conditions. Starting with Firefox 20 this condition was turned into a run-time assertion that would crash the browser in an unexploitable way, and in Firefox 24 th ...

Security researcher Aki Helin reported that combining lists, floats, and multiple columns could trigger a potentially exploitable buffer overflow.

Security researcher Nils reported two potentially exploitable memory corruption bugs involving scrolling. The first was a use-after-free condition due to scrolling an image document. The second was due to nodes in a range request being added as children of two different parents.

Mozilla developer Boris Zbarsky reported that user-defined getters on DOM proxies would incorrectly get the expando object as this . It is unlikely that this is directly exploitable but could lead to JavaScript client or add-on code making incorrect security sensitive decisions based on hacker supplied values.

The host is missing a critical security update according to Adobe advisory, APSB12-02. The update is required to fix multiple memory corruption vulnerabilities. The flaws are present in the application, which fails to sanitize user supplied input. Successful exploitation could allow attackers to execute arbitrary code.


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