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Mozilla developer Boris Zbarsky discovered that the debugger will work with some objects while bypassing XrayWrappers. This could lead to privilege escalation if the victim used the debugger to interact with a malicious page.

Security researcher Fabián Cuchietti discovered that it was possible to bypass the restriction on JavaScript execution in mail by embedding an <iframe> with a data: URL within a message. If the victim replied or forwarded the mail after receiving it, quoting it "in-line" using Thunderbird"s HTML mail editor, it would run the attached script. The running script would be rest ...

Security researcher Ash reported an issue where the extracted files for updates to existing files are not read only during the update process. This allows for the potential replacement or modification of these files during the update process if a malicious application is present on the local system.

Mozilla developer David Keeler reported that the crypto.generateCRFMRequest method did not correctly validate the key type of the KeyParams argument when generating ec-dual-use requests. This could lead to a crash and a denial of service (DOS) attack.

Mozilla developer Ehsan Akhgari reported a spoofing attack where the permission prompt for a WebRTC session can appear to be from a different site than its actual originating site if a timed navigation occurs during the prompt generation. This allows an attacker to potentially gain access to the webcam or microphone by masquerading as another site and gaining user permission through spoofing.

Security researchers Tim Philipp Schafers and Sebastian Neef , the team of Internetwache.org, reported a mechanism using JavaScript onbeforeunload events with page navigation to prevent users from closing a malicious page"s tab and causing the browser to become unresponsive. This allows for a denial of service (DOS) attack due to resource consumption and blocks the ability of users to exit the a ...

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 Masato Kinugawa discovered that if a web page is missing character set encoding information it can inherit character encoding across navigation into another domain from an earlier site. Only same-origin inheritance is allowed according to the HTML5 specification. This issue allows an attacker to add content that will be interpreted one way on the victim site, but which may the ...

Mozilla security developer Daniel Veditz discovered that <iframe sandbox> restrictions are not applied to an <object> element contained within a sand boxed iframe. This could allow content hosted within a sand boxed iframe to use <object> element to bypass the sandbox restrictions that should be applied.

Security researchers Tyson Smith and JesseSchwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a user-after-free when interacting with event listeners from the mListeners array. This leads to a potentially exploitable crash.

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