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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.
Security researcher Nils used the Address Sanitizer tool while fuzzing to discover a use-after-free problem in the table editing user interface of the editor during garbage collection. This leads to a potentially exploitable crash.
Security researchers Tyson Smith and JesseSchwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a mechanism where inserting an ordered list into a document through script could lead to a potentially exploitable crash that can be triggered by web content.
Firefox user Sijie Xia reported that if a user explicitly removes the trust for extended validation (EV) capable root certificates in the certificate manager, the change is not properly used when validating EV certificates, causing the setting to be ignored. This removes the ability of users to explicitly untrust root certificates from specific certificate authorities.
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 in the functions for synthetic mouse movement handling. Security researcher Atte Kettunen from OUSPG also reported a variant of the same flaw. This issue leads to a potentially exploitable crash.
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