A new security flaw has been identified in the Firefox browser. Its exploitation allows bypassing the software’s security policy by allowing a web page to access trapped and steal potentially sensitive data on other websites consulted.
Mozilla Firefox 41.0.1 and lower versions
The affected users should quickly install the new software version (41.0.2 or higher for Firefox) via the update function (button “Open menu” and then “About Firefox” “?” ) to secure their computer and prevent any hostile exploitation of this vulnerability by malicious individuals, viruses or other malicious programs.
-> Mozilla Foundation Security Advisory 2015-115 (in English)
-> Mozilla Security Blog – Firefox exploit found in the wild (in English)
-> FAQ: how to tell if this software is installed on my computer
-> FAQ : how to determine your software version number?
-> Free subscription to the letter Secuser Security to be informed by email of new vulnerabilities