By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, Firefox ESR < 78.2, and Firefox for Android < 80.

By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, Firefox ESR < 78.2, and Firefox for Android < 80.

Security update for MozillaThunderbird

Mozilla: Integer overflow in nsJPEGEncoder::emptyOutputBuffer Mozilla: WebRTC permission prompt could have been bypassed by a compromised content process Mozilla: Out of bound read in Date.parse() Mozilla: X-Frame-Options bypass using object or embed tags Mozilla: Bypassing iframe sandbox when allowing popups Mozilla: Custom cursor can overlay user interface Mozilla: Type confusion for special arguments in IonMonkey Mozilla: Overriding file type when saving to disk Mozilla: Attacker-induced prompt for extension installation Mozilla: Use-After-Free when aborting an operation

Security update for MozillaFirefox

Affected: Ubuntu:16.04:LTS: firefox, Ubuntu:18.04:LTS: firefox, Ubuntu:18.04:LTS: thunderbird, Ubuntu:18.04:LTS: mozjs52, Ubuntu:18.04:LTS: mozjs38, Ubuntu:20.04:LTS: firefox, Ubuntu:20.04:LTS: thunderbird, Ubuntu:20.04:LTS: mozjs68, Ubuntu:20.04:LTS: mozjs52

By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, Firefox ESR < 78.2, and Firefox for Android < 80.