WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped.
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Firefox < 95.ĭocuments loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. Other operating systems are unaffected.*. *This bug only affects Firefox for Android. When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. Using the Location API in a loop could have caused severe application hangs and crashes. It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. If you want to see a complete summary for this CPE, please contact us.
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