CVE-2023-6206 Information

Description

The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120 Firefox < 115.5 and Thunderbird < 115.5.0.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1857430 https://www.mozilla.org/security/advisories/mfsa2023-49/ https://www.mozilla.org/security/advisories/mfsa2023-50/ https://www.mozilla.org/security/advisories/mfsa2023-52/