Description

It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1656741

https://www.mozilla.org/security/advisories/mfsa2020-50/

https://www.mozilla.org/security/advisories/mfsa2020-51/

https://www.mozilla.org/security/advisories/mfsa2020-52/

Details

Risk Information

CVSS v2

CVSS v3