CVE-2021-38506

Description

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

References

https://www.mozilla.org/security/advisories/mfsa2021-50/

https://www.mozilla.org/security/advisories/mfsa2021-49/

https://www.mozilla.org/security/advisories/mfsa2021-48/

https://www.debian.org/security/2022/dsa-5034

https://www.debian.org/security/2021/dsa-5026

https://security.gentoo.org/glsa/202208-14

https://security.gentoo.org/glsa/202202-03

https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html

https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1730750

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3