Improper Restriction of Rendered UI Layers or Frames Affecting firefox package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.62% (80th percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-1910357
  • published3 Nov 2021
  • disclosed8 Dec 2021

Introduced: 3 Nov 2021

CVE-2021-38506  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:16.04 firefox.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1