Improper Restriction of Rendered UI Layers or Frames Affecting firefox-esr package, versions <115.6.0esr-1~deb11u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-DEBIAN11-FIREFOXESR-6131851
  • published20 Dec 2023
  • disclosed19 Dec 2023

Introduced: 19 Dec 2023

CVE-2023-6867  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

Upgrade Debian:11 firefox-esr to version 115.6.0esr-1~deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

The timing of a button click causing a popup to disappear was approximately the same length as 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 ESR < 115.6 and Firefox < 121.

CVSS Scores

version 3.1