Improper Restriction of Rendered UI Layers or Frames Affecting Firefox-ESR package, versions [,115.5)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.17% (55th percentile)

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  • Snyk IDSNYK-UNMANAGED-FIREFOXESR-6071725
  • published22 Nov 2023
  • disclosed21 Nov 2023
  • creditturistu

Introduced: 21 Nov 2023

CVE-2023-6208  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

Upgrade Firefox-ESR to version 115.5 or higher.

Overview

Affected versions of this package are vulnerable to Improper Restriction of Rendered UI Layers or Frames when the Selection API is used. Contents are mistakenly copied into the X11 primary selection, which serves as a temporary storage similar to the clipboard. An attacker can gain access to sensitive information by exploiting this erroneous copying. This is only exploitable if the system is running on X11. Other systems are unaffected.

CVSS Scores

version 3.1