Improper Restriction of Rendered UI Layers or Frames Affecting thunderbird package, versions <1:91.3.0-1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.88% (84th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIANUNSTABLE-THUNDERBIRD-1912462
  • published3 Nov 2021
  • disclosed8 Dec 2021

Introduced: 3 Nov 2021

CVE-2021-38509  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

Upgrade Debian:unstable thunderbird to version 1:91.3.0-1 or higher.

NVD Description

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

Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVSS Scores

version 3.1