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

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.15% (51st percentile)
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NVD
4.3 medium
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SUSE
4.3 medium
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Red Hat
6.1 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-THUNDERBIRD-1912462
  • published 3 Nov 2021
  • disclosed 8 Dec 2021
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Introduced: 3 Nov 2021

CVE-2021-38509 Open this link in a new tab
CWE-1021 Open this link 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.