Improper Restriction of Rendered UI Layers or Frames Affecting thunderbird package, versions <1:78.5.0-1
Threat Intelligence
EPSS
0.12% (48th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN12-THUNDERBIRD-1561375
- published 18 Nov 2020
- disclosed 9 Dec 2020
Introduced: 18 Nov 2020
CVE-2020-26953 Open this link in a new tabHow to fix?
Upgrade Debian:12 thunderbird to version 1:78.5.0-1 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:12 relevant fixed versions and status.
It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
CVSS Scores
version 3.1