CVE-2021-23960 The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


Threat Intelligence

EPSS
0.42% (62nd percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-1065168
  • published27 Jan 2021
  • disclosed26 Feb 2021

Introduced: 27 Jan 2021

CVE-2021-23960  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu.

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.