Improper Privilege Management The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


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EPSS
0.26% (50th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-1252018
  • published20 Apr 2021
  • disclosed24 Jun 2021

Introduced: 20 Apr 2021

CVE-2021-23999  (opens in a new tab)
CWE-269  (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.

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.