Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


Threat Intelligence

EPSS
0.08% (25th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-2315345
  • published10 Dec 2021
  • disclosed16 Feb 2023

Introduced: 10 Dec 2021

CVE-2021-43529  (opens in a new tab)
CWE-787  (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.

Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.