Access of Resource Using Incompatible Type ('Type Confusion') Affecting thunderbird package, versions <0:78.7.0-1.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.26% (66th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-1694402
  • published27 Sept 2021
  • disclosed26 Feb 2021

Introduced: 26 Feb 2021

CVE-2021-23954  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:78.7.0-1.amzn2 or higher.
This issue was patched in ALAS2-2021-1603.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS Scores

version 3.1