Race Condition Affecting thunderbird package, versions <0:68.8.0-1.amzn2


Severity

Recommended
critical

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1% (85th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-1679960
  • published27 Sept 2021
  • disclosed26 May 2020

Introduced: 26 May 2020

CVE-2020-12387  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:68.8.0-1.amzn2 or higher.
This issue was patched in ALAS2-2020-1429.

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.

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

CVSS Scores

version 3.1