Out-of-bounds Write Affecting thunderbird package, versions <0:78.6.0-1.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.61% (80th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-1693019
  • published27 Sept 2021
  • disclosed7 Jan 2021

Introduced: 7 Jan 2021

CVE-2020-26974  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:78.6.0-1.amzn2 or higher.
This issue was patched in ALAS2-2021-1586.

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.

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

CVSS Scores

version 3.1