CVE-2021-23960 Affecting firefox package, versions <85.0-1


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.21% (61st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-1065067
  • published27 Jan 2021
  • disclosed26 Feb 2021

Introduced: 27 Jan 2021

CVE-2021-23960  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 85.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS Scores

version 3.1