Improper Certificate Validation Affecting firefox package, versions <78.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.51% (78th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-574997
  • published1 Jul 2020
  • disclosed9 Jul 2020

Introduced: 1 Jul 2020

CVE-2020-12421  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 78.0-1 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.

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

CVSS Scores

version 3.1