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CVE-2020-12421

CVSS v3.1 6.5 (Medium)
65% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 0.52 % (77th)
0.52% Progress
Affected Products 4
Advisories 31
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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 This could have caused add-ons to become out-of-date silently without notification to the user.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.

Weaknesses
CWE-295
Improper Certificate Validation
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2020-07-09 15:15:12
(4 years ago)
Updated Date
2023-01-30 17:21:23
(19 months ago)

Affected Products

Canonical

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 78.0 version cpe:2.3:a:mozilla:firefox < 78.0
  Mozilla Firefox Esr prior 68.10.0 version cpe:2.3:a:mozilla:firefox_esr < 68.10.0
  Mozilla Thunderbird prior 68.10.0 version cpe:2.3:a:mozilla:thunderbird < 68.10.0

Configuration #2

    CPE23 From Up To
  Canonical Ubuntu Linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm
  Canonical Ubuntu Linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts
  Canonical Ubuntu Linux 19.10 cpe:2.3:o:canonical:ubuntu_linux:19.10
  Canonical Ubuntu Linux 20.04 cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts