CVE Vulnerabilities

CVE-2020-12421

Improper Certificate Validation

Published: Jul 09, 2020 | Modified: Jan 30, 2023
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
6.1 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Ubuntu
MEDIUM

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 This could have caused add-ons to become out-of-date silently without notification to the user.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

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

Name Vendor Start Version End Version
Firefox Mozilla * 78.0 (excluding)
Firefox_esr Mozilla * 68.10.0 (excluding)
Thunderbird Mozilla * 68.10.0 (excluding)
Red Hat Enterprise Linux 6 RedHat firefox-0:68.10.0-1.el6_10 *
Red Hat Enterprise Linux 6 RedHat thunderbird-0:68.10.0-1.el6_10 *
Red Hat Enterprise Linux 7 RedHat firefox-0:68.10.0-1.el7_8 *
Red Hat Enterprise Linux 7 RedHat thunderbird-0:68.10.0-1.el7_8 *
Red Hat Enterprise Linux 8 RedHat firefox-0:68.10.0-1.el8_2 *
Red Hat Enterprise Linux 8 RedHat thunderbird-0:68.10.0-1.el8_2 *
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions RedHat firefox-0:68.10.0-1.el8_0 *
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions RedHat thunderbird-0:68.10.0-1.el8_0 *
Red Hat Enterprise Linux 8.1 Extended Update Support RedHat firefox-0:68.10.0-1.el8_1 *
Red Hat Enterprise Linux 8.1 Extended Update Support RedHat thunderbird-0:68.10.0-1.el8_1 *
Firefox Ubuntu bionic *
Firefox Ubuntu devel *
Firefox Ubuntu eoan *
Firefox Ubuntu focal *
Firefox Ubuntu groovy *
Firefox Ubuntu hirsute *
Firefox Ubuntu impish *
Firefox Ubuntu jammy *
Firefox Ubuntu kinetic *
Firefox Ubuntu lunar *
Firefox Ubuntu mantic *
Firefox Ubuntu noble *
Firefox Ubuntu trusty *
Firefox Ubuntu upstream *
Firefox Ubuntu xenial *
Firefox-esr Ubuntu trusty *
Firefox-esr Ubuntu upstream *
Mozjs38 Ubuntu bionic *
Mozjs38 Ubuntu esm-apps/bionic *
Mozjs38 Ubuntu upstream *
Mozjs52 Ubuntu bionic *
Mozjs52 Ubuntu eoan *
Mozjs52 Ubuntu esm-apps/focal *
Mozjs52 Ubuntu esm-infra/bionic *
Mozjs52 Ubuntu focal *
Mozjs52 Ubuntu groovy *
Mozjs52 Ubuntu upstream *
Mozjs60 Ubuntu eoan *
Mozjs60 Ubuntu upstream *
Mozjs68 Ubuntu focal *
Mozjs68 Ubuntu groovy *
Mozjs68 Ubuntu upstream *
Thunderbird Ubuntu bionic *
Thunderbird Ubuntu devel *
Thunderbird Ubuntu eoan *
Thunderbird Ubuntu focal *
Thunderbird Ubuntu groovy *
Thunderbird Ubuntu hirsute *
Thunderbird Ubuntu impish *
Thunderbird Ubuntu jammy *
Thunderbird Ubuntu kinetic *
Thunderbird Ubuntu lunar *
Thunderbird Ubuntu mantic *
Thunderbird Ubuntu noble *
Thunderbird Ubuntu trusty *
Thunderbird Ubuntu upstream *
Thunderbird Ubuntu xenial *

Potential Mitigations

References