Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-12421

Improper Certificate Validation

Published: Jul 09, 2020 | Modified: Nov 21, 2024
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
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-12421
CWEhttps://cwe.mitre.org/data/definitions/295.html

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 This could have caused add-ons to become out-of-date silently without notification to the user.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

NameVendorStart VersionEnd Version
FirefoxMozilla*78.0 (excluding)
Firefox_esrMozilla*68.10.0 (excluding)
ThunderbirdMozilla*68.10.0 (excluding)
Red Hat Enterprise Linux 6RedHatfirefox-0:68.10.0-1.el6_10*
Red Hat Enterprise Linux 6RedHatthunderbird-0:68.10.0-1.el6_10*
Red Hat Enterprise Linux 7RedHatfirefox-0:68.10.0-1.el7_8*
Red Hat Enterprise Linux 7RedHatthunderbird-0:68.10.0-1.el7_8*
Red Hat Enterprise Linux 8RedHatfirefox-0:68.10.0-1.el8_2*
Red Hat Enterprise Linux 8RedHatthunderbird-0:68.10.0-1.el8_2*
Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsRedHatfirefox-0:68.10.0-1.el8_0*
Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsRedHatthunderbird-0:68.10.0-1.el8_0*
Red Hat Enterprise Linux 8.1 Extended Update SupportRedHatfirefox-0:68.10.0-1.el8_1*
Red Hat Enterprise Linux 8.1 Extended Update SupportRedHatthunderbird-0:68.10.0-1.el8_1*
FirefoxUbuntubionic*
FirefoxUbuntudevel*
FirefoxUbuntueoan*
FirefoxUbuntufocal*
FirefoxUbuntugroovy*
FirefoxUbuntuhirsute*
FirefoxUbuntuimpish*
FirefoxUbuntujammy*
FirefoxUbuntukinetic*
FirefoxUbuntulunar*
FirefoxUbuntumantic*
FirefoxUbuntunoble*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
Firefox-esrUbuntutrusty*
Firefox-esrUbuntuupstream*
Mozjs38Ubuntubionic*
Mozjs38Ubuntuesm-apps/bionic*
Mozjs38Ubuntuupstream*
Mozjs52Ubuntubionic*
Mozjs52Ubuntueoan*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs52Ubuntufocal*
Mozjs52Ubuntugroovy*
Mozjs52Ubuntuupstream*
Mozjs60Ubuntueoan*
Mozjs60Ubuntuupstream*
Mozjs68Ubuntuesm-infra/focal*
Mozjs68Ubuntufocal*
Mozjs68Ubuntugroovy*
Mozjs68Ubuntuupstream*
ThunderbirdUbuntubionic*
ThunderbirdUbuntudevel*
ThunderbirdUbuntueoan*
ThunderbirdUbuntufocal*
ThunderbirdUbuntugroovy*
ThunderbirdUbuntuhirsute*
ThunderbirdUbuntuimpish*
ThunderbirdUbuntujammy*
ThunderbirdUbuntukinetic*
ThunderbirdUbuntulunar*
ThunderbirdUbuntumantic*
ThunderbirdUbuntunoble*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuupstream*
ThunderbirdUbuntuxenial*

Potential Mitigations

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use