CVE-2020-12421

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5

Description

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 This could have caused add-ons to become out-of-date silently without notification to the user.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

Overview

CVE ID
CVE-2020-12421

Assigner
security@mozilla.org

Vulnerability Status
Analyzed

Published Version
2020-07-09T15:15:12

Last Modified Date
2023-01-30T17:21:23

Weakness Enumerations

CWE	URL
CWE-295	http://cwe.mitre.org/data/definitions/295.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:a:mozilla:firefox::::::::	1	OR	78.0
cpe:2.3:a:mozilla:firefox_esr::::::::	1	OR	68.10.0
cpe:2.3:a:mozilla:thunderbird::::::::	1	OR	68.10.0

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
NONE

Base Score
6.5

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://www.mozilla.org/security/advisories/mfsa2020-24/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-25/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-26/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1308251	Issue Tracking Permissions Required Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
https://usn.ubuntu.com/4421-1/
https://security.gentoo.org/glsa/202007-10
https://security.gentoo.org/glsa/202007-09

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-12421
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12421

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:39:41				Added to TrackCVE
2022-12-04 19:19:43	2020-07-09T15:15Z	2020-07-09T15:15:12	CVE Published Date	updated
2022-12-04 19:19:43		2020-07-27T02:15:16	CVE Modified Date	updated
2022-12-04 19:19:43		Undergoing Analysis	Vulnerability Status	updated
2023-01-30 19:09:30		2023-01-30T17:21:23	CVE Modified Date	updated
2023-01-30 19:09:30	Undergoing Analysis	Analyzed	Vulnerability Status	updated