CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
Percentile
76.8%
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 This could have caused add-ons to become out-of-date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.
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | firefox | < 78.0.1+build1-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | firefox | < 78.0.1+build1-0ubuntu0.19.10.1 | UNKNOWN |
ubuntu | 20.04 | noarch | firefox | < 78.0.1+build1-0ubuntu0.20.04.1 | UNKNOWN |
ubuntu | 20.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 21.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 21.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 22.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 22.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 23.04 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
ubuntu | 23.10 | noarch | firefox | < 78.0.1+build1-0ubuntu1 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2020-12421
nvd.nist.gov/vuln/detail/CVE-2020-12421
security-tracker.debian.org/tracker/CVE-2020-12421
ubuntu.com/security/notices/USN-4408-1
ubuntu.com/security/notices/USN-4421-1
www.cve.org/CVERecord?id=CVE-2020-12421
www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12421
www.mozilla.org/en-US/security/advisories/mfsa2020-25/#CVE-2020-12421
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
Percentile
76.8%