CVE-2020-12421
First published: Tue Jun 30 2020(Updated: )
Last updated 24 July 2024
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox ESR | <68.10 | 68.10 |
| Mozilla Thunderbird | <78 | 78 |
| Mozilla Thunderbird | <68.10 | 68.10 |
| Mozilla Firefox | <78 | 78 |
| Mozilla Firefox | <78.0 | |
| Mozilla Firefox ESR | <68.10.0 | |
| Mozilla Thunderbird | <68.10.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Canonical Ubuntu Linux | =20.04 | |
| debian/firefox | 132.0.2-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.4.0esr-1~deb11u1 128.3.1esr-1~deb12u1 128.4.0esr-1~deb12u1 128.3.1esr-2 128.4.0esr-1 | |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.4.3esr-1~deb11u1 1:115.16.0esr-1~deb12u1 1:128.4.0esr-1~deb12u1 1:128.4.2esr-1 1:128.4.3esr-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1308251
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- https://www.mozilla.org/security/advisories/mfsa2020-25/
- https://www.mozilla.org/security/advisories/mfsa2020-26/
- 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/202007-09
- https://security.gentoo.org/glsa/202007-10
- https://launchpad.net/bugs/cve/CVE-2020-12421
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-25/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-29/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12416
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-24/#CVE-2020-12421
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-25/#CVE-2020-12421
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/#CVE-2020-12421
- https://security-tracker.debian.org/tracker/CVE-2020-12421
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12421
- https://nvd.nist.gov/vuln/detail/CVE-2020-12421
- https://ubuntu.com/security/CVE-2020-12421
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2020-12421?
CVE-2020-12421 is a vulnerability that affects Mozilla Firefox and Thunderbird.
How does CVE-2020-12421 affect add-on updates?
CVE-2020-12421 can cause add-on updates to fail if the certificate chain terminates in non-built-in-roots.
Which versions of Mozilla Firefox are affected by CVE-2020-12421?
Mozilla Firefox versions up to and excluding 78 are affected by CVE-2020-12421.
Which versions of Thunderbird are affected by CVE-2020-12421?
Thunderbird versions up to and excluding 68.10 and 78 are affected by CVE-2020-12421.
What is the severity rating of CVE-2020-12421?
CVE-2020-12421 has a severity rating of medium.
How can I fix the CVE-2020-12421 vulnerability?
Update your Mozilla Firefox or Thunderbird to a version that includes the fix provided by Mozilla.
Where can I find more information about CVE-2020-12421?
You can find more information about CVE-2020-12421 on the Mozilla website: [link].
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- vendor/mozilla
- canonical/mozilla firefox esr
- canonical/mozilla thunderbird
- canonical/mozilla firefox
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/19.10
- version/canonical ubuntu linux/20.04
- package-manager/debian