VulnerabilityModified
CVE-2020-12421
This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
MEDIUM 6.5EPSS 1.84%
Does this matter?
Lower severity and a low EPSS score (1.84%). Track it; it rarely justifies an emergency change on its own.
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 This could have caused add-ons to become out-of-date silently without notification to the user.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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 1.84% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird · canonical/ubuntu linux
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
- https://bugzilla.mozilla.org/show_bug.cgi?id=1308251Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202007-09Third Party Advisory
- https://security.gentoo.org/glsa/202007-10Third Party Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- 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
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
- https://bugzilla.mozilla.org/show_bug.cgi?id=1308251Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202007-09Third Party Advisory
- https://security.gentoo.org/glsa/202007-10Third Party Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.