CVE-2020-12421

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 This could have caused add-ons to become out-of-date silently without notification to the user.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

• CWE-295

• 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

Published

Jul 9, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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