CVE-2020-12421

{"containers": {"cna": {"affected": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "68.10", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "78", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "68.10.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "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 This could have caused add-ons to become out-of-date silently without notification to the user. 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{"affected": [{"affectedData": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "68.10", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "78", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "68.10.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "09FA5356-4843-47D3-964C-86A6C3859F3C", "versionEndExcluding": "78.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "EFD35B04-283B-4EF1-9D63-6E023A49DDCA", "versionEndExcluding": "68.10.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "A57C62F6-E2C3-4CDD-8518-EF2DB3DCD4DA", "versionEndExcluding": "68.10.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*", "matchCriteriaId": "A31C8344-3E02-4EB8-8BD8-4C84B7959624", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Cuando se llevan a cabo actualizaciones de add-on, las cadenas de certificados que terminan en non-built-in-roots fueron rechazadas (incluso si fueron agregadas leg\u00edtimamente por un administrador). Esto podr\u00eda haber causado que los add-ons se desactualicen silenciosamente sin notificaci\u00f3n al usuario. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.10, Firefox versiones anteriores a 78 y Thunderbird versiones anteriores a 68.10.0"}], "id": "CVE-2020-12421", "lastModified": "2026-06-17T02:51:48.340", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-09T15:15:12.053", "references": [{"source": "security@mozilla.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html"}, {"source": "security@mozilla.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html"}, {"source": "security@mozilla.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"}, {"source": "security@mozilla.org", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"}, {"source": "security@mozilla.org", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1308251"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-09"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-10"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4421-1/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-24/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-25/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-26/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1308251"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-09"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202007-10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4421-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-24/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-25/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-26/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Chuck Harmston and Robert Hardy as the original reporters.", "affected_release": [{"advisory": "RHSA-2020:2824", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:68.10.0-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:2966", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:68.10.0-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-07-16T00:00:00Z"}, {"advisory": "RHSA-2020:2827", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:68.10.0-1.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:2906", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:68.10.0-1.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-14T00:00:00Z"}, {"advisory": "RHSA-2020:2828", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:68.10.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:3038", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:68.10.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:2825", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "firefox-0:68.10.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:3046", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "thunderbird-0:68.10.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:2826", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:68.10.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-06T00:00:00Z"}, {"advisory": "RHSA-2020:2907", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:68.10.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-14T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Add-On updates did not respect the same certificate trust rules as software updates", "id": "1853018", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1853018"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-296", "details": ["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.", "The Mozilla Foundation Security Advisory describes this flaw as:\nWhen 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."], "name": "CVE-2020-12421", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2020-06-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-12421\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-12421\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2020-25/#CVE-2020-12421"], "threat_severity": "Moderate"}

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