{"containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "84", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.6", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "78.6", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6."}], "problemTypes": [{"descriptions": [{"description": "CSS Sanitizer performed incorrect sanitization", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-01-07T13:53:21", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-54/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-56/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-55/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1680084"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2020-26973", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "84"}]}}, {"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "78.6"}]}}, {"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "78.6"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CSS Sanitizer performed incorrect sanitization"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2020-54/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2020-54/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2020-56/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2020-56/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2020-55/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2020-55/"}, {"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1680084", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1680084"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T16:03:23.261Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-54/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-56/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-55/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1680084"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2020-26973", "datePublished": "2021-01-07T13:53:21", "dateReserved": "2020-10-12T00:00:00", "dateUpdated": "2024-08-04T16:03:23.261Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "85154F06-6654-493F-8630-38637ED7D8D0", "versionEndExcluding": "84.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "4535E34E-E949-48ED-A8F5-7D93B4731EA6", "versionEndExcluding": "78.6.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "048CBDDB-2C1B-415B-8DF9-54C002236180", "versionEndExcluding": "78.6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6."}, {"lang": "es", "value": "Determinadas entradas hacia el CSS Sanitizer lo confundieron, resultando en una eliminaci\u00f3n de componentes incorrectos.&#xa0;Esto podr\u00eda haber sido usado como una omisi\u00f3n de saneo.&#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 84, Thunderbird versiones anteriores a 78,6 y Firefox ESR versiones anteriores a 78,6"}], "id": "CVE-2020-26973", "lastModified": "2021-01-11T21:41:32.003", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-01-07T14:15:11.893", "references": [{"source": "security@mozilla.org", "tags": ["Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1680084"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-54/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-55/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-56/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Kai Engert as the original reporter.", "affected_release": [{"advisory": "RHSA-2020:5561", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.6.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-12-16T00:00:00Z"}, {"advisory": "RHSA-2020:5618", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.6.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-12-17T00:00:00Z"}, {"advisory": "RHSA-2020:5562", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.6.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-12-16T00:00:00Z"}, {"advisory": "RHSA-2020:5624", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.6.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-12-17T00:00:00Z"}, {"advisory": "RHSA-2020:5565", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "firefox-0:78.6.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-12-16T00:00:00Z"}, {"advisory": "RHSA-2020:5645", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "thunderbird-0:78.6.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-12-21T00:00:00Z"}, {"advisory": "RHSA-2020:5564", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.6.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-12-16T00:00:00Z"}, {"advisory": "RHSA-2020:5644", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.6.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-12-21T00:00:00Z"}, {"advisory": "RHSA-2020:5563", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.6.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2020-12-16T00:00:00Z"}, {"advisory": "RHSA-2020:5622", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.6.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2020-12-17T00:00:00Z"}], "bugzilla": {"description": "Mozilla: CSS Sanitizer performed incorrect sanitization", "id": "1908023", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1908023"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-20", "details": ["Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.", "The Mozilla Foundation Security Advisory describes this flaw as:\nCertain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass."], "name": "CVE-2020-26973", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2020-12-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-26973\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-26973\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2020-55/#CVE-2020-26973"], "threat_severity": "Important", "upstream_fix": "thunderbird 78.6, firefox 78.6"}