CVE-2021-23968

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"status": "affected", "version": "< 86"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"status": "affected", "version": "< 78.8"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"status": "affected", "version": "< 78.8"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "89580DC6-183F-46F0-A27E-4E16D6B10EB6", "versionEndExcluding": "86.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A523AED-F145-4D51-BF78-95B61B8A0B34", "versionEndExcluding": "78.8", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "3ABA16AF-38C2-4445-B41F-9228C97A89C1", "versionEndExcluding": "78.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8."}, {"lang": "es", "value": "Si la Pol\u00edtica de Seguridad de Contenido bloqueaba la navegaci\u00f3n de tramas, el destino completo de un redireccionamiento servido en la trama se reportaba en el informe de infracci\u00f3n;&#xa0;a diferencia del URI de la trama original.&#xa0;Esto podr\u00eda ser usado para filtrar informaci\u00f3n confidencial contenida en dichos URI.&#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 86, Thunderbird versiones anteriores a 78,8 y Firefox ESR versiones anteriores a 78,8"}], "id": "CVE-2021-23968", "lastModified": "2026-06-17T03:39:04.983", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/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": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-26T02:15:12.820", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Permissions Required", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1687342"}, {"source": "security@mozilla.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-09"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-10"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4866"}, {"source": "security@mozilla.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-07/"}, {"source": "security@mozilla.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-08/"}, {"source": "security@mozilla.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-09/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Permissions Required", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1687342"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-09"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4866"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-07/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-08/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-09/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-209"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Ademar Nowasky Junior as the original reporter.", "affected_release": [{"advisory": "RHSA-2021:0656", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.8.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0661", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.8.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0655", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.8.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0657", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.8.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0658", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.8.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0659", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.8.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0660", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.8.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-02-24T00:00:00Z"}, {"advisory": "RHSA-2021:0662", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.8.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-02-24T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Content Security Policy violation report could have contained the destination of a redirect", "id": "1932110", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1932110"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-200", "details": ["If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8."], "name": "CVE-2021-23968", "package_state": [{"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": "2021-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-23968\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-23968\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2021-08/#CVE-2021-23968"], "threat_severity": "Important"}

{}