{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-25636", "assignerOrgId": "4fe7d05b-1353-44cc-8b7a-1e416936dff2", "assignerShortName": "Document Fdn.", "dateUpdated": "2024-08-03T20:11:27.083Z", "dateReserved": "2021-01-19T00:00:00", "datePublished": "2022-02-22T00:00:00"}, "containers": {"cna": {"title": "Incorrect trust validation of signature with ambiguous KeyInfo children", "providerMetadata": {"orgId": "4fe7d05b-1353-44cc-8b7a-1e416936dff2", "shortName": "Document Fdn.", "dateUpdated": "2023-03-26T00:00:00"}, "descriptions": [{"lang": "en", "value": "LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to contain both \"X509Data\" and \"KeyValue\" children of the \"KeyInfo\" tag, which when opened caused LibreOffice to verify using the \"KeyValue\" but to report verification with the unrelated \"X509Data\" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5."}], "affected": [{"vendor": "The Document Foundation", "product": "LibreOffice", "versions": [{"version": "7.2", "status": "affected", "lessThan": "7.2.5", "versionType": "custom"}]}], "references": [{"url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25636/"}, {"name": "FEDORA-2022-3bbe89c20f", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NE6UIBCPZWRBWPSEGJOPNWPPT3CCMVH2/"}, {"name": "[debian-lts-announce] 20230326 [SECURITY] [DLA 3368-1] libreoffice security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html"}], "credits": [{"lang": "en", "value": "Thanks to NDS of Ruhr University Bochum for discovering and reporting this problem."}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-347 Improper Verification of Cryptographic Signature", "cweId": "CWE-347"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"discovery": "EXTERNAL"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:11:27.083Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25636/", "tags": ["x_transferred"]}, {"name": "FEDORA-2022-3bbe89c20f", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NE6UIBCPZWRBWPSEGJOPNWPPT3CCMVH2/"}, {"name": "[debian-lts-announce] 20230326 [SECURITY] [DLA 3368-1] libreoffice security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html"}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DFE4A1B-0C41-4294-9EC5-5DC94366C492", "versionEndExcluding": "7.2.5", "versionStartIncluding": "7.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to contain both \"X509Data\" and \"KeyValue\" children of the \"KeyInfo\" tag, which when opened caused LibreOffice to verify using the \"KeyValue\" but to report verification with the unrelated \"X509Data\" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5."}, {"lang": "es", "value": "LibreOffice soporta firmas digitales de documentos ODF y macros dentro de documentos, presentando ayudas visuales de que no ha sido producido ninguna alteraci\u00f3n del documento desde la \u00faltima firma y que la firma es v\u00e1lida. Una vulnerabilidad de comprobaci\u00f3n inapropiada de certificados en LibreOffice permit\u00eda a un atacante crear un documento ODF firmado digitalmente, manipulando el flujo documentsignatures.xml o macrosignatures.xml dentro del documento para que contuviera los hijos \"X509Data\" y \"KeyValue\" de la etiqueta \"KeyInfo\", que cuando era abierta causaba que LibreOffice verificara usando el \"KeyValue\" pero informara de la verificaci\u00f3n con el valor \"X509Data\" no relacionado. Este problema afecta a: Document Foundation LibreOffice versiones 7.2  anteriores a 7.2.5"}], "id": "CVE-2021-25636", "lastModified": "2024-11-21T05:55:11.370", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-24T15:15:21.813", "references": [{"source": "security@documentfoundation.org", "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html"}, {"source": "security@documentfoundation.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NE6UIBCPZWRBWPSEGJOPNWPPT3CCMVH2/"}, {"source": "security@documentfoundation.org", "tags": ["Vendor Advisory"], "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25636/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NE6UIBCPZWRBWPSEGJOPNWPPT3CCMVH2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25636/"}], "sourceIdentifier": "security@documentfoundation.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security@documentfoundation.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2022:7461", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "libreoffice-1:6.4.7.2-11.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}], "bugzilla": {"description": "libreoffice: Incorrect trust validation of signature with ambiguous KeyInfo children", "id": "2056955", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2056955"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-295", "details": ["LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to contain both \"X509Data\" and \"KeyValue\" children of the \"KeyInfo\" tag, which when opened caused LibreOffice to verify using the \"KeyValue\" but to report verification with the unrelated \"X509Data\" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5.", "A improper certificate validation flaw was found in LibreOffice allowing an attacker to manipulate a digitally signed ODF document to appear that no alteration of the document occurred since the last signing and that the signature is valid."], "name": "CVE-2021-25636", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "libreoffice:flatpak/libreoffice", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-02-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-25636\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-25636\nhttps://www.libreoffice.org/about-us/security/advisories/cve-2021-25636/"], "threat_severity": "Moderate"}