CVE-2018-7340

{"containers": {"cna": {"affected": [{"product": "Duo Network Gateway", "vendor": "Duo Security", "versions": [{"lessThan": "1.2.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Kelby Ludwig of Duo Security"}], "descriptions": [{"lang": "en", "value": "Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "description": "CWE-287: Improper Authentication", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2019-04-17T14:01:03.000Z", "orgId": "7cd4c57f-0a88-4dda-be53-70336b413766", "shortName": "duo"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"}, {"tags": ["x_refsource_MISC"], "url": "https://www.kb.cert.org/vuls/id/475445"}], "source": {"discovery": "INTERNAL"}, "title": "Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@duo.com", "ID": "CVE-2018-7340", "STATE": "PUBLIC", "TITLE": "Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Duo Network Gateway", "version": {"version_data": [{"affected": "<", "version_affected": "<", "version_value": "1.2.9"}]}}]}, "vendor_name": "Duo Security"}]}}, "credit": [{"lang": "eng", "value": "Kelby Ludwig of Duo Security"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-287: Improper Authentication"}]}]}, "references": {"reference_data": [{"name": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations", "refsource": "MISC", "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"}, {"name": "https://www.kb.cert.org/vuls/id/475445", "refsource": "MISC", "url": "https://www.kb.cert.org/vuls/id/475445"}]}, "source": {"discovery": "INTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T06:24:11.848Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.kb.cert.org/vuls/id/475445"}]}]}, "cveMetadata": {"assignerOrgId": "7cd4c57f-0a88-4dda-be53-70336b413766", "assignerShortName": "duo", "cveId": "CVE-2018-7340", "datePublished": "2019-04-17T14:01:03.000Z", "dateReserved": "2018-02-22T00:00:00.000Z", "dateUpdated": "2024-08-05T06:24:11.848Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Duo Network Gateway", "vendor": "Duo Security", "versions": [{"lessThan": "1.2.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@duo.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cisco:duo_network_gateway:*:*:*:*:*:*:*:*", "matchCriteriaId": "E0587F16-266D-4651-81CE-587705A53C3A", "versionEndIncluding": "1.2.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers."}, {"lang": "es", "value": "Duo Network Gateway versi\u00f3n 1.2.9 y anteriores pueden utilizar incorrectamente los resultados de las API de transversalidad y canonicalizaci\u00f3n de DOM de XML de tal manera que un atacante pueda manipular los datos SAML sin invalidar la firma criptogr\u00e1fica, lo que permite que el ataque omita la identificaci\u00f3n a los proveedores de servicio de SAML."}], "id": "CVE-2018-7340", "lastModified": "2026-06-17T02:03:03.433", "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}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.0"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "security@duo.com", "type": "Secondary"}], "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": "2019-04-17T15:29:00.640", "references": [{"source": "security@duo.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"}, {"source": "security@duo.com", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.kb.cert.org/vuls/id/475445"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.kb.cert.org/vuls/id/475445"}], "sourceIdentifier": "security@duo.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "security@duo.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-347"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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