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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:vmware:nsx-v_edge:*:*:*:*:*:*:*:*", "matchCriteriaId": "925CD5F5-66D2-4F56-A165-191F04FF7430", "versionEndExcluding": "6.2.8", "versionStartIncluding": "6.2.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:vmware:nsx-v_edge:*:*:*:*:*:*:*:*", "matchCriteriaId": "203CDE09-854A-49B3-B38B-29D1AB6F4A32", "versionEndExcluding": "6.3.3", "versionStartIncluding": "6.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The implementation of the OSPF protocol in VMware NSX-V Edge 6.2.x prior to 6.2.8 and NSX-V Edge 6.3.x prior to 6.3.3 doesn't correctly handle the link-state advertisement (LSA). A rogue LSA may exploit this issue resulting in continuous sending of LSAs between two routers eventually going in loop or loss of connectivity."}, {"lang": "es", "value": "La implementaci\u00f3n del protocolo OSPF en VMware NSX-V Edge en versiones 6.2.x anteriores a la 6.2.8 y NSX-V Edge en versiones 6.3.x anteriores a la 6.3.3 no gestiona correctamente el LSA (link-state advertisement). Un LSA no autorizado podr\u00eda explotar este problema, resultando en el env\u00edo continuo de LSA entre dos routers, lo que acabar\u00eda por provocar un bucle o la p\u00e9rdida de la conectividad."}], "id": "CVE-2017-4920", "lastModified": "2026-05-13T00:24:29.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-12-05T21:29:00.293", "references": [{"source": "security@vmware.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/100277"}, {"source": "security@vmware.com", "tags": ["Vendor Advisory"], "url": "https://www.vmware.com/security/advisories/VMSA-2017-0014.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/100277"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.vmware.com/security/advisories/VMSA-2017-0014.html"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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