« Volver al listado

CVE-2017-4920

Estado: ModificadaMedia (5.9)—

La implementación 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 podría explotar este problema, resultando en el envío continuo de LSA entre dos routers, lo que acabaría por provocar un bucle o la pérdida de la conectividad.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Vmware — Nsx-v Edge

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2017-4920",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security@vmware.com",
      "affectedData": [
        {
          "vendor": "VMware",
          "product": "NSX-V Edge",
          "versions": [
            {
              "status": "affected",
              "version": "6.2.x prior to 6.2.8"
            },
            {
              "status": "affected",
              "version": "6.3.x prior to 6.3.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-12-05T21:29:00.293",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/100277",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@vmware.com"
    },
    {
      "url": "https://www.vmware.com/security/advisories/VMSA-2017-0014.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@vmware.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/100277",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.vmware.com/security/advisories/VMSA-2017-0014.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "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 implementación 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 podría explotar este problema, resultando en el envío continuo de LSA entre dos routers, lo que acabaría por provocar un bucle o la pérdida de la conectividad."
    }
  ],
  "lastModified": "2026-06-17T01:19:33.987",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vmware:nsx-v_edge:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "925CD5F5-66D2-4F56-A165-191F04FF7430",
              "versionEndExcluding": "6.2.8",
              "versionStartIncluding": "6.2.0"
            },
            {
              "criteria": "cpe:2.3:a:vmware:nsx-v_edge:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "203CDE09-854A-49B3-B38B-29D1AB6F4A32",
              "versionEndExcluding": "6.3.3",
              "versionStartIncluding": "6.3.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@vmware.com"
}