« Volver al listado

CVE-2020-17355

Estado: ModificadaAlta (7.5)—

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (restart of agents) by crafting a malformed DHCP packet which leads to an incorrect route being installed.

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)

Arista — EOS

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-17355",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-21T22:15:11.930",
  "references": [
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/11759-security-advisory-53",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/11759-security-advisory-53",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (restart of agents) by crafting a malformed DHCP packet which leads to an incorrect route being installed."
    },
    {
      "lang": "es",
      "value": "Arista EOS versiones anteriores a 4.21.12M, 4.22.x versiones anteriores a 4.22.7M, 4.23.x versiones anteriores a 4.23.5M y 4.24.x versiones anteriores a 4.24.2F, permite a atacantes remotos causar una denegación de servicio (reinicio de agentes) por medio de la creación de un paquete DHCP malformado que conlleva a la instalación de una ruta inapropiada"
    }
  ],
  "lastModified": "2026-06-17T02:58:47.730",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8FCF6056-72B1-47FE-8D29-CD5F0F9B5436",
              "versionEndExcluding": "4.21.12m",
              "versionStartIncluding": "4.21.0"
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9CA840AC-49E4-491A-872E-1EE60B986131",
              "versionEndExcluding": "4.22.7m",
              "versionStartIncluding": "4.22"
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C349690C-2136-4E50-96E9-432FD27E4995",
              "versionEndExcluding": "4.23.5m",
              "versionStartIncluding": "4.23"
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DD8F353F-4DE3-449B-95F0-1401172A19EC",
              "versionEndExcluding": "4.24.2f",
              "versionStartIncluding": "4.24.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}