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CVE-2017-3824

Estado: ModificadaMedia (6.8)—

Una vulnerabilidad en el manejo de los encabezados de lista en Cisco cBR Series Converged Broadband Routers podría permitir que un atacante remoto no autenticado provoque el reinicio del dispositivo, resultando en una condición de denegación de servicio (DoS).Los Cisco cBR-8 Converged Broadband Routers que ejecutan versiones vulnerables de Cisco IOS XE están afectados. Más información: CSCux40637. Lanzamientos Afectados Conocidos: 15.5 (3) S 15.6 (1) S. Lanzamientos Reparados Conocidos: 15.5 (3) S2 15.6 (1) S1 15.6 (2) S 15.6 (2) SP 16.4 (1).

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)

Cisco — IOS XE

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-3824",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 6.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Cisco IOS XE 15.x",
          "versions": [
            {
              "status": "affected",
              "version": "Cisco IOS XE 15.x"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-02-03T07:59:00.920",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/95937",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1037774",
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170201-cbr",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/95937",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1037774",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170201-cbr",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the handling of list headers in Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Cisco cBR-8 Converged Broadband Routers running vulnerable versions of Cisco IOS XE are affected. More Information: CSCux40637. Known Affected Releases: 15.5(3)S 15.6(1)S. Known Fixed Releases: 15.5(3)S2 15.6(1)S1 15.6(2)S 15.6(2)SP 16.4(1)."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el manejo de los encabezados de lista en Cisco cBR Series Converged Broadband Routers podría permitir que un atacante remoto no autenticado provoque el reinicio del dispositivo, resultando en una condición de denegación de servicio (DoS).Los Cisco cBR-8 Converged Broadband Routers que ejecutan versiones vulnerables de Cisco IOS XE están afectados. Más información: CSCux40637. Lanzamientos Afectados Conocidos: 15.5 (3) S 15.6 (1) S. Lanzamientos Reparados Conocidos: 15.5 (3) S2 15.6 (1) S1 15.6 (2) S 15.6 (2) SP 16.4 (1)."
    }
  ],
  "lastModified": "2026-06-17T01:18:59.633",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:cisco:ios_xe:3.16.0:*:*:*:*:*:*:*",
              "vulnerable": true,
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            },
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              "criteria": "cpe:2.3:o:cisco:ios_xe:3.16.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8FDFDEB8-D012-4162-A3C6-7D8F1CA3D618"
            },
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              "matchCriteriaId": "A2FABA72-1FB0-40D5-BF79-CF68E66A6A0C"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
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              "matchCriteriaId": "D6CCBE67-E509-43EC-9AFB-8A9B6A115126"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}