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CVE-2014-2146

Estado: ModificadaMedia (6.5)—

La funcionalidad Zone-Based Firewall (ZBFW) en Cisco IOS, posiblemente 15.4 y versiones anteriores e IOS XE, posiblemente 3.13 y versiones anteriores, no maneja adecuadamente la zona de comprobación de las sesiones existentes, lo que permite a atacantes remotos eludir las restricciones de acceso a los recursos intencionadas a través de tráfico suplantado que coincide con una de estas sesiones, vulnerabilidad también conocida como Bug IDs CSCun94946 y CSCun96847.

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 (2)

Cisco — IOSCisco — IOS XE

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2014-2146",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "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": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-09-22T17:59:00.133",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/93126",
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/viewAlert.x?alertId=39129",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/93126",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://tools.cisco.com/security/center/viewAlert.x?alertId=39129",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these sessions, aka Bug IDs CSCun94946 and CSCun96847."
    },
    {
      "lang": "es",
      "value": "La funcionalidad Zone-Based Firewall (ZBFW) en Cisco IOS, posiblemente 15.4 y versiones anteriores e IOS XE, posiblemente 3.13 y versiones anteriores, no maneja adecuadamente la zona de comprobación de las sesiones existentes, lo que permite a atacantes remotos eludir las restricciones de acceso a los recursos intencionadas a través de tráfico suplantado que coincide con una de estas sesiones, vulnerabilidad también conocida como Bug IDs CSCun94946 y CSCun96847."
    }
  ],
  "lastModified": "2026-06-17T00:06:08.387",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4970DCB2-3E76-491E-94B0-727E64945D12",
              "versionEndIncluding": "15.4\\(1\\)t1"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "587D3D93-1222-4E04-91C4-E1E03AEFD7D2",
              "versionEndIncluding": "15.4\\(3\\)s"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}