{
  "id": "CVE-2015-4199",
  "sourceIdentifier": "ykramarz@cisco.com",
  "published": "2015-06-27T10:59:00.143",
  "lastModified": "2016-12-28T18:02:19.953",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Race condition in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (NULL pointer free and module crash) by triggering intermittent connectivity with many IPv6 CPE devices, aka Bug ID CSCug47366."
    },
    {
      "lang": "es",
      "value": "Condici\u00f3n de carrera en la funcionalidad IPv6-to-IPv4 en Cisco IOS 15.3S en el m\u00f3dulo Performance Routing Engine (PRE) en los dispositivos UBR permite a atacantes remotos causar una denegaci\u00f3n de servicio (liberaci\u00f3n de puntero nulo y ca\u00edda de m\u00f3dulo) mediante la provocaci\u00f3n de la conectividad intermitente con muchos dispositivos IPv6 CPE, tambi\u00e9n conocida como Bug ID CSCug47366."
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.1
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 8.6,
        "impactScore": 6.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:*",
              "matchCriteriaId": "2D105A75-3C37-4B44-8248-6037C98F2F93"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=39423",
      "source": "ykramarz@cisco.com",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/75335",
      "source": "ykramarz@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.securitytracker.com/id/1032692",
      "source": "ykramarz@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    }
  ]
}