{
  "id": "CVE-2017-12331",
  "sourceIdentifier": "ykramarz@cisco.com",
  "published": "2017-11-30T09:29:00.370",
  "lastModified": "2017-12-15T02:29:03.547",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. An authenticated, local attacker could exploit this vulnerability to bypass signature verification and load a crafted, unsigned software patch on a targeted device. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en Cisco NX-OS System Software podr\u00eda permitir a un atacante local autenticado omitir la verificaci\u00f3n de firmas cuando se carga un parche de software. La vulnerabilidad se debe a una verificaci\u00f3n de firmas NX-OS insuficiente para parches de software. Un atacante local autenticado podr\u00eda explotar esta vulnerabilidad para omitir la verificaci\u00f3n de firmas y cargar un parche de software manipulado y sin firma en un dispositivo objetivo. El atacante necesitar\u00eda credenciales de administrador v\u00e1lidas para explotar esta vulnerabilidad. Esta vulnerabilidad afecta a los siguientes productos que ejecutan Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches y Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    },
    {
      "source": "ykramarz@cisco.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:cisco:nx-os:8.1\\(1\\):*:*:*:*:*:*:*",
              "matchCriteriaId": "AB556839-151C-492E-B4C3-C024276D5AB1"
            }
          ]
        }
      ]
    },
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:cisco:unified_computing_system:7.0\\(0\\)hsk\\(0.357\\):*:*:*:*:*:*:*",
              "matchCriteriaId": "F5154CDB-F7D6-44DA-B118-3DF12EFA2067"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/102159",
      "source": "ykramarz@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1039930",
      "source": "ykramarz@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos",
      "source": "ykramarz@cisco.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}