{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1C8DB5B6-2A9F-44EA-B3DC-CDE840C14540",
              "versionEndIncluding": "2014.07",
              "versionStartIncluding": "2013.07",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:denx:u-boot:2013.07:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "6C787638-BDD7-485A-B024-803B9651D54A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:denx:u-boot:2013.07:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "CD7B4F31-7C15-4EF6-9E09-923C0A396415",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:denx:u-boot:2013.07:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "B6179563-B4D6-4521-B7D3-89A2A8EC48A7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:denx:u-boot:2014.07:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "9356F059-9AE8-4A34-9B94-7690E068F212",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:denx:u-boot:2014.07:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "D588DDD7-46D5-4BFF-9732-DEE4DEDC4D39",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot\u0027s verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad explotable en la protecci\u00f3n verificada de arranque de Das U-Boot, desde la versi\u00f3n 2013.07-rc1 hasta la 2014.07-rc2. Las versiones afectadas carecen de una aplicaci\u00f3n adecuada de las firmas FIT, lo que permite que un atacante omita el arranque verificado de U-Boot y ejecute un kernel sin firmar, embebido en un formato de imagen heredado. Para desencadenar esta vulnerabilidad, un atacante local necesita ser capaz de proporcionar la imagen de arranque."
    }
  ],
  "id": "CVE-2018-3968",
  "lastModified": "2024-11-21T04:06:24.257",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 6.0,
        "source": "talos-cna@cisco.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-03-21T17:29:00.493",
  "references": [
    {
      "source": "talos-cna@cisco.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633"
    }
  ],
  "sourceIdentifier": "talos-cna@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}