{
  "id": "CVE-2021-21539",
  "sourceIdentifier": "security_alert@emc.com",
  "published": "2021-04-30T21:15:08.707",
  "lastModified": "2021-05-10T18:09:51.187",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface."
    },
    {
      "lang": "es",
      "value": "Dell EMC iDRAC9 versiones anteriores a 4.40.00.00, contiene una vulnerabilidad de condici\u00f3n de carrera Time-of-check Time-of-use (TOCTOU). Un atacante autenticado remoto podr\u00eda explotar potencialmente esta vulnerabilidad para alcanzar privilegios elevados cuando un usuario con privilegios m\u00e1s elevados accede simult\u00e1neamente a iDRAC a trav\u00e9s de la interfaz web."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9
      },
      {
        "source": "security_alert@emc.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 4.7
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:H/Au:S/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "HIGH",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "4.40.00.00",
              "matchCriteriaId": "5E9ED974-1468-4B8B-B82E-5E0340C2601B"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.dell.com/support/kbdoc/000185293",
      "source": "security_alert@emc.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}