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CVE-2020-8103

Estado: ModificadaAlta (7.1)—

A vulnerability in the improper handling of symbolic links in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects Bitdefender Antivirus Free versions prior to 1.0.17.178.

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 (1)

Bitdefender — Antivirus 2020

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-8103",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve-requests@bitdefender.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "PHYSICAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 0.5
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve-requests@bitdefender.com",
      "affectedData": [
        {
          "vendor": "Bitdefender",
          "product": "Bitdefender Antivirus Free",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.0.17.178",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-05T17:15:11.517",
  "references": [
    {
      "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-bitdefender-antivirus-free-va-8604/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve-requests@bitdefender.com"
    },
    {
      "url": "https://www.bitdefender.com/support/security-advisories/link-resolution-privilege-escalation-vulnerability-bitdefender-antivirus-free-va-8604/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-requests@bitdefender.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the improper handling of symbolic links in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects Bitdefender Antivirus Free versions prior to 1.0.17.178."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el manejo inapropiado de enlaces simbólicos en Bitdefender Antivirus Free, puede permitir a un usuario no privilegiado sustituir un archivo en cuarentena y restaurarlo en una ubicación privilegiada. Este problema afecta a Bitdefender Antivirus Free versiones anteriores a 1.0.17.178"
    }
  ],
  "lastModified": "2026-06-17T03:25:52.180",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bitdefender:antivirus_2020:*:*:*:*:free:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "01205F6F-F16C-4E3D-A6BF-E378C4BCD35A",
              "versionEndExcluding": "1.0.17.178"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve-requests@bitdefender.com"
}