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CVE-2024-9981

Estado: AnalizadaAlta (8.8)—

The ee-class from FormosaSoft does not properly validate a specific page parameter, allowing remote attackers with regular privileges to upload a malicious PHP file first and then exploit this vulnerability to include the file, resulting in arbitrary code execution on the server.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso de red con privilegios (PR:L) en servicio remoto (formulosa ee-class); LFI/RFI permite incluir PHP malicioso previamente subido, resultando en web shell y ejecución de código.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Disable or Remove Feature or ProgramPrivileged Account ManagementVulnerability ScanningUser Account ManagementThreat Intelligence ProgramRestrict Web-Based Content

Tecnologías afectadas (1)

Formosasoft — Ee-class

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-9981",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-9981",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-15T13:51:37.755419Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "twcert@cert.org.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "twcert@cert.org.tw",
      "affectedData": [
        {
          "vendor": "FormosaSoft",
          "product": "ee-class",
          "versions": [
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              "status": "affected",
              "version": "0",
              "lessThan": "20240326.13r14494",
              "versionType": "custom"
            }
          ],
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        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:formosasoft:ee_class:*:*:*:*:*:*:*:*"
          ],
          "vendor": "formosasoft",
          "product": "ee_class",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "20240326.13r14494",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-10-15T08:15:03.377",
  "references": [
    {
      "url": "https://www.twcert.org.tw/en/cp-139-8145-15bea-2.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "twcert@cert.org.tw"
    },
    {
      "url": "https://www.twcert.org.tw/tw/cp-132-8144-2885b-1.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "twcert@cert.org.tw"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "twcert@cert.org.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-98"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The ee-class from FormosaSoft does not properly validate a specific page parameter, allowing remote attackers with regular privileges to upload a malicious PHP file first and then exploit this vulnerability to include the file, resulting in arbitrary code execution on the server."
    },
    {
      "lang": "es",
      "value": "La clase ee de FormosaSoft no valida correctamente un parámetro de página específico, lo que permite a atacantes remotos con privilegios regulares cargar primero un archivo PHP malicioso y luego explotar esta vulnerabilidad para incluir el archivo, lo que resulta en la ejecución de código arbitrario en el servidor."
    }
  ],
  "lastModified": "2026-06-17T08:25:38.237",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:formosasoft:ee-class:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C1DC1058-E8F4-436D-8F7C-96C6EFE30F77",
              "versionEndExcluding": "2024-03-26"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "twcert@cert.org.tw"
}