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CVE-2019-12170

Estado: ModificadaAlta (8.8)—💥 PoC

ATutor through 2.2.4 is vulnerable to arbitrary file uploads via the mods/_core/backups/upload.php (aka backup) component. This may result in remote command execution. An attacker can use the instructor account to fully compromise the system using a crafted backup ZIP archive. This will allow for PHP files to be written to the web root, and for code to execute on the remote 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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Atutor — Atutor

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-12170",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/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": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-17T22:29:00.453",
  "references": [
    {
      "url": "http://incidentsecurity.com/atutor-2-2-4-backup-remote-command-execution/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "URL Repurposed"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/153869/ATutor-2.2.4-Backup-Remote-Command-Execution.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/fuzzlove/ATutor-Instructor-Backup-Arbitrary-File",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://incidentsecurity.com/atutor-2-2-4-backup-remote-command-execution/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "URL Repurposed"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://packetstormsecurity.com/files/153869/ATutor-2.2.4-Backup-Remote-Command-Execution.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/fuzzlove/ATutor-Instructor-Backup-Arbitrary-File",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ATutor through 2.2.4 is vulnerable to arbitrary file uploads via the mods/_core/backups/upload.php (aka backup) component. This may result in remote command execution. An attacker can use the instructor account to fully compromise the system using a crafted backup ZIP archive. This will allow for PHP files to be written to the web root, and for code to execute on the remote server."
    },
    {
      "lang": "es",
      "value": "ATutor hasta 2.2.4 es vulnerable a cargas de archivos arbitrarios a través del componente mods / _core / backups / upload.php (también conocido como backup). Esto puede resultar en la ejecución remota de comandos. Un atacante puede usar la cuenta del instructor para comprometer completamente el sistema utilizando un archivo ZIP de copia de seguridad diseñado. Esto permitirá que los archivos PHP se escriban en la raíz web y que el código se ejecute en el servidor remoto."
    }
  ],
  "lastModified": "2026-06-17T02:14:11.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:atutor:atutor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7DAE444F-3475-41BE-AB95-1EDBA4B9604F",
              "versionEndIncluding": "2.2.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}