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CVE-2024-39943

Estado: ModificadaAlta (8.8)—💥 PoC

rejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if they have Upload permissions). This occurs because a shell is used to execute df (i.e., with execSync instead of spawnSync in child_process in Node.js).

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)

Rejetto — Http File Server

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-39943",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
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            },
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              "automatable": "yes"
            },
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            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-12T03:55:26.030939Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "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",
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    {
      "url": "https://www.rejetto.com/wiki/index.php/HFS:_Working_with_uploads",
      "tags": [
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    {
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      "tags": [
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      ],
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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    {
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "rejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if they have Upload permissions). This occurs because a shell is used to execute df (i.e., with execSync instead of spawnSync in child_process in Node.js)."
    },
    {
      "lang": "es",
      "value": "rejetto HFS (también conocido como servidor de archivos HTTP) 3 anterior a 0.52.10 en Linux, UNIX y macOS permite la ejecución de comandos del sistema operativo por parte de usuarios remotos autenticados (si tienen permisos de carga). Esto ocurre porque se usa un shell para ejecutar df (es decir, con execSync en lugar de spawnSync en child_process en Node.js)."
    }
  ],
  "lastModified": "2026-06-17T07:43:04.153",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:rejetto:http_file_server:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "0.52.10"
            }
          ],
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        }
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  ],
  "sourceIdentifier": "cve@mitre.org"
}