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CVE-2020-36863

Estado: AnalizadaAlta (8.7)—

Nagios XI versions prior to 5.7.2 allow PHP files to be uploaded to the Audio Import directory and executed from that location. The upload handler did not properly restrict file types or enforce storage outside of the webroot, and the web server permitted execution within the upload directory. An authenticated attacker with access to the audio import feature could upload a crafted PHP file and then request it to achieve remote code execution with the privileges of the application service.

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 remoto autenticado (PR:L) a servicio expuesto (AV:N) sin interacción del usuario. Upload de PHP en directorio web ejecutable permite web shell y ejecución de código arbitrario con privilegios del servicio.

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)

Nagios — Nagios XI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2020-36863",
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          "id": "CVE-2020-36863",
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          "options": [
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              "technicalImpact": "total"
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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            "Audio import directory / upload handler (web UI/API)",
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          ],
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    {
      "url": "https://www.vulncheck.com/advisories/nagios-xi-unrestricted-file-upload-via-audio-import-directory",
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          "value": "CWE-434"
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    {
      "lang": "en",
      "value": "Nagios XI versions prior to 5.7.2 allow PHP files to be uploaded to the Audio Import directory and executed from that location. The upload handler did not properly restrict file types or enforce storage outside of the webroot, and the web server permitted execution within the upload directory. An authenticated attacker with access to the audio import feature could upload a crafted PHP file and then request it to achieve remote code execution with the privileges of the application service."
    }
  ],
  "lastModified": "2026-06-17T03:16:21.713",
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}