{
  "id": "CVE-2021-36766",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-07-30T14:15:18.283",
  "lastModified": "2024-11-21T06:14:03.067",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Concrete5 through 8.5.5 deserializes Untrusted Data. The vulnerable code is located within the controllers/single_page/dashboard/system/environment/logging.php Logging::update_logging() method. User input passed through the logFile request parameter is not properly sanitized before being used in a call to the file_exists() PHP function. This can be exploited by malicious users to inject arbitrary PHP objects into the application scope (PHP Object Injection via phar:// stream wrapper), allowing them to carry out a variety of attacks, such as executing arbitrary PHP code."
    },
    {
      "lang": "es",
      "value": "Concrete5 versiones hasta 8.5.5, deserializa Datos no Confiables. El c\u00f3digo vulnerable se encuentra dentro del m\u00e9todo controllers/single_page/dashboard/system/environment/logging.php en la funci\u00f3n Logging::update_logging(). Una entrada del usuario que se pasa mediante el par\u00e1metro logFile request no es saneado apropiadamente antes de ser usada en una llamada a la funci\u00f3n PHP file_exists(). Esto puede ser explotado por usuarios maliciosos para inyectar objetos PHP arbitrarios en el \u00e1mbito de la aplicaci\u00f3n (PHP Object Injection por medio de phar:// stream wrapper), permiti\u00e9ndoles llevar a cabo una variedad de ataques, como una ejecuci\u00f3n de c\u00f3digo PHP arbitrario"
    }
  ],
  "metrics": {
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        "type": "Primary",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.2,
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    ],
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          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.0,
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
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          "value": "CWE-502"
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          "operator": "OR",
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          "cpeMatch": [
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  "references": [
    {
      "url": "http://packetstormsecurity.com/files/163564/Concrete5-8.5.5-Phar-Deserialization.html",
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