MSRC_CVE-2020-27304

Vulnerability from csaf_microsoft - Published: 2021-10-02 00:00 - Updated: 2024-06-30 07:00
Summary
The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows when using the built-in HTTP form-based file upload mechanism via the mg_handle_form_request API. Web applications that use the file upload form handler and use parts of the user-controlled filename in the output path are susceptible to directory traversal

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
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      {
        "category": "self",
        "summary": "CVE-2020-27304 The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows when using the built-in HTTP form-based file upload mechanism via the mg_handle_form_request API. Web applications that use the file upload form handler and use parts of the user-controlled filename in the output path are susceptible to directory traversal - VEX",
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    ],
    "title": "The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows when using the built-in HTTP form-based file upload mechanism via the mg_handle_form_request API. Web applications that use the file upload form handler and use parts of the user-controlled filename in the output path are susceptible to directory traversal",
    "tracking": {
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    {
      "cve": "CVE-2020-27304",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
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      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2020-27304 The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows when using the built-in HTTP form-based file upload mechanism via the mg_handle_form_request API. Web applications that use the file upload form handler and use parts of the user-controlled filename in the output path are susceptible to directory traversal - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2020-27304.json"
        }
      ],
      "remediations": [
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          "category": "vendor_fix",
          "date": "2024-06-30T07:00:00.000Z",
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            "17084-3"
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            "baseScore": 9.8,
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            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
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            "version": "3.1"
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        }
      ],
      "title": "The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows when using the built-in HTTP form-based file upload mechanism via the mg_handle_form_request API. Web applications that use the file upload form handler and use parts of the user-controlled filename in the output path are susceptible to directory traversal"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.