FKIE_CVE-2020-20287

Vulnerability from fkie_nvd - Published: 2021-02-01 18:15 - Updated: 2024-11-21 05:11
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.
References
cve@mitre.orghttp://www.yccms.net/Broken Link, URL Repurposed
cve@mitre.orghttps://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.yccms.net/Broken Link, URL Repurposed
af854a3a-2127-422b-91ae-364da2661108https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/Exploit, Third Party Advisory
Impacted products
Vendor Product Version
yccms yccms 3.3
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:yccms:yccms:3.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "6C12D4B7-49EC-46E1-BE82-1CF727FA230E",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function\u0027s improper judgment of the request parameters, triggers remote code execution."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de carga de archivos sin restricciones en el proyecto yccms versi\u00f3n 3.3.\u0026#xa0;El juicio inapropiado de la funci\u00f3n xhUp de los par\u00e1metros de petici\u00f3n desencadena una ejecuci\u00f3n de c\u00f3digo remota"
    }
  ],
  "id": "CVE-2020-20287",
  "lastModified": "2024-11-21T05:11:59.870",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-02-01T18:15:12.857",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link",
        "URL Repurposed"
      ],
      "url": "http://www.yccms.net/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "URL Repurposed"
      ],
      "url": "http://www.yccms.net/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.