{
  "id": "CVE-2020-25820",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-10-21T13:15:12.960",
  "lastModified": "2024-11-21T05:18:50.273",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field."
    },
    {
      "lang": "es",
      "value": "BigBlueButton versiones anteriores a 2.2.7, permite a usuarios autenticados remoto leer archivos locales y llevar a cabo ataques SSRF por medio de un documento Office cargado que tiene una URL dise\u00f1ada en un campo xlink ODF"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "baseScore": 4.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.2.27",
              "matchCriteriaId": "C3387D13-B022-40CE-8B0F-74CFD8DAD88E"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html",
      "source": "cve@mitre.org",
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    {
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      "source": "cve@mitre.org",
      "tags": [
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    },
    {
      "url": "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27",
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html",
      "source": "cve@mitre.org",
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    },
    {
      "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2020-005",
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    },
    {
      "url": "http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html",
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      "url": "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27",
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
    {
      "url": "https://www.redteam-pentesting.de/advisories/rt-sa-2020-005",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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}