{
  "id": "CVE-2023-42804",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-10-30T19:15:08.037",
  "lastModified": "2024-11-21T08:23:11.483",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds."
    },
    {
      "lang": "es",
      "value": "BigBlueButton es un aula virtual de c\u00f3digo abierto. BigBlueButton anterior a la versi\u00f3n 2.6.0-beta.1 tiene una vulnerabilidad de path traversal que permite a un atacante con una ruta de carpeta de inicio v\u00e1lida atravesar y leer otros archivos sin autenticaci\u00f3n, asumiendo que los archivos tienen ciertas extensiones (txt, swf, svg, png). En la versi\u00f3n 2.6.0-beta.1, se agreg\u00f3 validaci\u00f3n de entrada en los par\u00e1metros que se pasan y se eliminan los caracteres peligrosos. No se conocen workarounds."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4
      },
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2.5.18",
              "matchCriteriaId": "5F3F6566-B94F-4CBC-B1BA-DACA51865D76"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.0:alpha1:*:*:*:*:*:*",
              "matchCriteriaId": "83C1F894-31BC-4C2D-AD62-837D990257CF"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.0:alpha2:*:*:*:*:*:*",
              "matchCriteriaId": "84EE596E-A3F6-4B29-B51D-CAE19A74D5E3"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.0:alpha3:*:*:*:*:*:*",
              "matchCriteriaId": "A8DD6CB9-0B7E-4C4E-BDC6-D8FD1B85882D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.6.0:alpha4:*:*:*:*:*:*",
              "matchCriteriaId": "1BA4033B-60B8-4674-98CA-F5794B905362"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/bigbluebutton/bigbluebutton/pull/15960",
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3qjg-229m-vq84",
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/bigbluebutton/bigbluebutton/pull/15960",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3qjg-229m-vq84",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}