cvelistv5 - cve-2024-38518

CVE-2024-38518 (GCVE-0-2024-38518)

Vulnerability from cvelistv5 – Published: 2024-06-28 20:25 – Updated: 2024-08-02 04:12

Title

bbb-web API additional parameters considered

Summary

BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be "role=moderator", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7.

Severity ?

4.6 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

CWE

CWE-284 - Improper Access Control

Assigner

GitHub_M

References

URL

Tags

	https://github.com/bigbluebutton/bigbluebutton/se…	x_refsource_CONFIRM
	https://github.com/bigbluebutton/bigbluebutton/pu…	x_refsource_MISC
	https://github.com/bigbluebutton/bigbluebutton/co…	x_refsource_MISC
	https://github.com/bigbluebutton/bigbluebutton/co…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	bigbluebutton	bigbluebutton	Affected: < 2.6.18 Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7

Show details on NVD website

JSON

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FKIE_CVE-2024-38518

Vulnerability from fkie_nvd - Published: 2024-06-28 21:15 - Updated: 2024-11-21 09:26

Severity ?

4.6 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1
	security-advisories@github.com	https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72
	security-advisories@github.com	https://github.com/bigbluebutton/bigbluebutton/pull/20279
	security-advisories@github.com	https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/bigbluebutton/bigbluebutton/pull/20279
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-06-28T21:15:03.180",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

WID-SEC-W-2024-1471

Vulnerability from csaf_certbund - Published: 2024-06-27 22:00 - Updated: 2024-06-27 22:00

Summary

BigBlueButton: Mehrere Schwachstellen

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung

BigBlueButton ist ein Open-Source-Web-Konferenzsystem.

Angriff

Ein entfernter Angreifer kann mehrere Schwachstellen in BigBlueButton ausnutzen, um Sicherheitsmaßnahmen zu umgehen oder vertrauliche Informationen offenzulegen.

Betroffene Betriebssysteme

- Linux

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "BigBlueButton ist ein Open-Source-Web-Konferenzsystem.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter Angreifer kann mehrere Schwachstellen in BigBlueButton ausnutzen, um Sicherheitsma\u00dfnahmen zu umgehen oder vertrauliche Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2024-1471 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1471.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1471 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1471"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-4m48-49h7-f3c4 vom 2024-06-27",
        "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-5966-9hw8-q96q vom 2024-06-27",
        "url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-5966-9hw8-q96q"
      }
    ],
    "source_lang": "en-US",
    "title": "BigBlueButton: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2024-06-27T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-15T18:10:39.440+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.5"
        }
      },
      "id": "WID-SEC-W-2024-1471",
      "initial_release_date": "2024-06-27T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-06-27T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c2.7.8",
                "product": {
                  "name": "Open Source BigBlueButton \u003c2.7.8",
                  "product_id": "T035684"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c2.6.18",
                "product": {
                  "name": "Open Source BigBlueButton \u003c2.6.18",
                  "product_id": "T035685"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c3.0.0-alpha.7",
                "product": {
                  "name": "Open Source BigBlueButton \u003c3.0.0-alpha.7",
                  "product_id": "T035686"
                }
              }
            ],
            "category": "product_name",
            "name": "BigBlueButton"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-38518",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle in BigBlueButton. Dieser Fehler besteht im API-Anforderungsvalidierungsprozess, der es erm\u00f6glicht, einen signierten Beitrittslink mit zus\u00e4tzlichen Parametern zu generieren, der zum Beitritt zu einem Meeting als Moderator f\u00fchrt. Ein entfernter authentifizierter Angreifer kann diese Schwachstelle ausnutzen, um Sicherheitsma\u00dfnahmen zu umgehen. Eine erfolgreiche Ausnutzung erfordert eine Benutzerinteraktion."
        }
      ],
      "release_date": "2024-06-27T22:00:00.000+00:00",
      "title": "CVE-2024-38518"
    },
    {
      "cve": "CVE-2024-39302",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle in BigBlueButton. Dieser Fehler besteht aufgrund einer unsachgem\u00e4\u00dfen Rechteverwaltung. Ein entfernter, anonymer Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen."
        }
      ],
      "release_date": "2024-06-27T22:00:00.000+00:00",
      "title": "CVE-2024-39302"
    }
  ]
}

Sightings

Author	Source	Type	Date

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Action not permitted

CVE-2024-38518 (GCVE-0-2024-38518)

FKIE_CVE-2024-38518

WID-SEC-W-2024-1471

Tags

Sightings

Nomenclature