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cve[email protected]CVE-2024-38518
HistoryJun 28, 2024 - 9:15 p.m.

CVE-2024-38518

2024-06-2821:15:03
CWE-284
web.nvd.nist.gov
13
bigbluebutton
virtual classroom
api
vulnerability
patched
additional parameters
moderator role

4.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

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

4.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

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.

Affected configurations

Vulners
Node
bigbluebuttonbigbluebuttonRange<2.6.18
OR
bigbluebuttonbigbluebuttonRange2.7.02.7.8
OR
bigbluebuttonbigbluebuttonRange2.8.03.0.0-alpha.7

CNA Affected

[
  {
    "vendor": "bigbluebutton",
    "product": "bigbluebutton",
    "versions": [
      {
        "version": "< 2.6.18",
        "status": "affected"
      },
      {
        "version": ">= 2.7.0, < 2.7.8",
        "status": "affected"
      },
      {
        "version": ">= 2.8.0, < 3.0.0-alpha.7",
        "status": "affected"
      }
    ]
  }
]

4.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

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

4.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

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