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cvelistGitHub_MCVELIST:CVE-2022-29236
HistoryJun 01, 2022 - 11:25 p.m.

CVE-2022-29236 Improper access control for pencil annotations in BigBlueButton

2022-06-0123:25:12
CWE-285
GitHub_M
www.cve.org
cve-2022-29236
access control
pencil annotations
bigbluebutton
web conferencing
version 2.2
version 2.3.18
version 2.4-rc-6

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.8

Confidence

High

EPSS

0.001

Percentile

33.3%

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4-rc-6, an attacker can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant. The problem has been patched in versions 2.3.18 and 2.4-rc-6. There are currently no known workarounds.

CNA Affected

[
  {
    "vendor": "bigbluebutton",
    "product": "bigbluebutton",
    "versions": [
      {
        "version": ">= 2.2, < 2.3.18",
        "status": "affected"
      },
      {
        "version": ">= 2.4-alpha-1, < 2.4-rc-6",
        "status": "affected"
      }
    ]
  }
]

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.8

Confidence

High

EPSS

0.001

Percentile

33.3%

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