CVE-2022-29236

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    CVE-2022-29236

    Published: 1 Jun 2022Last Modified: 21 Oct 2026

    Summary: Improper access control for pencil annotations in BigBlueButton

    Details: 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.

    References: https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18, https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29236.json, https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r, https://nvd.nist.gov/vuln/detail/CVE-2022-29236, https://github.com/bigbluebutton/bigbluebutton/pull/13803, https://github.com/bigbluebutton/bigbluebutton/pull/14265

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 68e35c9d722e62892d2e885646a9eab3bf44f77d
    Fixed -0bcb8c2b9e850b99faae7fcfb3d1014e64bff97d

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-29236 | CVE-DB