Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2022-29233

Severity CVSS v4.0:
Pending analysis
Type:
CWE-285 Improper Authorization
Publication date:
02/06/2022
Last modified:
09/06/2022

Description

BigBlueButton is an open source web conferencing system. In BigBlueButton starting with 2.2 but before 2.3.18 and 2.4-rc-1, an attacker can circumvent access controls to gain access to all breakout rooms of the meeting they are in. The permission checks rely on knowledge of internal ids rather than on verification of the role of the user. Versions 2.3.18 and 2.4-rc-1 contain a patch for this issue. There are currently no known workarounds.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x
4.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:* 2.2.0 (including) 2.3.18 (excluding)
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha1:*:*:*:*:*:*
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha2:*:*:*:*:*:*
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta1:*:*:*:*:*:*
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta2:*:*:*:*:*:*
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta3:*:*:*:*:*:*
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta4:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools