VDB-215969 · CVE-2022-41962 · GHSA-88qf-33qm-9mm7

BigBlueButton up to 2.4-rc-5 Emoji Status improper authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in BigBlueButton up to 2.4-rc-5. It has been classified as critical. The affected element is an unknown function of the component Emoji Status Handler. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2022-41962. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in BigBlueButton up to 2.4-rc-5 and classified as critical. This issue affects an unknown code block of the component Emoji Status Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to set none as the status of other users. This issue is patched in 2.4-rc-6 and 2.5-alpha-1There are no workarounds.

The weakness was shared 12/16/2022 as GHSA-88qf-33qm-9mm7. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-41962 since 09/30/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 2.4-rc-6 or 2.5-alpha-1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

BigBlueButton

Version

License

free

Website

Product: https://github.com/bigbluebutton/bigbluebutton/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.7
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BigBlueButton 2.4-rc-6/2.5-alpha-1

Timelineinfo

09/30/2022 🔍
12/16/2022 +77 days 🔍
12/16/2022 +0 days 🔍
01/13/2023 +28 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-88qf-33qm-9mm7
Status: Confirmed

CVE: CVE-2022-41962 (🔍)
GCVE (CVE): GCVE-0-2022-41962
GCVE (VulDB): GCVE-100-215969

Entryinfo

Created: 12/16/2022 17:50
Updated: 01/13/2023 14:10
Changes: 12/16/2022 17:50 (41), 01/13/2023 14:10 (12)
Complete: 🔍
Cache ID: 216::103