VDB-154315 · CVE-2020-12113 · GCVE-0-2020-12113

BigBlueButton up to 2.2.3 React dangerouslySetInnerHTML cross site scripting

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in BigBlueButton up to 2.2.3. It has been rated as problematic. The impacted element is the function dangerouslySetInnerHTML of the component React Handler. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2020-12113. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability classified as problematic was found in BigBlueButton up to 2.2.3. Affected by this vulnerability is the function dangerouslySetInnerHTML of the component React Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

BigBlueButton before 2.2.4 allows XSS via closed captions because dangerouslySetInnerHTML in React is used.

The weakness was published 04/23/2020. This vulnerability is known as CVE-2020-12113 since 04/23/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 2.2.4 eliminates this vulnerability.

Similar entry is available at VDB-154314. 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: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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 2.2.4
Patch: github.com

Timelineinfo

04/23/2020 🔍
04/23/2020 +0 days 🔍
04/24/2020 +1 days 🔍
05/06/2025 +1838 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-12113 (🔍)
GCVE (CVE): GCVE-0-2020-12113
GCVE (VulDB): GCVE-100-154315
See also: 🔍

Entryinfo

Created: 04/24/2020 07:41 AM
Updated: 05/06/2025 01:31 PM
Changes: 04/24/2020 07:41 AM (38), 04/24/2020 07:46 AM (17), 06/02/2024 12:05 PM (20), 05/06/2025 01:31 PM (5)
Complete: 🔍
Cache ID: 244:A96:40