BigBlueButton up to 2.6.10/2.7.0-beta.2 Guest Lobby cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in BigBlueButton up to 2.6.10/2.7.0-beta.2. Affected is an unknown function of the component Guest Lobby. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2023-43797. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in BigBlueButton up to 2.6.10/2.7.0-beta.2. It has been rated as problematic. Affected by this issue is an unknown function of the component Guest Lobby. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.

The weakness was shared 10/31/2023 as GHSA-v6wg-q866-h73x. The advisory is available at github.com. This vulnerability is handled as CVE-2023-43797 since 09/22/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 2.6.11 or 2.7.0-beta.3 eliminates this vulnerability. Applying the patch 304bc851a00558f99a908880f4ac44234a074c9d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 6.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BigBlueButton 2.6.11/2.7.0-beta.3
Patch: 304bc851a00558f99a908880f4ac44234a074c9d

Timelineinfo

09/22/2023 🔍
10/31/2023 +39 days 🔍
10/31/2023 +0 days 🔍
11/24/2023 +24 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-v6wg-q866-h73x
Status: Confirmed

CVE: CVE-2023-43797 (🔍)
GCVE (CVE): GCVE-0-2023-43797
GCVE (VulDB): GCVE-100-244034

Entryinfo

Created: 10/31/2023 07:57
Updated: 11/24/2023 11:54
Changes: 10/31/2023 07:57 (53), 11/24/2023 11:54 (11)
Complete: 🔍
Cache ID: 216::103

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