VDB-200948 · CVE-2022-29169 · GHSA-rwrv-p665-4vwp

BigBlueButton up to 2.3.18/2.4.6/2.5.0-beta.1 bbb-html5 Service lookupUserAgent User-Agent denial of service

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in BigBlueButton up to 2.3.18/2.4.6/2.5.0-beta.1. It has been declared as problematic. Affected by this vulnerability is the function lookupUserAgent of the component bbb-html5 Service. Such manipulation of the argument User-Agent leads to denial of service. This vulnerability is listed as CVE-2022-29169. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in BigBlueButton up to 2.3.18/2.4.6/2.5.0-beta.1 and classified as problematic. Affected by this issue is the function lookupUserAgent of the component bbb-html5 Service. The manipulation of the argument User-Agent with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was presented 06/02/2022 as GHSA-rwrv-p665-4vwp. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-29169 since 04/13/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2.3.19, 2.4.7 or 2.5.0-beta.2 eliminates this vulnerability. Applying a patch 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.

Once again VulDB remains the best source for 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: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
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: Denial of service
CWE: CWE-404
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 2.3.19/2.4.7/2.5.0-beta.2
Patch: github.com

Timelineinfo

04/13/2022 🔍
06/02/2022 +50 days 🔍
06/02/2022 +0 days 🔍
06/04/2022 +2 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-rwrv-p665-4vwp
Status: Confirmed

CVE: CVE-2022-29169 (🔍)
GCVE (CVE): GCVE-0-2022-29169
GCVE (VulDB): GCVE-100-200948

Entryinfo

Created: 06/02/2022 09:34
Updated: 06/04/2022 13:34
Changes: 06/02/2022 09:34 (52), 06/04/2022 13:34 (1)
Complete: 🔍
Cache ID: 216::103