BigBlueButton up to 2.3.x cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in BigBlueButton up to 2.3.x. This impacts an unknown function. Performing a manipulation results in cross site scripting. This vulnerability is reported as CVE-2021-4143. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in BigBlueButton up to 2.3.x. This affects some unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity.

The weakness was disclosed 01/20/2022. The advisory is shared at huntr.dev. This vulnerability is uniquely identified as CVE-2021-4143 since 12/20/2021. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 2.4.0 eliminates this vulnerability. Applying the patch 62040bdcb3c2f993ba72ab89f4db2015e18d1706 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: 6.2
VulDB Meta Temp Score: 6.1

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

CNA Base Score: 8.1
CNA Vector (huntr.dev): 🔍

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 2.4.0
Patch: 62040bdcb3c2f993ba72ab89f4db2015e18d1706

Timelineinfo

12/20/2021 🔍
01/20/2022 +31 days 🔍
01/20/2022 +0 days 🔍
01/26/2022 +6 days 🔍

Sourcesinfo

Product: github.com

Advisory: 62040bdcb3c2f993ba72ab89f4db2015e18d1706
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-4143 (🔍)
GCVE (CVE): GCVE-0-2021-4143
GCVE (VulDB): GCVE-100-191277

Entryinfo

Created: 01/20/2022 07:02
Updated: 01/26/2022 09:12
Changes: 01/20/2022 07:02 (49), 01/26/2022 09:12 (3)
Complete: 🔍
Cache ID: 216::103

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