Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-4143— Cross-site Scripting (XSS) - Generic in bigbluebutton/bigbluebutton

Quick assessment

Affected
bigbluebutton bigbluebutton/bigbluebutton
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BigBlueButton是BigBlueButton（Bigbluebutton）社区的一套开源的Web会议系统。 bigbluebutton 存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。

AI Predicted 6.1 Difficulty: Easy EPSS 0.89% · P58

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-4143

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cross-site Scripting (XSS) - Generic in bigbluebutton/bigbluebutton
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site Scripting (XSS) - Generic in GitHub repository bigbluebutton/bigbluebutton prior to 2.4.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
BigBlueButton 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BigBlueButton是BigBlueButton（Bigbluebutton）社区的一套开源的Web会议系统。 bigbluebutton 存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
bigbluebutton bigbluebutton/bigbluebutton unspecified ~ 2.4.0 -

II. Public POCs for CVE-2021-4143

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-4143

请登录查看更多情报信息。

Patches & Fixes for CVE-2021-4143 (1)

Vendor Advisories for CVE-2021-4143 (1)

IV. Related Vulnerabilities

Same vendor: bigbluebutton
Same weakness: CWE-79

V. Comments for CVE-2021-4143

No comments yet

Leave a comment