LOW CVSS 2.7
Published: 2022-12-16

CVE-2022-41962

bigbluebutton bigbluebutton Security Advisory (CVE-2022-41962)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2022-41962 impacting bigbluebutton bigbluebutton. Evaluated with CVSS Base Score of 2.7 (LOW).

Original NVD Description

Source: NIST NVD
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji status. A user with moderator rights can use the clear status feature to set any emoji status for other users. Moderators should only be able to set none as the status of other users. This issue is patched in 2.4-rc-6 and 2.5-alpha-1There are no workarounds.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
High (PR:H)
Administrative credentials required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product bigbluebutton / bigbluebutton
Affected Versions *
Weakness Enumeration CWE-863

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2022-41962 impacting bigbluebutton bigbluebutton.

⚡ Nuclei Detection Template (YAML) cve-2022-41962.yaml
id: cve-2022-41962

info:
  name: bigbluebutton bigbluebutton - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2022-41962 affecting bigbluebutton bigbluebutton.
    Evaluation: BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6, and 2.5-alpha-1 contain Incorrect Authorization for setting emoji...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2022-41962
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
    cvss-score: 2.7
    cve-id: CVE-2022-41962
    cwe-id: CWE-863
  tags: cve,cve-2022-41962,bigbluebutton,bigbluebutton,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "bigbluebutton"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2022-41962.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2022-41962
# Target: bigbluebutton bigbluebutton | CVSS: 2.7 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2022-41962 (bigbluebutton bigbluebutton)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against bigbluebutton bigbluebutton scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2022-41962.sh
# Recommended Remediation & Patching Commands for CVE-2022-41962
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install bigbluebutton 2>/dev/null || \
sudo dnf upgrade bigbluebutton 2>/dev/null || \
sudo yum update bigbluebutton

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i bigbluebutton 2>/dev/null || rpm -qa | grep -i bigbluebutton

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2022-41962 in bigbluebutton bigbluebutton?

Review vendor-specific security notices and update bigbluebutton bigbluebutton packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2022-41962?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2022-41962?

CVE-2022-41962 is classified with a CVSS 3.1 Base Score of 2.7 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
2.7
LOW SEVERITY
CVE ID CVE-2022-41962
Weakness CWE-863
Vendor bigbluebutton
Product bigbluebutton
Published 2022-12-16
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N