CVE-2024-54042
📋 TL;DR
This reflected Cross-Site Scripting (XSS) vulnerability in Adobe Connect allows unauthenticated attackers to execute malicious JavaScript in victims' browsers by tricking them into visiting specially crafted URLs. It affects Adobe Connect versions 12.6, 11.4.7 and earlier. The vulnerability enables client-side attacks against users of vulnerable Adobe Connect instances.
💻 Affected Systems
- Adobe Connect
📦 What is this software?
Connect by Adobe
Connect by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware through drive-by downloads.
Likely Case
Session hijacking, credential theft, or defacement of the Adobe Connect interface through injected content.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though user interaction is still required.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly weaponized in phishing campaigns. Exploitation requires user interaction but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Adobe Connect 12.7 and 11.4.8
Vendor Advisory: https://helpx.adobe.com/security/products/connect/apsb24-99.html
Restart Required: Yes
Instructions:
1. Download the latest Adobe Connect version from Adobe's official website. 2. Follow Adobe's upgrade documentation for your deployment type (on-premise or cloud). 3. Apply the update and restart the Adobe Connect service.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block XSS payloads in URL parameters
Input Validation Filtering
allAdd server-side input validation to sanitize URL parameters before processing
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security features like HTTPOnly and Secure flags for cookies
🔍 How to Verify
Check if Vulnerable:
Check Adobe Connect version in administration console or via version file in installation directoryCheck Version:
Check Adobe Connect admin panel or review installation documentation for version locationVerify Fix Applied:
Verify version is 12.7 or higher, or 11.4.8 or higher, and test with XSS payloads📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters containing script tags or JavaScript code
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script> tags or JavaScript functions
SIEM Query:
web.url:*<script* OR web.url:*javascript:* AND destination.app:"Adobe Connect"