CVE-2024-43754
📋 TL;DR
Adobe Experience Manager versions 6.5.21 and earlier contain a DOM-based Cross-Site Scripting vulnerability that allows attackers to execute arbitrary JavaScript in victims' browsers when they click malicious links. This affects all users of vulnerable AEM instances who interact with attacker-controlled content. The vulnerability requires user interaction to exploit.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals session cookies, performs actions as authenticated users, redirects to phishing sites, or installs malware via browser exploitation.
Likely Case
Session hijacking, credential theft, or defacement of web pages viewed by targeted users.
If Mitigated
Limited impact due to same-origin policy restrictions and user awareness preventing malicious link clicks.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) but no authentication to AEM.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.22 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb24-69.html
Restart Required: Yes
Instructions:
1. Download AEM 6.5.22 or later from Adobe. 2. Backup current instance. 3. Apply update following Adobe's upgrade documentation. 4. Restart AEM service. 5. Verify successful update.
🔧 Temporary Workarounds
Content Security Policy
allImplement strict CSP headers to restrict script execution sources
Add 'Content-Security-Policy: script-src 'self'' to web server configuration
Input Validation
allSanitize all user inputs and URL parameters before DOM processing
Implement output encoding for all dynamic content in client-side scripts
🧯 If You Can't Patch
- Implement web application firewall with XSS protection rules
- Educate users about phishing risks and suspicious links
🔍 How to Verify
Check if Vulnerable:
Check AEM version via Admin Console or CRX Package ManagerCheck Version:
curl -k https://aem-instance/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify version is 6.5.22 or higher and test XSS payloads no longer execute📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript execution patterns
- Suspicious URL parameters with script tags
Network Indicators:
- Requests with encoded script payloads in query strings
SIEM Query:
web.url:*javascript:* OR web.url:*<script>*