CVE-2024-52844
📋 TL;DR
This DOM-based XSS vulnerability in Adobe Experience Manager allows attackers to execute arbitrary JavaScript in victims' browsers by manipulating DOM elements through crafted URLs or inputs. It affects users of Adobe Experience Manager versions 6.5.21 and earlier who visit malicious links or submit data to compromised forms. The attack requires user interaction but can lead to session hijacking or data theft.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, data exfiltration, or redirection to malicious sites leading to further compromise.
Likely Case
Session hijacking, credential theft, or unauthorized actions performed within the victim's authenticated session.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link or submitting form data). Attack complexity is moderate due to DOM manipulation requirements.
🛠️ 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 Adobe Experience Manager 6.5.22 or later from Adobe's official distribution. 2. Backup current installation and data. 3. Apply the update following Adobe's upgrade documentation. 4. Restart the AEM service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd strict CSP headers to prevent execution of inline scripts and restrict script sources.
Add 'Content-Security-Policy: script-src 'self';' to web server configuration
Input Validation and Output Encoding
allImplement server-side validation and proper output encoding for all user inputs.
Configure AEM's XSS protection filters and implement custom validation where needed
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to detect and block XSS payloads
- Restrict user access to only trusted domains and implement URL validation
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the Welcome screen or system/console/status-productinfo endpoint. If version is 6.5.21 or earlier, system is vulnerable.Check Version:
curl -k https://<aem-host>:<port>/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify AEM version is 6.5.22 or later and test XSS payloads are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in request logs
- Suspicious URL parameters containing script tags or JavaScript functions
Network Indicators:
- Requests with encoded script payloads in URL parameters
- Unusual redirect patterns
SIEM Query:
source="aem-access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")