CVE-2024-43714
📋 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. Attackers could steal session cookies, redirect users, or perform actions on their behalf. Organizations running Adobe Experience Manager versions 6.5.21 or earlier are affected.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, data theft, or malicious actions performed as the authenticated user
Likely Case
Session cookie theft leading to unauthorized access, defacement of web pages, or credential harvesting
If Mitigated
Limited impact due to input validation, output encoding, and Content Security Policy preventing script execution
🎯 Exploit Status
Requires user interaction (clicking malicious link or submitting crafted input)
🛠️ 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 distribution portal. 2. Follow Adobe's upgrade documentation for your deployment type (AEM as a Cloud Service, AMS, or on-premise). 3. Apply the update to all affected instances. 4. Restart the AEM service.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd strict CSP headers to prevent inline script execution and restrict script sources
Add 'Content-Security-Policy: script-src 'self';' to web server configuration
Input Validation Filter
allImplement server-side input validation to sanitize user inputs before processing
Configure AEM's XSS API filters or implement custom servlet filters
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads in URLs and parameters
- Disable or restrict user input fields that could be vulnerable, and implement strict output encoding
🔍 How to Verify
Check if Vulnerable:
Check AEM version via OSGi console (http://[host]:[port]/system/console/bundles) or CRXDE LiteCheck Version:
curl -s http://localhost:4502/system/console/bundles | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify version is 6.5.22 or later and test vulnerable endpoints with XSS payloads📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters with script tags or JavaScript code
- Requests containing <script>, javascript:, or eval() patterns
Network Indicators:
- HTTP requests with suspicious parameters containing script payloads
SIEM Query:
source="aem_access.log" AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")