CVE-2024-53969
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager allows attackers to inject malicious scripts that execute in victims' browsers. Attackers can steal session cookies, redirect users, or perform actions on their behalf. Organizations using Adobe Experience Manager versions 6.5.21 and earlier are affected.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, data theft, or malicious actions performed as authenticated users, potentially leading to privilege escalation or lateral movement within the application.
Likely Case
Session hijacking, credential theft, or defacement of user interfaces through script injection in victim browsers.
If Mitigated
Limited impact due to Content Security Policy (CSP) headers, input validation, and user awareness reducing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction and knowledge of vulnerable DOM manipulation points.
🛠️ 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. Follow Adobe's upgrade documentation for your deployment type (AEM as a Cloud Service or on-premise). 3. Apply the update to all affected instances. 4. Restart AEM services. 5. Verify the update was successful.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources and reduce XSS impact.
Add 'Content-Security-Policy' header with appropriate directives to web server configuration
Input Validation Sanitization
allImplement server-side validation and output encoding for all user inputs.
Configure AEM filters and servlets to sanitize inputs before DOM manipulation
🧯 If You Can't Patch
- Implement strict Content Security Policy headers to limit script execution
- Restrict user access to only trusted domains and monitor for suspicious DOM manipulation attempts
🔍 How to Verify
Check if Vulnerable:
Check AEM version via AEM Web Console (/system/console) or by examining the AEM installation directory for version files.Check Version:
curl -k https://<aem-host>:<port>/system/console/status-productinfo 2>/dev/null | grep 'Adobe Experience Manager'Verify Fix Applied:
Confirm AEM version is 6.5.22 or later and test vulnerable endpoints with XSS payloads to ensure they are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual DOM manipulation requests
- Suspicious script tags in request parameters
- Multiple failed XSS attempts
Network Indicators:
- Malicious script payloads in HTTP requests
- Unexpected redirects to external domains
SIEM Query:
source="aem_access.log" AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")