CVE-2024-36194
📋 TL;DR
This stored XSS vulnerability in Adobe Experience Manager allows attackers to inject malicious JavaScript into vulnerable form fields. When users visit pages containing these compromised fields, their browsers execute the attacker's code. This affects AEM versions 6.5.20 and earlier.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on victim systems.
Likely Case
Session hijacking, credential theft, or defacement of web pages through injected content.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires access to vulnerable form fields; typically requires some level of user interaction or content authoring access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.21 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb24-28.html
Restart Required: Yes
Instructions:
1. Download AEM 6.5.21 or later from Adobe distribution. 2. Follow Adobe's upgrade documentation. 3. Apply the update to all affected instances. 4. Restart AEM services.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution from untrusted sources
Add 'Content-Security-Policy' header to web server configuration
Input Validation Filter
allImplement server-side input validation for all form fields
Configure AEM filters to sanitize user input
🧯 If You Can't Patch
- Restrict access to content authoring interfaces to trusted users only
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check AEM version via /system/console/status-productinfo endpoint or AEM welcome pageCheck Version:
curl -k https://<aem-host>:<port>/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify version is 6.5.21 or later and test form fields for XSS payload acceptance📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints
- JavaScript payloads in request parameters
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests containing script tags or JavaScript in form data
- Unusual outbound connections from AEM server
SIEM Query:
source="aem_access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")