CVE-2024-36146
📋 TL;DR
This stored Cross-Site Scripting (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 all Adobe Experience Manager versions 6.5.20 and earlier.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites.
Likely Case
Attackers with access to vulnerable forms could inject scripts that steal user session data or perform limited malicious actions within the application context.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, though the underlying code flaw remains.
🎯 Exploit Status
Exploitation requires access to vulnerable form fields, which typically requires some level of application 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 Adobe Experience Manager 6.5.21 or later from Adobe's distribution portal. 2. Follow Adobe's upgrade documentation for your deployment type (on-premise or cloud). 3. Restart all AEM instances after applying the update.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize form field inputs before processing.
Implement custom servlet filter or use AEM's built-in XSS protection features
Content Security Policy
allDeploy Content Security Policy headers to restrict script execution sources.
Add 'Content-Security-Policy' header to web server configuration
🧯 If You Can't Patch
- Restrict access to vulnerable form fields using AEM permissions
- Implement web application firewall rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check AEM version via OSGi console or CRXDE. If version is 6.5.20 or earlier, system is vulnerable.Check Version:
curl -u admin:admin http://localhost:4502/system/console/status-productinfo.json | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify AEM version is 6.5.21 or later and test form fields with XSS payloads to ensure they're properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions with script tags
- Requests containing common XSS payload patterns
Network Indicators:
- HTTP requests with script payloads in form parameters
SIEM Query:
source="aem-access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")