CVE-2024-36182
📋 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 the 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 credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers steal user session cookies or credentials, perform actions on behalf of authenticated users, or deploy phishing attacks.
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 user interaction or permissions.
🛠️ 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 official distribution channels. 2. Follow Adobe's upgrade documentation for your deployment type (AEM as a Cloud Service, AEM on-premise, or AMS). 3. Apply the update to all affected instances. 4. Restart the AEM service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize user input in form fields
Implement custom servlet filters or use AEM's built-in XSS protection APIs
Content Security Policy
allDeploy strict Content Security Policy headers to limit script execution
Add 'Content-Security-Policy' header with script-src directives
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Disable or restrict access to vulnerable form fields and components
🔍 How to Verify
Check if Vulnerable:
Check AEM version via OSGi console or AEM welcome page, verify if version is 6.5.20 or earlierCheck Version:
curl -s http://localhost:4502/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Confirm AEM version is 6.5.21 or later, test form fields with XSS payloads to ensure they're properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints with script tags
- Error logs showing XSS filter violations
- Requests containing common XSS payload patterns
Network Indicators:
- HTTP requests with script tags in form parameters
- Unusual outbound connections from AEM instances
SIEM Query:
source="aem-access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")