CVE-2024-36164
📋 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 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 client-side malware.
If Mitigated
With proper input validation and output encoding, the impact is limited to minor data exposure or temporary session issues.
🎯 Exploit Status
Exploitation requires attacker to have access to vulnerable form fields; typically requires some level of authenticated 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 official distribution channels. 2. Follow Adobe's upgrade documentation for your specific deployment type (on-premise or cloud). 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
Configure AEM's XSS protection filters in /system/console/configMgr
Content Security Policy
allImplement strict Content Security Policy headers to limit script execution
Add CSP headers via Apache/nginx configuration or AEM dispatcher
🧯 If You Can't Patch
- Restrict access to vulnerable form fields using AEM permissions and access controls
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check AEM version via CRXDE Lite or system console; versions 6.5.20 or earlier are vulnerableCheck Version:
curl -u admin:admin http://localhost:4502/system/console/status-productinfo.json | grep versionVerify Fix Applied:
Verify version is 6.5.21 or later and test form fields with XSS payloads📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints
- Requests containing script tags or JavaScript in form data
Network Indicators:
- HTTP requests with suspicious script payloads in parameters
SIEM Query:
source="aem_access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")