CVE-2024-36186
📋 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 typically use this to steal session cookies, perform actions on behalf of authenticated users, or deliver malware through the compromised application.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, though the underlying code flaw remains until patched.
🎯 Exploit Status
Stored XSS typically requires some level of access to input fields; exploitation is straightforward once access is obtained
🛠️ 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. Apply the service pack following Adobe's upgrade documentation. 3. Restart the AEM instance. 4. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation and output encoding for all user-controllable form fields
Configure AEM's XSS protection filters via /system/console/configMgr
Content Security Policy
allImplement Content Security Policy headers to restrict script execution
Add CSP headers via Apache/Dispatcher configuration or AEM filters
🧯 If You Can't Patch
- Restrict access to content authoring interfaces to trusted users only
- Implement web application firewall 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:password http://localhost:4502/system/console/status-productinfoVerify Fix Applied:
Verify AEM version is 6.5.21 or later and test form fields for XSS using safe payloads📡 Detection & Monitoring
Log Indicators:
- Unusual content submissions containing script tags
- Multiple failed XSS attempts in request logs
- Suspicious user agent strings in access logs
Network Indicators:
- HTTP requests containing script injection patterns
- Unusual outbound connections from AEM server
SIEM Query:
source="aem-access.log" AND ("<script" OR "javascript:" OR "onload=" OR "onerror=")