CVE-2024-52850
📋 TL;DR
Adobe Experience Manager versions 6.5.21 and earlier contain a stored cross-site scripting vulnerability that allows attackers to inject malicious JavaScript into form fields. When users visit pages containing the compromised fields, their browsers execute the attacker's code, potentially leading to session hijacking or data theft. This affects all organizations running vulnerable AEM instances.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain administrative access to AEM, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers with access to vulnerable forms could inject scripts that steal user session cookies or credentials, enabling account takeover and unauthorized access to sensitive content.
If Mitigated
With proper input validation and output encoding, the risk is significantly reduced, though the underlying vulnerability remains until patched.
🎯 Exploit Status
Exploitation requires access to vulnerable form fields; typically requires authenticated access to authoring interfaces
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.22 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb24-69.html
Restart Required: Yes
Instructions:
1. Download AEM 6.5.22 or later from Adobe distribution. 2. Follow Adobe's upgrade documentation for your deployment type (on-premise or cloud). 3. Apply the update to all affected instances. 4. Restart AEM services. 5. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom servlet filters to sanitize user input in vulnerable form fields
Implement Java servlet filter with input validation logic for form parameters
Content Security Policy
allImplement strict CSP headers to mitigate XSS impact
Add 'Content-Security-Policy' header with script-src directives
🧯 If You Can't Patch
- Restrict access to 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 6.5.21 or earlier are vulnerableCheck Version:
curl -u admin:password http://localhost:4502/system/console/status-productinfoVerify Fix Applied:
Verify AEM version is 6.5.22 or later and test form fields for XSS payload acceptance📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints with script tags
- Multiple failed XSS attempts in request logs
Network Indicators:
- HTTP requests containing script injection patterns to AEM endpoints
SIEM Query:
source="aem_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")