CVE-2024-52827
📋 TL;DR
Adobe Experience Manager versions 6.5.21 and earlier contain a stored cross-site scripting vulnerability in form fields. Attackers can inject malicious JavaScript that executes in victims' browsers when they visit compromised pages. This affects all users of vulnerable AEM instances.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware through drive-by downloads.
Likely Case
Session hijacking, credential theft, or defacement of web pages through injected content.
If Mitigated
Limited impact with proper input validation and output encoding, though some functionality disruption possible.
🎯 Exploit Status
Requires attacker to have ability to submit content to vulnerable form fields. Stored XSS means payload persists until cleaned.
🛠️ 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. 2. Backup current installation. 3. Apply update following Adobe's upgrade procedures. 4. Restart AEM services. 5. Verify successful update.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom servlet filters to sanitize form field inputs
Implement Java servlet filter with OWASP Java Encoder library for input sanitization
Content Security Policy
allImplement strict CSP headers to limit script execution
Add 'Content-Security-Policy: script-src 'self'' to HTTP headers
🧯 If You Can't Patch
- Implement web application firewall with XSS protection rules
- Disable or restrict access to vulnerable form fields through permissions
🔍 How to Verify
Check if Vulnerable:
Check AEM version via /system/console/status-productinfo endpoint or CRX Package ManagerCheck Version:
curl -k https://<aem-host>:<port>/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify version is 6.5.22 or later and test form fields with XSS payloads📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions with script tags
- Requests containing JavaScript payloads in parameters
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests with script tags in POST data
- Unusual content-type submissions to form endpoints
SIEM Query:
source="aem_logs" AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")