CVE-2024-52829
📋 TL;DR
Adobe Experience Manager versions 6.5.21 and earlier contain a stored Cross-Site Scripting vulnerability where attackers can inject malicious JavaScript into form fields. When users visit pages containing these compromised fields, their browsers execute the attacker's code. 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 credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to full 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 vulnerability is prevented, though the underlying code flaw remains.
🎯 Exploit Status
Exploitation requires access to vulnerable form fields, typically requiring some level of user interaction or authentication.
🛠️ 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'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 and Output Encoding
allImplement strict input validation and proper output encoding for all form fields to prevent XSS payloads from executing.
Content Security Policy
allImplement a strict Content Security Policy header to restrict script execution sources.
🧯 If You Can't Patch
- Implement web application firewall rules to block XSS payload patterns
- Restrict access to vulnerable form fields to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the Welcome screen or OSGi console. If version is 6.5.21 or earlier, the system is vulnerable.Check Version:
curl -s http://localhost:4502/libs/granite/core/content/login.html | grep 'AEM 6.5'Verify Fix Applied:
After patching, verify the version shows 6.5.22 or later and test form fields for XSS payload acceptance.📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions with script tags
- Requests containing JavaScript payloads in parameters
Network Indicators:
- HTTP requests with suspicious script content in POST data
SIEM Query:
source="aem-access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")