CVE-2024-36225
📋 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 scripts. 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, perform actions as authenticated users, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers steal session cookies or user credentials, perform unauthorized actions within the application, or deface public-facing content.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, limiting impact to minor UI issues at most.
🎯 Exploit Status
Exploitation requires access to vulnerable form fields, which typically requires some level of user interaction or permissions.
🛠️ 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 to complete the installation.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement strict input validation and output encoding for all form fields to prevent XSS payloads from being stored and executed.
Content Security Policy (CSP)
allImplement a strict Content Security Policy to restrict script execution sources and prevent inline script execution.
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in form submissions
- Disable or restrict access to vulnerable form fields and components
🔍 How to Verify
Check if Vulnerable:
Check your Adobe Experience Manager version via the AEM welcome screen or by examining the CRX package manager version information.Check Version:
Check AEM welcome page or use CRX Package Manager to view installed packages and versions.Verify Fix Applied:
After patching, verify the version shows 6.5.21 or later and test previously vulnerable form fields with XSS payloads to confirm they are now properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions containing script tags or JavaScript code
- Multiple failed attempts to submit malicious payloads to form fields
Network Indicators:
- HTTP requests containing suspicious script payloads in form parameters
- Unexpected JavaScript execution in user browsers
SIEM Query:
source="aem_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")