CVE-2024-52852
📋 TL;DR
Adobe Experience Manager versions 6.5.21 and earlier contain a stored cross-site scripting vulnerability in form fields. An attacker can inject malicious JavaScript that executes in victims' browsers when they view the compromised page. 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, redirect users to malicious sites, perform actions on behalf of authenticated users, or deploy malware through the victim's browser.
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 stored XSS remains a persistent threat.
🎯 Exploit Status
Exploitation requires ability to submit content to vulnerable form fields, which typically requires some level of access or social engineering.
🛠️ 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 Adobe Experience Manager 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 output encoding for all form fields to prevent XSS payloads from executing.
Content Security Policy
allImplement a strict Content Security Policy to restrict script execution sources.
🧯 If You Can't Patch
- Implement web application firewall rules to block XSS payloads
- Restrict access to vulnerable form fields to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the Welcome screen or system console. Versions 6.5.21 and earlier are vulnerable.Check Version:
Check via AEM Welcome screen or CRXDE Lite at /system/console/status-productinfoVerify Fix Applied:
Verify AEM version is 6.5.22 or later and test form fields for XSS vulnerabilities using security testing tools.📡 Detection & Monitoring
Log Indicators:
- Unusual content submissions to form fields
- JavaScript payloads in request logs
- Multiple failed XSS attempts
Network Indicators:
- Suspicious script tags in HTTP requests
- Unusual outbound connections from AEM instances
SIEM Query:
source="aem_logs" AND ("script" OR "javascript" OR "onerror" OR "onload")