CVE-2020-3769
📋 TL;DR
This CVE describes a server-side request forgery (SSRF) vulnerability in Adobe Experience Manager versions 6.5 and earlier. Attackers can exploit this to make the server send unauthorized requests to internal systems, potentially exposing sensitive information. Organizations running affected Adobe Experience Manager instances are at risk.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, retrieve sensitive data from internal systems, or pivot to attack other internal infrastructure.
Likely Case
Information disclosure from internal services accessible to the server, potentially exposing credentials, configuration data, or other sensitive information.
If Mitigated
Limited impact if network segmentation restricts server access to only necessary internal services and proper input validation is implemented.
🎯 Exploit Status
SSRF vulnerabilities typically require some level of access or interaction with the vulnerable application, but exploitation details are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Adobe Experience Manager 6.5 Service Pack 6 (6.5.6.0) or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb20-15.html
Restart Required: Yes
Instructions:
1. Download the latest service pack from Adobe's distribution portal. 2. Apply the service pack following Adobe's installation instructions. 3. Restart the Adobe Experience Manager instance. 4. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Network Segmentation
allRestrict the server's network access to only necessary internal services using firewall rules.
Input Validation
allImplement strict input validation for URL parameters to prevent SSRF attacks.
🧯 If You Can't Patch
- Implement strict network segmentation to limit the server's access to internal systems
- Deploy a web application firewall (WAF) with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check the Adobe Experience Manager version in the admin console or via the system information page. Versions 6.5 and earlier are vulnerable.Check Version:
Check the AEM admin console at /system/console/status-productinfo or examine the CRX package manager for installed service packs.Verify Fix Applied:
Verify the installed version is 6.5.6.0 or later and check that the patch is listed in the installed packages.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from the server to internal IP addresses
- Requests with unusual URL patterns or parameters
Network Indicators:
- Unexpected HTTP traffic from the AEM server to internal services
- Requests to internal IP ranges from the server
SIEM Query:
source_ip=AEM_SERVER_IP AND (dest_ip=INTERNAL_RANGE OR dest_port=INTERNAL_SERVICE_PORTS) AND protocol=HTTP