CVE-2020-9643
📋 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 vulnerability to make the server send unauthorized requests to internal systems, potentially exposing sensitive information. Organizations using affected Adobe Experience Manager versions are at risk.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of internal network resources, data exfiltration from internal systems, and potential lateral movement to other critical infrastructure.
Likely Case
Unauthorized access to internal services, exposure of sensitive configuration data, and potential credential harvesting from metadata services.
If Mitigated
Limited to unsuccessful SSRF attempts with proper network segmentation and input validation controls in place.
🎯 Exploit Status
Exploitation requires understanding of SSRF techniques and knowledge of internal network targets.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply security updates as specified in APSB20-31
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb20-31.html
Restart Required: Yes
Instructions:
1. Review APSB20-31 advisory. 2. Download appropriate security updates from Adobe. 3. Apply patches following Adobe's deployment guidelines. 4. Restart affected services. 5. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
allRestrict outbound network access from Adobe Experience Manager servers to only necessary internal services
Input Validation
allImplement strict URL validation and whitelisting for all user-supplied URL parameters
🧯 If You Can't Patch
- Implement strict network egress filtering to limit what internal resources the server can access
- Deploy web application firewall (WAF) rules to detect and block SSRF patterns
🔍 How to Verify
Check if Vulnerable:
Check Adobe Experience Manager version against affected versions (6.5 and earlier)Check Version:
Check AEM version through admin console or system informationVerify Fix Applied:
Verify that security updates from APSB20-31 have been applied and version is no longer vulnerable📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from AEM server
- Requests to internal IP addresses or metadata services
- Failed SSRF attempts in application logs
Network Indicators:
- AEM server making unexpected requests to internal services
- Traffic to cloud metadata endpoints (169.254.169.254, etc.)
SIEM Query:
source_ip:AEM_server AND (dest_ip:INTERNAL_RANGE OR dest_ip:169.254.169.254)