CVE-2017-11380
📋 TL;DR
CVE-2017-11380 is a critical vulnerability in Trend Micro Deep Discovery Director where backup archives are encrypted with a static, hardcoded password across all installations. This allows attackers to decrypt and access sensitive backup data, potentially compromising the entire security management system. All users of Trend Micro Deep Discovery Director 1.1 are affected.
💻 Affected Systems
- Trend Micro Deep Discovery Director
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Deep Discovery Director appliance, allowing attackers to extract sensitive configuration data, credentials, and security policies, potentially leading to full network compromise.
Likely Case
Unauthorized access to backup archives containing sensitive system configuration, user credentials, and security policies that could be used for further attacks.
If Mitigated
Limited impact if backups are stored securely with additional encryption layers and access controls, though the fundamental vulnerability remains.
🎯 Exploit Status
Exploitation requires access to backup files, which may be obtained through other vulnerabilities or misconfigurations. The static password is publicly known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest version as specified in Trend Micro advisories
Vendor Advisory: https://success.trendmicro.com/solution/1117663
Restart Required: Yes
Instructions:
1. Log into Trend Micro Deep Discovery Director web interface. 2. Navigate to System > Update. 3. Download and apply the latest security update. 4. Restart the appliance as prompted.
🔧 Temporary Workarounds
Secure Backup Storage
allImplement additional encryption and access controls for backup archives stored on the system
Network Segmentation
allIsolate Deep Discovery Director appliance from untrusted networks and limit access to backup storage locations
🧯 If You Can't Patch
- Implement strict access controls to backup storage locations and monitor for unauthorized access attempts
- Use external encryption tools to re-encrypt backup archives with strong, unique passwords before storage
🔍 How to Verify
Check if Vulnerable:
Check if running Trend Micro Deep Discovery Director version 1.1. Review backup encryption methods and verify if static passwords are being used.Check Version:
Log into the web interface and check System > About or use SSH to check version information if available.Verify Fix Applied:
Verify the appliance version has been updated beyond the vulnerable version. Test backup encryption with the previously known static password to confirm it no longer works.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to backup files
- Failed decryption attempts with known static password
- Unusual backup extraction activities
Network Indicators:
- Unexpected network traffic to/from backup storage locations
- Data exfiltration patterns from the appliance
SIEM Query:
source="deep-discovery-director" AND (event_type="backup_access" OR event_type="decryption_failure")