CVE-2024-50630
📋 TL;DR
This vulnerability allows remote attackers to obtain administrator credentials in Synology Drive Server due to missing authentication for a critical web API function. Attackers can exploit this to gain administrative access to the system. All organizations running vulnerable versions of Synology Drive Server are affected.
💻 Affected Systems
- Synology Drive Server
📦 What is this software?
Drive Server by Synology
Drive Server by Synology
Drive Server by Synology
Drive Server by Synology
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Synology Drive Server with administrative access, potential data exfiltration, ransomware deployment, and lateral movement to connected systems.
Likely Case
Attackers obtain administrator credentials and gain full control over Synology Drive Server, accessing all stored files and user data.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external access to vulnerable systems.
🎯 Exploit Status
The advisory mentions 'unspecified vectors' but authentication bypass suggests attackers need to discover the vulnerable endpoint and craft appropriate requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.4-12699, 3.2.1-23280, 3.5.0-26085, or 3.5.1-26102 and later
Vendor Advisory: https://www.synology.com/en-global/security/advisory/Synology_SA_24_21
Restart Required: No
Instructions:
1. Log into DSM as administrator. 2. Open Package Center. 3. Find Synology Drive Server. 4. Click Update if available. 5. Alternatively, download the patched version from Synology's website and manually install.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to Synology Drive Server web interface using firewall rules
Disable WebAPI if Not Needed
allTemporarily disable the webapi component if not required for operations
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Synology Drive Server from untrusted networks
- Enable multi-factor authentication for all administrator accounts and monitor for suspicious login attempts
🔍 How to Verify
Check if Vulnerable:
Check Synology Drive Server version in Package Center or via SSH: synopkg version DriveServerCheck Version:
synopkg version DriveServerVerify Fix Applied:
Verify version is 3.0.4-12699, 3.2.1-23280, 3.5.0-26085, 3.5.1-26102 or later📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts to webapi endpoints
- Administrator credential access from unexpected IP addresses
- Failed authentication attempts followed by successful admin access
Network Indicators:
- Unusual HTTP requests to /webapi/* endpoints from external IPs
- Traffic patterns suggesting credential harvesting
SIEM Query:
source="synology" AND (event="authentication" OR event="api_access") AND (user="admin" OR user="administrator") AND src_ip NOT IN [trusted_ips]