CVE-2024-53288
📋 TL;DR
This is a stored cross-site scripting (XSS) vulnerability in Synology Router Manager's NTP Region functionality. Authenticated administrators can inject malicious scripts that execute when other users view affected pages. Only Synology routers running SRM versions before 1.3.1-9346-11 are affected.
💻 Affected Systems
- Synology Router Manager (SRM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with administrator credentials could inject persistent malicious scripts that steal session cookies, perform actions as authenticated users, or redirect to phishing sites when other users access the NTP settings page.
Likely Case
Malicious administrator or compromised admin account could embed scripts to steal other users' session tokens or perform limited actions within the router management interface.
If Mitigated
With proper access controls and admin account security, impact is limited to the router management interface only, not affecting external systems.
🎯 Exploit Status
Exploitation requires administrator credentials. The 'unspecified vectors' in the description suggests the exact injection method isn't publicly detailed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: SRM 1.3.1-9346-11 and later
Vendor Advisory: https://www.synology.com/en-global/security/advisory/Synology_SA_24_16
Restart Required: Yes
Instructions:
1. Log into Synology Router Manager web interface. 2. Navigate to Control Panel > Update & Restore. 3. Click 'Update' and select SRM 1.3.1-9346-11 or later. 4. Follow prompts to complete update. 5. Router will restart automatically.
🔧 Temporary Workarounds
Restrict Admin Access
allLimit administrator account access to trusted personnel only and implement strong authentication.
Network Segmentation
allIsolate router management interface to internal network only, not exposed to internet.
🧯 If You Can't Patch
- Implement strict access controls for administrator accounts and enable multi-factor authentication
- Monitor router logs for unusual admin activity or unexpected changes to NTP settings
🔍 How to Verify
Check if Vulnerable:
Check SRM version in Control Panel > Info Center > DSM/SRM Version. If version is earlier than 1.3.1-9346-11, system is vulnerable.Check Version:
ssh admin@router-ip 'cat /etc.defaults/VERSION' or check web interfaceVerify Fix Applied:
After updating, verify version shows 1.3.1-9346-11 or later in Control Panel > Info Center.📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to NTP settings by admin accounts
- Multiple failed login attempts followed by successful admin login
Network Indicators:
- Unexpected outbound connections from router management interface
- Suspicious JavaScript payloads in HTTP requests to router
SIEM Query:
source="synology-router" (event_type="config_change" AND config_item="ntp") OR (auth_result="success" AND user_role="admin" AND src_ip NOT IN trusted_networks)