CVE-2024-53282
📋 TL;DR
This is a stored cross-site scripting (XSS) vulnerability in Synology Router Manager's WiFi Connect MAC Filter functionality. It allows authenticated administrators to inject malicious scripts that can read/write certain files and cause limited denial-of-service. Only users with administrator privileges on affected Synology routers are impacted.
💻 Affected Systems
- Synology Router Manager (SRM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with administrator credentials could execute arbitrary JavaScript in the router's web interface, potentially accessing sensitive router configuration files, modifying settings, or disrupting network services.
Likely Case
Malicious administrator or compromised admin account could inject scripts to read non-sensitive files, deface the web interface, or cause temporary service disruptions.
If Mitigated
With proper access controls and admin account security, impact is limited to authorized users only, reducing risk significantly.
🎯 Exploit Status
Requires administrator credentials but exploitation is straightforward once authenticated
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: SRM 1.3.1-9346-10 or later
Vendor Advisory: https://www.synology.com/en-global/security/advisory/Synology_SA_24_09
Restart Required: Yes
Instructions:
1. Log into Synology Router Manager web interface. 2. Navigate to Control Panel > Update & Restore. 3. Check for updates and install SRM 1.3.1-9346-10 or later. 4. Reboot the router after installation.
🔧 Temporary Workarounds
Restrict Admin Access
allLimit administrator account access to trusted users only and implement strong authentication
Disable WiFi Connect MAC Filter
allTemporarily disable the vulnerable functionality if not required
🧯 If You Can't Patch
- Implement strict access controls for admin accounts and monitor admin activity
- Use network segmentation to isolate router management interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check SRM version in Control Panel > Info Center > DSM/SRM VersionCheck Version:
ssh admin@router 'cat /etc.defaults/VERSION'Verify Fix Applied:
Verify SRM version is 1.3.1-9346-10 or later in Control Panel > Info Center📡 Detection & Monitoring
Log Indicators:
- Unusual admin login patterns
- Multiple failed login attempts to admin interface
- Unexpected configuration changes in MAC filter settings
Network Indicators:
- Unusual HTTP requests to router admin interface with script tags
- Suspicious traffic from admin IP addresses
SIEM Query:
source="router_logs" AND (event="admin_login" OR event="config_change") AND (user="admin" OR interface="web")