CVE-2024-30009
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Windows systems running the Routing and Remote Access Service (RRAS) without authentication. Attackers can exploit this flaw by sending specially crafted packets to vulnerable RRAS servers. This affects Windows servers and workstations with RRAS enabled.
💻 Affected Systems
- Windows Routing and Remote Access Service (RRAS)
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to domain takeover, data exfiltration, ransomware deployment, and lateral movement across the network.
Likely Case
Initial foothold on vulnerable systems leading to privilege escalation, credential harvesting, and installation of backdoors or malware.
If Mitigated
Limited impact due to network segmentation, proper access controls, and monitoring preventing successful exploitation or containing the breach.
🎯 Exploit Status
Microsoft has rated this as 'Exploitation More Likely' in their advisory. The vulnerability requires no authentication and has low attack complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: May 2024 security updates
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30009
Restart Required: Yes
Instructions:
1. Apply the May 2024 Windows security updates from Microsoft. 2. Restart the system to complete the installation. 3. Verify the patch is applied using Windows Update history or system version checks.
🔧 Temporary Workarounds
Disable RRAS Service
windowsDisable the Routing and Remote Access Service if not required for business operations.
sc config RemoteAccess start= disabled
sc stop RemoteAccess
Block RRAS Ports
allBlock network access to RRAS ports (TCP 1723, UDP 1701, UDP 500, UDP 4500) at firewalls.
🧯 If You Can't Patch
- Disable RRAS service immediately if not required
- Implement strict network segmentation to isolate RRAS servers from critical assets
🔍 How to Verify
Check if Vulnerable:
Check if RRAS service is running: 'sc query RemoteAccess' and verify Windows version is unpatched.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify May 2024 security updates are installed via Windows Update history or check system version with 'systeminfo' command.📡 Detection & Monitoring
Log Indicators:
- Event ID 4688 for unexpected process creation
- Event ID 4625 for failed authentication attempts to RRAS
- Windows Security logs showing exploitation attempts
Network Indicators:
- Unusual traffic to RRAS ports (1723, 1701, 500, 4500) from unexpected sources
- Malformed packets targeting RRAS services
SIEM Query:
source="windows_security" event_id=4688 OR event_id=4625 | where process_name contains "RRAS" OR service_name="RemoteAccess"