CVE-2019-19605
📋 TL;DR
CVE-2019-19605 is a critical memory corruption vulnerability in X-Plane flight simulator software that allows remote attackers to write arbitrary data to memory via crafted network packets. This could lead to denial of service or remote code execution. Users running X-Plane versions before 11.41 are affected.
💻 Affected Systems
- X-Plane
📦 What is this software?
X Plane by X Plane
⚠️ Risk & Real-World Impact
Worst Case
Remote unauthenticated attacker gains full control of the system running X-Plane, potentially leading to complete system compromise and lateral movement within networks.
Likely Case
Remote code execution leading to installation of malware, data theft, or system disruption for X-Plane users with network connectivity.
If Mitigated
Limited impact if X-Plane is isolated from untrusted networks, though local network attacks remain possible.
🎯 Exploit Status
Public exploit details and proof-of-concept code are available in the referenced blog posts. The vulnerability requires network access to X-Plane but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 11.41 and later
Vendor Advisory: https://www.x-plane.com/kb/x-plane-11-41-release-notes/
Restart Required: Yes
Instructions:
1. Launch X-Plane. 2. Go to Settings > Check for New Beta. 3. Update to version 11.41 or later. 4. Restart X-Plane after update completes.
🔧 Temporary Workarounds
Network Isolation
allBlock all network traffic to X-Plane using firewall rules to prevent remote exploitation.
Windows: netsh advfirewall firewall add rule name="Block X-Plane" dir=in action=block program="C:\Program Files\X-Plane 11\X-Plane.exe" enable=yes
Linux: iptables -A INPUT -p tcp --dport 49000:49010 -j DROP
macOS: sudo pfctl -f /etc/pf.conf (configure rules in pf.conf)
Disable Network Features
allDisable all network connectivity within X-Plane settings to prevent packet processing.
🧯 If You Can't Patch
- Isolate X-Plane systems on separate VLAN with strict network segmentation.
- Implement host-based firewall rules to block all inbound connections to X-Plane ports.
🔍 How to Verify
Check if Vulnerable:
Check X-Plane version in Settings > About X-Plane. If version is below 11.41, system is vulnerable.Check Version:
Windows: wmic datafile where name="C:\\Program Files\\X-Plane 11\\X-Plane.exe" get version | findstr /v "Version"
Linux/macOS: strings "X-Plane.app/Contents/MacOS/X-Plane" | grep -i "version"Verify Fix Applied:
Verify X-Plane version is 11.41 or higher in Settings > About X-Plane after update.📡 Detection & Monitoring
Log Indicators:
- Unusual network connections to X-Plane ports (49000-49010)
- X-Plane crash logs with memory access violations
- Unexpected process creation from X-Plane executable
Network Indicators:
- Malformed UDP packets to X-Plane ports
- Unusual traffic patterns to/from X-Plane network ports
- Exploit-specific payload patterns in network traffic
SIEM Query:
source="xplane.log" AND ("access violation" OR "segmentation fault" OR "memory corruption") OR destination_port IN (49000, 49001, 49002, 49003, 49004, 49005, 49006, 49007, 49008, 49009, 49010) AND protocol="UDP" AND payload_size>1000