CVE-2022-25508
📋 TL;DR
An access control vulnerability in FreeTAKServer v1.9.8 allows unauthenticated attackers to create excessive routes, causing denial of service, or create malicious routes that could mislead legitimate users. This affects all deployments running the vulnerable version without proper authentication controls. Attackers can exploit this without any credentials.
💻 Affected Systems
- FreeTAKServer
📦 What is this software?
Freetakserver Ui by Freetakserver Ui Project
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption through resource exhaustion, combined with creation of false routes that could misdirect emergency responders or military personnel in critical situations.
Likely Case
Service degradation through route spam, potentially causing system instability and misleading legitimate users with fabricated route data.
If Mitigated
Minimal impact with proper authentication and rate limiting in place, though the vulnerability would still exist in the codebase.
🎯 Exploit Status
The vulnerability is straightforward to exploit - attackers simply need to send POST requests to the vulnerable endpoint without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.9.9 or later
Vendor Advisory: https://github.com/FreeTAKTeam/FreeTakServer/issues/291
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Stop FreeTAKServer service. 3. Update to v1.9.9 or later using pip: 'pip install --upgrade FreeTAKServer'. 4. Restart the service. 5. Verify the fix by testing the /ManageRoute/postRoute endpoint.
🔧 Temporary Workarounds
Implement Authentication
allAdd authentication requirements to the /ManageRoute/postRoute endpoint
# Configure authentication in FreeTAKServer configuration files
# Add authentication middleware to the route management endpoint
Rate Limiting
linuxImplement rate limiting on the vulnerable endpoint to prevent DoS attacks
# Configure rate limiting in web server (nginx/apache) or application layer
# Example nginx: limit_req_zone $binary_remote_addr zone=routezone:10m rate=10r/s;
🧯 If You Can't Patch
- Implement network-level access controls to restrict access to the vulnerable endpoint to trusted IPs only
- Deploy a web application firewall (WAF) with rules to detect and block excessive route creation attempts
🔍 How to Verify
Check if Vulnerable:
Check if you can send POST requests to /ManageRoute/postRoute without authentication and create routesCheck Version:
python -c "import FreeTAKServer; print(FreeTAKServer.__version__)"Verify Fix Applied:
After patching, verify that authentication is required for /ManageRoute/postRoute endpoint and excessive requests are blocked📡 Detection & Monitoring
Log Indicators:
- High volume of POST requests to /ManageRoute/postRoute from single IP
- Route creation attempts without authentication tokens
- Unusual spike in route creation activity
Network Indicators:
- Excessive HTTP POST traffic to route management endpoint
- Traffic patterns showing route creation without preceding authentication
SIEM Query:
source="*takserver*" AND (uri_path="/ManageRoute/postRoute" AND NOT auth_token=*) | stats count by src_ip