CVE-2024-5827
📋 TL;DR
CVE-2024-5827 is a critical SQL injection vulnerability in Vanna v0.3.4's DuckDB integration that allows attackers to write arbitrary files to the server filesystem. This can lead to remote code execution via web shells like backdoor.php. Any organization using Vanna v0.3.4 with its Flask Web APIs exposed is affected.
💻 Affected Systems
- Vanna
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full server compromise with attacker gaining shell access, installing persistent backdoors, stealing data, and pivoting to other systems.
Likely Case
Web shell deployment leading to command execution, data exfiltration, and potential ransomware deployment.
If Mitigated
Limited impact with proper input validation and file system restrictions preventing arbitrary file writes.
🎯 Exploit Status
Exploit details published on huntr.com with working proof-of-concept for file write and RCE.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.3.5 or later
Vendor Advisory: https://huntr.com/bounties/e4e64a51-618b-41d0-8f56-1d2146d8825e
Restart Required: Yes
Instructions:
1. Update Vanna to v0.3.5 or later using pip: pip install --upgrade vanna>=0.3.5
2. Restart all Vanna services
3. Verify the update with: python -c "import vanna; print(vanna.__version__)"
🔧 Temporary Workarounds
Disable Flask Web APIs
allTemporarily disable the vulnerable Flask Web APIs until patching is possible
Modify Vanna configuration to disable Flask endpoints or restrict access
Implement WAF Rules
allAdd SQL injection and file write detection rules to web application firewall
Add WAF rules blocking SQL keywords and file path patterns in POST requests
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries for all SQL operations
- Restrict file system write permissions and implement file upload validation
🔍 How to Verify
Check if Vulnerable:
Check if running Vanna v0.3.4 with Flask Web APIs enabled and DuckDB integration activeCheck Version:
python -c "import vanna; print(vanna.__version__)"Verify Fix Applied:
Confirm version is v0.3.5 or later and test SQL injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in DuckDB logs
- File write operations to unexpected locations
- POST requests with SQL keywords to Flask endpoints
Network Indicators:
- HTTP requests containing SQL injection patterns to /api endpoints
- File uploads to non-standard paths
SIEM Query:
source="web_logs" AND (uri_path="/api/*" AND (request_body CONTAINS "UNION" OR request_body CONTAINS "SELECT" OR request_body CONTAINS "INSERT"))