CVE-2022-47532
📋 TL;DR
CVE-2022-47532 is a SQL injection vulnerability in FileRun 20220519 that allows attackers to execute arbitrary SQL commands via the 'dir' parameter in a specific web request. This can lead to unauthorized data access, modification, or deletion, affecting users of the vulnerable FileRun version.
💻 Affected Systems
- FileRun
📦 What is this software?
Filerun by Filerun
⚠️ Risk & Real-World Impact
Worst Case
Full compromise of the database, including data theft, deletion, or remote code execution if database privileges allow it.
Likely Case
Unauthorized access to sensitive user data, such as credentials or files, and potential privilege escalation.
If Mitigated
Limited impact if input validation or WAF blocks malicious requests, but risk remains if not patched.
🎯 Exploit Status
Exploitation is straightforward with publicly available proof-of-concept, requiring minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Later versions after 20220519; check vendor for specific fixed version.
Vendor Advisory: https://herolab.usd.de/security-advisories/usd-2022-0064/
Restart Required: No
Instructions:
1. Update FileRun to the latest patched version. 2. Follow vendor instructions for upgrading. 3. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Input Validation via WAF
allDeploy a web application firewall to block SQL injection patterns in the 'dir' parameter.
Configure WAF rules to filter malicious SQL payloads.
Parameter Sanitization
allImplement server-side input validation to sanitize the 'dir' parameter before processing.
Modify application code to escape or validate user inputs.
🧯 If You Can't Patch
- Restrict access to the vulnerable endpoint using network ACLs or authentication.
- Monitor logs for suspicious SQL injection attempts and implement intrusion detection.
🔍 How to Verify
Check if Vulnerable:
Test the endpoint /?module=users§ion=cpanel&page=list with a malicious 'dir' parameter payload to see if SQL errors are returned.Check Version:
Check the FileRun version in the admin panel or configuration files.Verify Fix Applied:
After patching, retest the same endpoint to ensure no SQL errors or unauthorized access occurs.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs, error messages related to SQL syntax from the 'dir' parameter.
Network Indicators:
- HTTP requests to the vulnerable endpoint with SQL injection payloads in parameters.
SIEM Query:
Example: search 'dir' AND 'SQL' in web server logs for FileRun instances.