CVE-2021-47766
📋 TL;DR
Kmaleon 1.1.0.205 contains an authenticated SQL injection vulnerability in the 'tipocomb' parameter of kmaleonW.php. This allows attackers with valid credentials to manipulate database queries using boolean-based, error-based, and time-based blind SQL injection techniques. Organizations using Kmaleon 1.1.0.205 for legal case management are affected.
💻 Affected Systems
- Kmaleon
⚠️ 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
Complete database compromise including extraction of sensitive client data, case information, and potential privilege escalation to execute arbitrary commands on the database server.
Likely Case
Data exfiltration of sensitive legal case information, client details, and potential manipulation of case records.
If Mitigated
Limited impact with proper input validation and database permissions restricting unauthorized data access.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB (ID: 50499). Attack requires valid authentication credentials but uses common SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://web.archive.org/web/20210616143348/https://www.levelprograms.com/kmaleon-abogados/
Restart Required: No
Instructions:
1. Check vendor website for updated version
2. If patch available, download and install
3. Test functionality after update
4. No official patch has been identified as of analysis date
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation for the 'tipocomb' parameter to allow only expected values
Modify kmaleonW.php to validate/sanitize tipocomb parameter before database query
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting the kmaleonW.php endpoint
Add WAF rule: Block requests to kmaleonW.php containing SQL keywords in tipocomb parameter
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Kmaleon application to authorized users only
- Enable detailed logging of all database queries and monitor for suspicious patterns
🔍 How to Verify
Check if Vulnerable:
Test the kmaleonW.php endpoint with SQL injection payloads in the tipocomb parameter while authenticatedCheck Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Attempt SQL injection techniques against the patched endpoint and verify they are blocked or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual database query patterns from kmaleonW.php
- Multiple failed login attempts followed by SQL injection attempts
- Database errors containing SQL syntax in web server logs
Network Indicators:
- HTTP POST requests to kmaleonW.php with SQL keywords in parameters
- Unusual database traffic patterns from web server
SIEM Query:
source="web_logs" AND uri="*kmaleonW.php*" AND (param="*tipocomb*" AND (value="*SELECT*" OR value="*UNION*" OR value="*OR 1=1*"))