CVE-2019-6295
📋 TL;DR
CVE-2019-6295 is a SQL injection vulnerability in Cleanto 5.0 that allows attackers to execute arbitrary SQL commands via the service_id parameter in assets/lib/service_method_ajax.php. This affects all Cleanto 5.0 installations with the vulnerable component accessible. Attackers can potentially read, modify, or delete database content.
💻 Affected Systems
- Cleanto
📦 What is this software?
Cleanto by Skymoonlabs
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or full system takeover via SQL injection to remote code execution chaining.
Likely Case
Database information disclosure, authentication bypass, or privilege escalation through SQL injection.
If Mitigated
Limited impact if proper input validation and parameterized queries are implemented, or if the vulnerable endpoint is inaccessible.
🎯 Exploit Status
The vulnerability is straightforward to exploit with basic SQL injection techniques. Public proof-of-concept details are available in the GitHub issue.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version of Cleanto if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement proper input validation and parameterized queries for the service_id parameter in service_method_ajax.php
Edit assets/lib/service_method_ajax.php to replace raw SQL queries with prepared statements
Access Restriction
allRestrict access to the vulnerable endpoint using web server configuration or application firewalls
Add deny rule in .htaccess: Deny from all
Configure web server to block access to assets/lib/service_method_ajax.php
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with SQL injection protection rules
- Isolate the Cleanto system in a segmented network with strict access controls
🔍 How to Verify
Check if Vulnerable:
Check if assets/lib/service_method_ajax.php exists and is accessible. Test with SQL injection payloads in the service_id parameter.Check Version:
Check Cleanto version in configuration files or admin panel. Look for version 5.0 indicators.Verify Fix Applied:
Verify that SQL injection attempts no longer succeed and that parameterized queries are implemented in the PHP file.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple requests to service_method_ajax.php with suspicious parameters
- SQL syntax in service_id parameter values
Network Indicators:
- HTTP requests to /assets/lib/service_method_ajax.php with SQL injection patterns in parameters
- Unusual database query patterns from web server
SIEM Query:
source="web_server" AND uri="/assets/lib/service_method_ajax.php" AND (param="service_id" AND value MATCH "['";]|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|OR 1=1")