CVE-2018-11444
📋 TL;DR
CVE-2018-11444 is a critical SQL injection vulnerability in EasyService Billing 1.0 that allows attackers to execute arbitrary SQL commands through the 'q' parameter in jobcard-ongoing.php. This affects all users running EasyService Billing 1.0, potentially exposing sensitive database information and system control.
💻 Affected Systems
- EasyService Billing
📦 What is this software?
Easyservice Billing by Easyservice Billing Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, and full system takeover via SQL injection to remote code execution.
Likely Case
Unauthenticated attackers extracting sensitive customer data, financial records, and authentication credentials from the database.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Multiple public exploits available with simple HTTP requests demonstrating SQL injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - No official patch from vendor identified
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a supported version or implementing workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the 'q' parameter before processing
Modify jobcard-ongoing.php to add: $q = mysqli_real_escape_string($connection, $_GET['q']);
Web Application Firewall Rule
allBlock SQL injection patterns in the 'q' parameter
WAF rule: deny requests with SQL keywords in 'q' parameter
🧯 If You Can't Patch
- Implement network segmentation to isolate EasyService Billing from sensitive systems
- Deploy a web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Test with payload: jobcard-ongoing.php?q=' OR '1'='1 and check for SQL errors or unexpected resultsCheck Version:
Check EasyService Billing version in admin panel or configuration filesVerify Fix Applied:
Test same payload after fix - should return proper error or no data instead of executing SQL📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database queries from web application
- Multiple failed login attempts after SQL injection
Network Indicators:
- HTTP requests with SQL keywords in 'q' parameter
- Unusual database port traffic from web server
SIEM Query:
source="web_logs" AND (uri="*jobcard-ongoing.php*" AND (param="*q=*' OR*" OR param="*q=*' UNION*" OR param="*q=*' SELECT*"))