CVE-2025-9704
📋 TL;DR
CVE-2025-9704 is a SQL injection vulnerability in SourceCodester Water Billing System 1.0 that allows remote attackers to execute arbitrary SQL commands via the ID parameter in /viewbill.php. This can lead to unauthorized data access, modification, or deletion. Organizations using this specific water billing software are affected.
💻 Affected Systems
- SourceCodester Water Billing System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including sensitive customer data theft, billing manipulation, system takeover, and potential lateral movement to other systems.
Likely Case
Unauthorized access to billing records, customer information exposure, and potential data manipulation affecting billing accuracy.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or limited data exposure.
🎯 Exploit Status
Exploit code is publicly available on GitHub. SQL injection via ID parameter requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
1. Check vendor website for security updates 2. If patch available, download and apply 3. Test functionality after patching 4. Monitor for any issues
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize ID parameter before processing
Modify /viewbill.php to validate ID parameter as integer: if(!is_numeric($_GET['ID'])) { die('Invalid input'); }
Web Application Firewall
allDeploy WAF with SQL injection protection rules
🧯 If You Can't Patch
- Isolate the system from internet access and restrict to internal network only
- Implement strict network segmentation and monitor all database queries from the application
🔍 How to Verify
Check if Vulnerable:
Test /viewbill.php with SQL injection payloads like ' OR '1'='1 in ID parameter and check for database errors or unexpected responses.Check Version:
Check application files or documentation for version information, typically in readme files or configuration files.Verify Fix Applied:
After applying fixes, test with same SQL injection payloads and verify proper error handling or rejection of malicious input.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts
- Suspicious patterns in web server logs like 'viewbill.php?ID=' with SQL syntax
Network Indicators:
- Unusual database connection patterns
- HTTP requests to /viewbill.php with SQL injection patterns
SIEM Query:
source="web_logs" AND uri="/viewbill.php" AND (query="*OR*" OR query="*UNION*" OR query="*SELECT*" OR query="*--*" OR query="*;*" OR query="*'*")