CVE-2025-65379
📋 TL;DR
PHPGurukul Billing System 1.0 contains a SQL injection vulnerability in the password recovery functionality. Attackers can inject malicious SQL queries through the username and mobileno parameters, potentially accessing or manipulating database contents. All deployments of version 1.0 are affected.
💻 Affected Systems
- PHPGurukul Billing System
📦 What is this software?
Billing System by Phpgurukul
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise including credential theft, data exfiltration, and potential remote code execution via database functions.
Likely Case
Unauthorized access to user data, administrative credentials theft, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing successful exploitation.
🎯 Exploit Status
SQL injection is well-understood with many automated tools available. The vulnerability is in a public-facing endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://phpgurukul.com/billing-system-using-php-and-mysql/
Restart Required: No
Instructions:
1. Download latest version from vendor website if available
2. Replace vulnerable files with patched versions
3. Test functionality before deploying to production
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd server-side validation for username and mobileno parameters
Edit /admin/password-recovery.php to validate inputs before SQL query
Parameterized Query Implementation
allReplace concatenated SQL with prepared statements
Modify SQL queries to use mysqli_prepare() and mysqli_stmt_bind_param()
🧯 If You Can't Patch
- Implement WAF rules to block SQL injection patterns targeting /admin/password-recovery.php
- Restrict access to /admin/ directory via IP whitelisting or authentication
🔍 How to Verify
Check if Vulnerable:
Test /admin/password-recovery.php endpoint with SQL injection payloads in username or mobileno parametersCheck Version:
Check version in system documentation or configuration filesVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return expected error messages📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed password recovery attempts with SQL syntax in parameters
Network Indicators:
- HTTP requests to /admin/password-recovery.php containing SQL keywords like UNION, SELECT, OR 1=1
SIEM Query:
source="web_server" AND uri="/admin/password-recovery.php" AND (request_parameters CONTAINS "UNION" OR request_parameters CONTAINS "SELECT" OR request_parameters CONTAINS "OR 1=1")