CVE-2025-6871
📋 TL;DR
A critical SQL injection vulnerability in SourceCodester Simple Company Website 1.0 allows remote attackers to execute arbitrary SQL commands via the Username parameter in /classes/Login.php. This affects all users running the vulnerable version of this web application, potentially leading to unauthorized data access or system compromise.
💻 Affected Systems
- SourceCodester Simple Company Website
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data exfiltration, privilege escalation, and potential remote code execution via database functions.
Likely Case
Unauthorized access to sensitive user data, authentication bypass, and potential website defacement.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages visible.
🎯 Exploit Status
Public proof-of-concept available on GitHub. SQL injection via login form requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Consider replacing with alternative software or implementing custom fixes.
🔧 Temporary Workarounds
Input Validation Filter
allAdd parameterized queries or input validation to /classes/Login.php to sanitize Username input
Modify Login.php to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE username = ?'); $stmt->bind_param('s', $username);
Web Application Firewall
allDeploy WAF with SQL injection rules to block malicious requests
🧯 If You Can't Patch
- Isolate the application behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from web server
🔍 How to Verify
Check if Vulnerable:
Test login form with SQL injection payloads like ' OR '1'='1 in username fieldCheck Version:
Check application files for version information, typically in README or configuration filesVerify Fix Applied:
Verify that SQL injection payloads no longer work and return proper error handling📡 Detection & Monitoring
Log Indicators:
- Unusual SQL syntax in login attempts
- Multiple failed login attempts with special characters
- Database error messages in application logs
Network Indicators:
- POST requests to /classes/Login.php containing SQL keywords
- Unusual database query patterns from web server
SIEM Query:
source=web_logs AND (uri="/classes/Login.php" AND (username CONTAINS "' OR" OR username CONTAINS "--" OR username CONTAINS ";"))