CVE-2025-5369
📋 TL;DR
This critical vulnerability in SourceCodester PHP Display Username After Login 1.0 allows remote attackers to execute SQL injection attacks via the Username parameter in /login.php. Attackers can potentially access, modify, or delete database content. All users of this specific software version are affected.
💻 Affected Systems
- SourceCodester PHP Display Username After Login
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, authentication bypass, or full system takeover via SQL injection to RCE chaining.
Likely Case
Unauthorized database access allowing extraction of sensitive user data, credentials, or application information.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing successful exploitation.
🎯 Exploit Status
Exploit details are publicly available on GitHub. SQL injection via Username parameter is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Consider removing or replacing the vulnerable software.
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd strict input validation and parameterized queries to login.php
Modify login.php to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE username = ?'); $stmt->bind_param('s', $username);
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block SQL injection patterns in POST parameters
🧯 If You Can't Patch
- Remove or disable the vulnerable application immediately
- Implement network segmentation to isolate the vulnerable system
🔍 How to Verify
Check if Vulnerable:
Check if /login.php exists and contains unsanitized Username parameter handling. Test with SQL injection payloads like ' OR '1'='1Check Version:
Check software version in documentation or configuration filesVerify Fix Applied:
Verify that prepared statements are implemented and SQL injection payloads are rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts with SQL patterns
- Database error messages containing SQL syntax
Network Indicators:
- POST requests to /login.php with SQL keywords in parameters
- Unusual database connection patterns
SIEM Query:
source="web_logs" AND uri="/login.php" AND (payload CONTAINS "UNION" OR payload CONTAINS "SELECT" OR payload CONTAINS "OR '1'='1'")