CVE-2020-25762
📋 TL;DR
CVE-2020-25762 is an SQL injection vulnerability in SourceCodester Seat Reservation System 1.0 that allows unauthenticated attackers to bypass authentication and potentially extract sensitive data. The vulnerability exists in the admin login endpoint where user input isn't properly validated. Organizations using this specific software version are affected.
💻 Affected Systems
- SourceCodester Seat Reservation System
📦 What is this software?
Seat Reservation System by Seat Reservation System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise including admin account takeover, database exfiltration, and potential remote code execution.
Likely Case
Authentication bypass leading to unauthorized admin access and sensitive data exposure.
If Mitigated
Limited impact with proper input validation and database permissions in place.
🎯 Exploit Status
Public exploit code available on Packet Storm and Full Disclosure mailing list. Simple SQL injection payloads work.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to newer version if exists, or implement workarounds.
🔧 Temporary Workarounds
Input Validation Implementation
allAdd parameterized queries and input validation to admin_class.php
Edit admin_class.php to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE username = ? AND password = ?'); $stmt->bind_param('ss', $username, $password);
Web Application Firewall Rules
allBlock SQL injection patterns at the WAF level
Add WAF rule to block requests containing SQL keywords like UNION, SELECT, INSERT, DELETE, DROP to /admin/ajax.php
🧯 If You Can't Patch
- Isolate the system from internet access and restrict to internal network only
- Implement strict network segmentation and monitor all traffic to the affected endpoint
🔍 How to Verify
Check if Vulnerable:
Test with SQL injection payload: Send POST request to /admin/ajax.php?action=login with username=admin' OR '1'='1&password=anythingCheck Version:
Check software version in admin panel or readme filesVerify Fix Applied:
Attempt same SQL injection payload and verify it returns authentication failure instead of success📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts with SQL patterns in username/password fields
- Successful admin logins from unusual IP addresses
Network Indicators:
- HTTP POST requests to /admin/ajax.php containing SQL keywords
- Unusual database query patterns from web server
SIEM Query:
source=web_logs AND (uri_path="/admin/ajax.php" AND (request_body CONTAINS "UNION" OR request_body CONTAINS "SELECT" OR request_body CONTAINS "OR '1'='1"))🔗 References
- http://packetstormsecurity.com/files/159261/Seat-Reservation-System-1.0-SQL-Injection.html
- http://seclists.org/fulldisclosure/2020/Sep/42
- https://packetstormsecurity.com/files/author/15149
- http://packetstormsecurity.com/files/159261/Seat-Reservation-System-1.0-SQL-Injection.html
- http://seclists.org/fulldisclosure/2020/Sep/42
- https://packetstormsecurity.com/files/author/15149
