CVE-2023-27213
📋 TL;DR
This SQL injection vulnerability in Online Student Management System v1.0 allows attackers to execute arbitrary SQL commands via the searchdata parameter in the student search functionality. Attackers can potentially access, modify, or delete database contents, including sensitive student information. Organizations using this specific version of the software are affected.
💻 Affected Systems
- Online Student Management System
📦 What is this software?
Online Student Management System by Online Student Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, and potential remote code execution via database functions.
Likely Case
Unauthorized access to sensitive student records (grades, personal information), potential privilege escalation, and data exfiltration.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository; exploitation requires minimal technical skill due to simple SQL injection vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Replace vulnerable code with parameterized queries or prepared statements in /eduauth/student/search.php.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for the searchdata parameter
Modify PHP code to use mysqli_real_escape_string() or similar functions
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to detect and block SQL injection attempts in POST/GET parameters
🧯 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 access attempts
🔍 How to Verify
Check if Vulnerable:
Test the /eduauth/student/search.php endpoint with SQL injection payloads in searchdata parameterCheck Version:
Check PHP files for version comments or review download source from sourcecodester.comVerify Fix Applied:
Verify that parameterized queries are implemented and SQL injection attempts return error messages without executing📡 Detection & Monitoring
Log Indicators:
- Unusual database queries from web server
- SQL syntax errors in application logs
- Multiple failed search attempts with special characters
Network Indicators:
- HTTP POST requests to search.php containing SQL keywords (UNION, SELECT, INSERT, etc.)
- Abnormal database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/eduauth/student/search.php" AND (searchdata CONTAINS "' OR" OR searchdata CONTAINS "UNION" OR searchdata CONTAINS "SELECT")🔗 References
- https://github.com/xiumulty/CVE/blob/main/online%20student%20management%20system%20v1.0/sql%20in%20search.php.md
- https://www.sourcecodester.com/php/16137/online-student-management-system-php-free-download.html
- https://github.com/xiumulty/CVE/blob/main/online%20student%20management%20system%20v1.0/sql%20in%20search.php.md
- https://www.sourcecodester.com/php/16137/online-student-management-system-php-free-download.html
