CVE-2025-22924
📋 TL;DR
CVE-2025-22924 is a SQL injection vulnerability in OS4ED openSIS versions 7.0 through 9.1 that allows attackers to execute arbitrary SQL commands via the stu_id parameter in the Student.php module. This affects all organizations using vulnerable openSIS installations for student information management, potentially exposing sensitive student data and system control.
💻 Affected Systems
- OS4ED openSIS Classic
📦 What is this software?
Opensis by Os4ed
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, authentication bypass, and potential remote code execution on the underlying server.
Likely Case
Unauthorized access to sensitive student records (grades, personal information), data exfiltration, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation preventing database access.
🎯 Exploit Status
Exploitation requires access to the student module but SQL injection is well-understood and weaponization is probable given the public PoC.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Monitor OS4ED for official patches or updates. 2. Apply patches immediately when available. 3. Test in development environment before production deployment.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for the stu_id parameter in Student.php
Modify /modules/students/Student.php to use prepared statements with parameter binding
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns targeting the stu_id parameter
Configure WAF to block patterns like UNION SELECT, OR 1=1, --, ;, etc.
🧯 If You Can't Patch
- Implement network segmentation to isolate openSIS database from other systems
- Enable detailed logging and monitoring for SQL injection attempts on the stu_id parameter
🔍 How to Verify
Check if Vulnerable:
Test the stu_id parameter in /modules/students/Student.php with SQL injection payloads like ' OR '1'='1Check Version:
Check openSIS version in system configuration or admin panelVerify Fix Applied:
Verify that parameterized queries are implemented and SQL injection payloads no longer execute📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts from single IP
- Requests with SQL keywords in stu_id parameter
Network Indicators:
- HTTP requests containing SQL injection patterns in POST/GET parameters
- Unusual database connection patterns
SIEM Query:
source="web_logs" AND (uri="/modules/students/Student.php" AND (param="stu_id" AND value MATCH "(?i)(union|select|or|and|--|;)"))