CVE-2025-22930
📋 TL;DR
This SQL injection vulnerability in OS4ED openSIS allows attackers to execute arbitrary SQL commands via the groupid parameter in the Group.php messaging component. All organizations running openSIS versions 7.0 through 9.1 are affected, potentially exposing sensitive student and administrative data.
💻 Affected Systems
- OS4ED openSIS Classic
📦 What is this software?
Opensis by Os4ed
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data exfiltration, privilege escalation, authentication bypass, and potential remote code execution via database functions.
Likely Case
Unauthorized access to sensitive student records, grades, personal information, and administrative data with potential for data manipulation.
If Mitigated
Limited impact with proper input validation and WAF protection, though SQL injection attempts would still be logged.
🎯 Exploit Status
Simple SQL injection via HTTP GET/POST parameters. Public proof-of-concept demonstrates exploitation technique.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Monitor OS4ED official channels for security updates. 2. Consider upgrading to latest version if available. 3. Apply input validation and parameterized queries manually if source code access is available.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns targeting the /messaging/Group.php endpoint and groupid parameter.
# Example ModSecurity rule: SecRule ARGS:groupid "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQLi attempt detected'"
# Example naxsi rule: MainRule "str:groupid" "msg:sql injection" "mz:ARGS" "s:$SQL:4" id:1001;
URL Rewrite Block
allBlock access to the vulnerable endpoint using web server rewrite rules.
# Apache: RewriteRule ^/messaging/Group\.php$ - [F,L]
# Nginx: location ~* ^/messaging/Group\.php$ { return 403; }
🧯 If You Can't Patch
- Implement strict input validation for the groupid parameter to only accept expected numeric values
- Deploy network segmentation to isolate openSIS instances and restrict access to authorized users only
🔍 How to Verify
Check if Vulnerable:
Test the /messaging/Group.php endpoint with SQL injection payloads in the groupid parameter (e.g., groupid=1' OR '1'='1). Monitor for database errors or unexpected responses.Check Version:
Check openSIS version in admin panel or review source code files for version indicatorsVerify Fix Applied:
After applying workarounds, attempt the same SQL injection tests and verify they are blocked or return expected error messages without exposing database information.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /messaging/Group.php with SQL keywords in parameters (UNION, SELECT, INSERT, etc.)
- Database error messages in application logs containing SQL syntax errors
- Unusual database queries originating from web application user
Network Indicators:
- HTTP traffic to /messaging/Group.php with suspicious parameter values
- Multiple rapid requests with different SQL injection payloads
SIEM Query:
source="web_server_logs" AND uri_path="/messaging/Group.php" AND (param="*groupid=*'*" OR param="*groupid=*%27*" OR param="*groupid=*UNION*" OR param="*groupid=*SELECT*")