CVE-2023-4776
📋 TL;DR
This SQL injection vulnerability in the School Management System WordPress plugin allows attackers to execute arbitrary SQL commands on the database. Relatively low-privilege users like Teachers can exploit this to access, modify, or delete sensitive data. The vulnerability affects WordPress sites using vulnerable versions of this plugin.
💻 Affected Systems
- School Management System WordPress plugin
📦 What is this software?
Wpschoolpress by Igexsolutions
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, privilege escalation to administrator, and potential site takeover.
Likely Case
Unauthorized access to sensitive student/teacher data, grade manipulation, or extraction of WordPress credentials.
If Mitigated
Limited impact if proper input validation and query parameterization are implemented, though some data exposure may still occur.
🎯 Exploit Status
Exploitation requires authenticated access with Teacher privileges or higher. SQL injection occurs due to improper use of esc_sql() without proper query preparation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.5
Vendor Advisory: https://wpscan.com/vulnerability/59dd3917-01cb-479f-a557-021b2a5147df
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'School Management System' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 2.2.5+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the School Management System plugin until patched
Restrict user roles
allTemporarily remove Teacher roles or restrict their capabilities
🧯 If You Can't Patch
- Implement web application firewall (WAF) with SQL injection rules
- Restrict database user permissions to minimum required
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → School Management System → check version numberCheck Version:
wp plugin list --name='School Management System' --field=versionVerify Fix Applied:
Confirm plugin version is 2.2.5 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts from Teacher accounts
- Unexpected database schema changes
Network Indicators:
- SQL syntax in HTTP POST parameters
- Unusual database connection patterns
SIEM Query:
source="web_logs" AND (uri="*/wp-admin/*" OR uri="*/school-management/*") AND (query="UNION" OR query="SELECT *" OR query="DROP" OR query="INSERT")