CVE-2025-4887
📋 TL;DR
This CSRF vulnerability in SourceCodester Online Student Clearance System 1.0 allows attackers to trick authenticated users into performing unintended actions by crafting malicious requests. The vulnerability affects all users of this specific software version and can be exploited remotely without requiring authentication to the target system.
💻 Affected Systems
- SourceCodester Online Student Clearance System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could manipulate student clearance records, modify user permissions, or perform administrative actions on behalf of authenticated users, potentially compromising data integrity and system functionality.
Likely Case
Attackers would typically use this to modify user settings, change clearance statuses, or perform limited administrative actions that don't require elevated privileges.
If Mitigated
With proper CSRF protections and user awareness, impact is minimal as legitimate requests would be validated and users would be alerted to suspicious activities.
🎯 Exploit Status
Exploit requires the victim to be authenticated and visit a malicious page. The vulnerability is well-documented in public repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates or consider alternative solutions.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all state-changing requests and validate them server-side
Manual code modification required - add CSRF token generation and validation to all forms and AJAX requests
SameSite Cookie Attribute
allSet SameSite=Strict or SameSite=Lax attributes on session cookies
Set-Cookie: sessionid=xxx; SameSite=Strict; HttpOnly; Secure
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF patterns
- Educate users about the risks of clicking unknown links while authenticated and implement session timeouts
🔍 How to Verify
Check if Vulnerable:
Test forms and state-changing endpoints for missing CSRF tokens by attempting requests without proper validationCheck Version:
Check application version in admin panel or about page, or examine source code version markersVerify Fix Applied:
Verify that all POST/PUT/DELETE requests require and validate CSRF tokens, and that SameSite cookie attributes are properly set📡 Detection & Monitoring
Log Indicators:
- Multiple failed state-changing requests from same IP
- Requests missing expected referrer headers or CSRF tokens
Network Indicators:
- Unusual POST requests originating from external domains
- Requests with mismatched referrer headers
SIEM Query:
source="web_logs" AND (http_method="POST" OR http_method="PUT" OR http_method="DELETE") AND NOT csrf_token=* AND response_code=200