CVE-2024-55232
📋 TL;DR
An Insecure Direct Object Reference (IDOR) vulnerability in PHPGurukul Online Notes Sharing Management System v1.0 allows unauthorized users to delete notes belonging to other accounts. This occurs due to missing authorization checks in the manage-notes.php module. All users of this specific version are affected.
💻 Affected Systems
- PHPGurukul Online Notes Sharing Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could systematically delete all user notes, causing complete data loss and disrupting the entire note-sharing service.
Likely Case
Targeted deletion of specific users' notes, leading to data loss and potential service disruption for affected individuals.
If Mitigated
With proper authorization checks, only authenticated users can delete their own notes, preventing unauthorized access.
🎯 Exploit Status
Exploitation requires basic web request manipulation but does not need authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available; implement authorization checks in manage-notes.php to verify user permissions before allowing note deletion.
🔧 Temporary Workarounds
Implement Authorization Check
allAdd server-side validation to ensure users can only delete their own notes by checking session/user IDs against note ownership.
Modify manage-notes.php to include: if ($_SESSION['user_id'] != $note_owner_id) { die('Unauthorized'); }
Disable Note Deletion
allTemporarily disable the note deletion functionality until a proper fix is implemented.
Comment out or remove delete functionality in manage-notes.php
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious delete requests.
- Monitor and audit all delete operations in the application logs for unauthorized activity.
🔍 How to Verify
Check if Vulnerable:
Test if you can delete another user's note by manipulating the note ID parameter in a delete request without proper authorization.Check Version:
Check the system version in the application's admin panel or configuration files.Verify Fix Applied:
Verify that attempting to delete another user's note returns an authorization error or fails.📡 Detection & Monitoring
Log Indicators:
- Multiple DELETE requests to manage-notes.php with different note IDs from the same user session.
- Failed authorization attempts for note deletion.
Network Indicators:
- Unusual patterns of HTTP DELETE requests to the manage-notes.php endpoint.
SIEM Query:
source="web_logs" AND uri="/manage-notes.php" AND method="DELETE" AND response_code=200 | stats count by src_ip