CVE-2025-50490
📋 TL;DR
This vulnerability allows attackers to hijack user sessions in PHPGurukul Student Result Management System by exploiting improper session invalidation in the password change component. Attackers can potentially gain unauthorized access to student or administrator accounts. Organizations using version 2.0 of this system are affected.
💻 Affected Systems
- PHPGurukul Student Result Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access, manipulate student grades, access sensitive personal data, or compromise the entire system.
Likely Case
Attackers hijack student or teacher sessions to view or modify grades, access personal information, or perform unauthorized actions within the system.
If Mitigated
With proper session management controls, attackers would be unable to maintain hijacked sessions or access would be limited to low-privilege accounts.
🎯 Exploit Status
Exploitation requires initial access to a valid session, but the attack technique is straightforward once session access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://phpgurukul.com
Restart Required: No
Instructions:
1. Check vendor website for security updates. 2. If patch available, download and apply. 3. Modify /elms/emp-changepassword.php to properly invalidate sessions after password changes.
🔧 Temporary Workarounds
Disable vulnerable component
linuxTemporarily disable or restrict access to the password change functionality
# Rename or move the vulnerable file
mv /path/to/elms/emp-changepassword.php /path/to/elms/emp-changepassword.php.disabled
Implement session regeneration
allAdd session regeneration after password changes
# In emp-changepassword.php, add after successful password change:
session_regenerate_id(true);
$_SESSION = array();
🧯 If You Can't Patch
- Implement network segmentation to isolate the system from untrusted networks
- Enable detailed session logging and monitor for suspicious session activity
🔍 How to Verify
Check if Vulnerable:
Check if /elms/emp-changepassword.php exists and examine its session handling code for proper invalidation after password changes.Check Version:
Check system documentation or configuration files for version informationVerify Fix Applied:
Test password change functionality to ensure sessions are properly invalidated and new sessions are created.📡 Detection & Monitoring
Log Indicators:
- Multiple successful logins from different IPs for same user
- Password changes without corresponding session termination
- Session IDs persisting after password changes
Network Indicators:
- Unusual session patterns
- Multiple concurrent sessions for single users
SIEM Query:
source="web_logs" (url="/elms/emp-changepassword.php") AND (status=200) | stats count by src_ip, user