CVE-2025-25621
📋 TL;DR
Unifiedtransform 2.0 has an incorrect access control vulnerability that allows teachers to take attendance for other teachers. This affects all deployments of Unifiedtransform 2.0 where teacher accounts exist. The vulnerability is exploitable via a specific endpoint with teacher_id parameter manipulation.
💻 Affected Systems
- Unifiedtransform
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Teachers could systematically falsify attendance records for other teachers, potentially affecting payroll, performance evaluations, or compliance reporting.
Likely Case
Individual teachers accidentally or intentionally modifying attendance records for colleagues, causing data integrity issues.
If Mitigated
Minimal impact with proper access controls limiting teachers to their own attendance management.
🎯 Exploit Status
Exploitation requires teacher-level credentials but is trivial via parameter manipulation. Public PoC available on GitHub.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check GitHub repository for updates or apply workarounds.
🔧 Temporary Workarounds
Endpoint Access Restriction
allRestrict access to /courses/teacher/index endpoint to only allow teachers to manage their own attendance.
Modify application code to validate teacher_id parameter matches authenticated user's ID
Web Application Firewall Rule
allAdd WAF rule to block requests where teacher_id parameter doesn't match authenticated user.
Add custom WAF rule: Block if $teacher_id != $authenticated_user_id
🧯 If You Can't Patch
- Implement strict access control at application layer to verify teacher_id matches authenticated user
- Monitor /courses/teacher/index endpoint for unauthorized parameter manipulation attempts
🔍 How to Verify
Check if Vulnerable:
Authenticate as teacher A, access /courses/teacher/index?teacher_id=B&semester_id=1 where B is another teacher's ID. If successful, vulnerable.Check Version:
Check Unifiedtransform version in application interface or configuration files.Verify Fix Applied:
Repeat vulnerable check - should receive access denied or redirect to own teacher_id.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /courses/teacher/index with teacher_id parameter different from authenticated user
Network Indicators:
- Unusual patterns of attendance updates from single teacher account
SIEM Query:
source="web_logs" AND uri_path="/courses/teacher/index" AND teacher_id != authenticated_user_id