CVE-2025-13768
📋 TL;DR
WebITR software developed by Uniong contains an authentication bypass vulnerability that allows authenticated remote attackers to log into the system as any user by modifying a specific parameter. Attackers need to first obtain a user ID to exploit this vulnerability. This affects all organizations using vulnerable versions of WebITR.
💻 Affected Systems
- WebITR
📦 What is this software?
Webitr by Uniong
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative privileges, access sensitive data, modify system configurations, and potentially pivot to other systems.
Likely Case
Attackers escalate privileges to access unauthorized data or perform unauthorized actions within the application.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the application layer with detection of anomalous login patterns.
🎯 Exploit Status
Requires authenticated access first, then parameter manipulation to bypass authentication checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.1.1
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-10539-21f45-2.html
Restart Required: Yes
Instructions:
1. Download WebITR version 2025.1.1 from Uniong's official website. 2. Backup current installation. 3. Apply the update following vendor instructions. 4. Restart the WebITR service.
🔧 Temporary Workarounds
Network Access Control
allRestrict access to WebITR to trusted IP addresses only
Parameter Validation
allImplement WAF rules to block suspicious parameter modifications
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WebITR from critical systems
- Enable detailed authentication logging and monitor for unusual login patterns
🔍 How to Verify
Check if Vulnerable:
Check WebITR version in administration panel or configuration filesCheck Version:
Check WebITR admin interface or consult vendor documentationVerify Fix Applied:
Verify version is 2025.1.1 or later and test authentication bypass attempts fail📡 Detection & Monitoring
Log Indicators:
- Multiple login attempts with different user IDs from same source
- Successful logins with unusual user privilege escalation
Network Indicators:
- Unusual authentication parameter patterns in HTTP requests
SIEM Query:
source="webitr" AND (event="login" AND user_id_changed=true) OR (event="privilege_escalation")