CVE-2023-27257
📋 TL;DR
This vulnerability allows unauthenticated attackers to retrieve student information from IDAttend's IDWeb application by exploiting missing authentication in the GetActiveToiletPasses method. It affects organizations using IDWeb version 3.1.052 and earlier for student attendance management. The exposure of student data violates privacy regulations and could enable further attacks.
💻 Affected Systems
- IDAttend IDWeb
📦 What is this software?
Idweb by Idattend
⚠️ Risk & Real-World Impact
Worst Case
Mass exfiltration of all student records including personally identifiable information, leading to identity theft, regulatory fines, and reputational damage.
Likely Case
Unauthorized access to student attendance and personal data, potentially enabling social engineering or harassment campaigns.
If Mitigated
Limited exposure if network segmentation restricts access, but authentication bypass remains a concern.
🎯 Exploit Status
The vulnerability is straightforward to exploit once the endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.1.053 or later
Vendor Advisory: https://www.themissinglink.com.au/security-advisories/cve-2023-27257
Restart Required: Yes
Instructions:
1. Download the latest version from IDAttend vendor. 2. Backup current installation and data. 3. Install the updated version. 4. Restart the IDWeb service. 5. Verify authentication is required for GetActiveToiletPasses endpoint.
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to IDWeb application using firewall rules to only allow trusted IP addresses.
Web Application Firewall
allDeploy WAF rules to block unauthenticated requests to the GetActiveToiletPasses endpoint.
🧯 If You Can't Patch
- Isolate the IDWeb server in a restricted network segment with no internet access.
- Implement strict authentication proxy in front of the application to validate all requests.
🔍 How to Verify
Check if Vulnerable:
Send an unauthenticated HTTP GET request to the GetActiveToiletPasses endpoint. If it returns student data without authentication, the system is vulnerable.Check Version:
Check the application version in the web interface or configuration files (typically version.txt or web.config).Verify Fix Applied:
Attempt the same unauthenticated request after patching. It should return an authentication error or no data.📡 Detection & Monitoring
Log Indicators:
- Multiple unauthenticated requests to GetActiveToiletPasses endpoint
- Unusual data retrieval patterns from student databases
Network Indicators:
- HTTP requests to /GetActiveToiletPasses without authentication headers
- Unusual outbound data transfers containing student information
SIEM Query:
source="idweb.log" AND (uri="/GetActiveToiletPasses" AND NOT auth_token=*)