CVE-2025-27956
📋 TL;DR
A directory traversal vulnerability in WebLaudos 24.2 (04) allows remote attackers to access sensitive files outside the intended directory structure via the id parameter. This affects all systems running the vulnerable version of WebLaudos software.
💻 Affected Systems
- WebLaudos
📦 What is this software?
Weblaudos by Pixeon
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through access to configuration files, credentials, or other sensitive data stored on the server filesystem.
Likely Case
Unauthorized access to sensitive patient data, configuration files, or system information leading to data breach.
If Mitigated
Limited impact with proper file permissions and input validation controls in place.
🎯 Exploit Status
Simple directory traversal payloads can be used via the id parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor vendor for updates and apply when released.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to block directory traversal sequences in the id parameter.
Implement server-side validation to reject any id parameter containing '../', '..\', or similar traversal sequences
Web Application Firewall Rule
allAdd WAF rule to block directory traversal attempts.
Add rule to block requests with '../', '..\', or encoded equivalents in parameters
🧯 If You Can't Patch
- Implement network segmentation to isolate WebLaudos from sensitive systems
- Enable strict file permissions and limit web server access to only necessary directories
🔍 How to Verify
Check if Vulnerable:
Test by sending a request with directory traversal payload in id parameter (e.g., id=../../../etc/passwd) and check response.Check Version:
Check WebLaudos version in application interface or configuration files.Verify Fix Applied:
Attempt same traversal payloads and verify they are blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing '../', '..\', or encoded equivalents in parameters
- Unusual file access patterns from web server process
Network Indicators:
- HTTP requests with directory traversal sequences in URL parameters
SIEM Query:
web.url:*../* OR web.param:*../* OR web.url:*..\\*