CVE-2025-25539
📋 TL;DR
A Local File Inclusion vulnerability in Vasco v3.14 and earlier allows remote attackers to read sensitive files on the server through the help menu functionality. This affects all systems running vulnerable versions of Vasco software. Attackers can potentially access configuration files, credentials, or other sensitive data.
💻 Affected Systems
- Vasco
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through reading sensitive configuration files containing credentials, followed by lateral movement or data exfiltration.
Likely Case
Information disclosure of sensitive files, potentially exposing credentials, configuration details, or proprietary data.
If Mitigated
Limited impact with proper file permissions and network segmentation preventing access to critical system files.
🎯 Exploit Status
Public proof-of-concept available in provided references demonstrates trivial exploitation.
🛠️ 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 immediately when released.
🔧 Temporary Workarounds
Disable help menu functionality
allRemove or disable the vulnerable help menu component to prevent exploitation
# Consult Vasco documentation for disabling specific modules
Implement input validation
allAdd strict input validation to filter file path parameters
# Implement server-side validation for all file path inputs
🧯 If You Can't Patch
- Implement strict file system permissions to limit accessible directories
- Deploy web application firewall with LFI protection rules
🔍 How to Verify
Check if Vulnerable:
Test if help menu accepts file path parameters and can read system files like /etc/passwdCheck Version:
vasco --version or check configuration files for version informationVerify Fix Applied:
Verify help menu no longer accepts file path parameters or returns error for directory traversal attempts📡 Detection & Monitoring
Log Indicators:
- Unusual file path requests in help menu logs
- Multiple failed attempts to access system files
Network Indicators:
- HTTP requests with file path parameters to help endpoints
- Patterns of directory traversal sequences
SIEM Query:
source="vasco_logs" AND (url="*help*" AND (param="*../*" OR param="*..\\*"))