CVE-2025-67397
📋 TL;DR
CVE-2025-67397 is a command injection vulnerability in Passy v1.6.3 that allows authenticated remote attackers to execute arbitrary commands on affected systems. This affects organizations using Passy v1.6.3 for password management or similar functions. Attackers can gain full control of vulnerable systems through crafted HTTP requests.
💻 Affected Systems
- Passy
📦 What is this software?
Passy by Passy
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, lateral movement, ransomware deployment, and persistent backdoor installation.
Likely Case
Attacker gains shell access to execute commands, potentially stealing credentials, installing malware, or disrupting services.
If Mitigated
Limited impact due to network segmentation, minimal privileges, and proper input validation preventing successful exploitation.
🎯 Exploit Status
Exploitation requires authenticated access but uses simple HTTP request manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.passy.it/
Restart Required: No
Instructions:
1. Check Passy website for security updates. 2. Upgrade to patched version when available. 3. Apply workarounds immediately.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to block command injection payloads
# Configure web application firewall rules to block suspicious patterns
# Implement parameter validation in application code
Network Segmentation
allIsolate Passy instances from critical systems
# Configure firewall rules to restrict Passy network access
# Use VLANs or network zones to separate Passy from sensitive systems
🧯 If You Can't Patch
- Disable or restrict access to Passy application interfaces
- Implement strict network controls and monitor for suspicious HTTP requests
🔍 How to Verify
Check if Vulnerable:
Check if running Passy v1.6.3 by examining version information in application interface or configuration files.Check Version:
Check Passy web interface or configuration files for version informationVerify Fix Applied:
Verify upgrade to version above v1.6.3 when patch becomes available.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in system logs
- Suspicious HTTP requests containing shell metacharacters
- Authentication logs showing unexpected access patterns
Network Indicators:
- HTTP requests with command injection payloads to Passy endpoints
- Outbound connections from Passy server to unexpected destinations
SIEM Query:
source="web_logs" AND (url="*passy*" AND (request="*;*" OR request="*|*" OR request="*`*" OR request="*$(*"))