CVE-2023-38995
📋 TL;DR
This vulnerability in SCHUHFRIED v.8.22.00 allows remote attackers to retrieve the database password without authentication via a crafted curl command. This affects all systems running the vulnerable version of SCHUHFRIED software.
💻 Affected Systems
- SCHUHFRIED
📦 What is this software?
Schuhfried by Schuhfried
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise leading to data exfiltration, privilege escalation, and complete system takeover.
Likely Case
Database credential theft enabling unauthorized access to sensitive data and potential lateral movement.
If Mitigated
Limited impact if database is isolated with strong network segmentation and access controls.
🎯 Exploit Status
Simple curl command execution with no authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Contact SCHUHFRIED vendor for patch information and upgrade guidance.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to SCHUHFRIED application using firewall rules.
# Example: iptables -A INPUT -p tcp --dport [SCHUHFRIED_PORT] -j DROP
# Windows: netsh advfirewall firewall add rule name="Block SCHUHFRIED" dir=in action=block protocol=TCP localport=[SCHUHFRIED_PORT]
Application Firewall Rules
allBlock curl commands or suspicious HTTP requests to vulnerable endpoints.
# Use WAF or application firewall to block requests containing 'curl' or targeting vulnerable paths
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SCHUHFRIED systems
- Change database credentials and implement strong password policies
- Monitor for suspicious curl command execution and database access attempts
🔍 How to Verify
Check if Vulnerable:
Attempt to execute the curl command from the PoC against the SCHUHFRIED application endpoint.Check Version:
Check SCHUHFRIED application version in admin interface or configuration files.Verify Fix Applied:
Test if the curl exploit no longer returns database credentials after applying mitigations.📡 Detection & Monitoring
Log Indicators:
- Unusual curl commands in application logs
- Database connection attempts from unexpected sources
- Authentication failures or credential access patterns
Network Indicators:
- HTTP requests to SCHUHFRIED endpoints with curl user-agents
- Outbound database connections from application server
SIEM Query:
source="schuhfried_logs" AND (command="curl" OR password="*" OR credential="*")