CVE-2024-27575
📋 TL;DR
CVE-2024-27575 is an absolute path traversal vulnerability in INOTEC Sicherheitstechnik WebServer CPS220/64 version 3.3.19 that allows remote attackers to read arbitrary files on the system. This affects organizations using the vulnerable INOTEC security technology web server product. Attackers can exploit this without authentication to access sensitive system files.
💻 Affected Systems
- INOTEC Sicherheitstechnik WebServer CPS220/64
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through reading of sensitive configuration files, credentials, or SSH keys leading to lateral movement and data exfiltration.
Likely Case
Unauthorized access to sensitive system files like /etc/passwd, configuration files, and potentially credential disclosure.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external exploitation attempts.
🎯 Exploit Status
The exploit requires only a simple HTTP GET request with a crafted parameter, making it trivial to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.inotec-licht.de/
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates and consider workarounds.
🔧 Temporary Workarounds
Network Access Control
linuxRestrict network access to the web server interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
Web Server Configuration
allDisable or restrict access to the vulnerable /cgi-bin/display endpoint
# Modify web server configuration to remove or secure the CGI endpoint
🧯 If You Can't Patch
- Isolate the affected device in a separate network segment with strict firewall rules
- Implement web application firewall (WAF) rules to block path traversal patterns in requests
🔍 How to Verify
Check if Vulnerable:
Send HTTP GET request: curl -v 'http://target_ip/cgi-bin/display?file=/etc/passwd' and check if system files are returnedCheck Version:
Check web interface or device documentation for firmware version informationVerify Fix Applied:
Attempt the same exploit request after applying controls - should return error or be blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing '/cgi-bin/display?file=' with absolute paths
- Multiple failed attempts to access system files
Network Indicators:
- HTTP GET requests to /cgi-bin/display with file parameter containing absolute paths
- Unusual file access patterns from single IP
SIEM Query:
source="web_server_logs" AND uri="/cgi-bin/display" AND query="*file=/*"