CVE-2024-31552
📋 TL;DR
CVE-2024-31552 is an arbitrary file download vulnerability in CuteHttpFileServer v3.1 that allows attackers to download any file from the server filesystem. This affects all deployments running the vulnerable version, potentially exposing sensitive configuration files, credentials, and other server data.
💻 Affected Systems
- CuteHttpFileServer
⚠️ 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 server compromise through theft of sensitive files like configuration files, SSH keys, database credentials, and application source code, leading to lateral movement and data exfiltration.
Likely Case
Attackers download sensitive configuration files, user data, or application source code, potentially enabling further attacks or data theft.
If Mitigated
Limited impact with proper file permissions and network segmentation preventing access to critical system files.
🎯 Exploit Status
The vulnerability is path traversal based, requiring minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided in references
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Implement Input Validation
allAdd path traversal validation to block directory traversal attempts
Modify server code to sanitize file paths and reject requests containing '../' sequences
Restrict File Access
linuxConfigure server to only serve files from a specific directory with proper permissions
chmod 750 /var/www/files
chown www-data:www-data /var/www/files
🧯 If You Can't Patch
- Disable or remove CuteHttpFileServer v3.1 from production environments
- Implement network segmentation and firewall rules to restrict access to the vulnerable service
🔍 How to Verify
Check if Vulnerable:
Check the server version in configuration or about page. If running CuteHttpFileServer v3.1, it is vulnerable.Check Version:
Check server documentation or configuration files for version informationVerify Fix Applied:
Test if path traversal attempts (e.g., requesting '../../etc/passwd') are blocked and return appropriate error responses.📡 Detection & Monitoring
Log Indicators:
- Multiple requests containing '../' sequences
- Requests for unusual file paths outside expected directories
- Failed attempts to access system files
Network Indicators:
- Unusual file download patterns
- Requests for known sensitive files like /etc/passwd, web.config, etc.
SIEM Query:
source="cutehttpfileserver" AND (url="*../*" OR url="*/etc/passwd*" OR url="*/web.config*")