CVE-2024-34995
📋 TL;DR
svnWebUI v1.8.3 contains an arbitrary file deletion vulnerability in the UserController#importOver endpoint. Attackers can send crafted POST requests to delete arbitrary files on the server. This affects all deployments running the vulnerable version of svnWebUI.
💻 Affected Systems
- svnWebUI
⚠️ 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 deletion of critical system files, configuration files, or application data leading to service disruption, data loss, or privilege escalation.
Likely Case
Disruption of svnWebUI functionality, deletion of repository data, or removal of configuration files causing service outages.
If Mitigated
Limited impact to non-critical files in the web application directory if proper file permissions and access controls are implemented.
🎯 Exploit Status
Exploitation requires authentication to access the UserController#importOver endpoint. The vulnerability is documented in public GitHub issues with technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.8.4 or later
Vendor Advisory: https://github.com/cym1102/svnWebUI/issues/8
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Download latest version from official repository. 3. Stop svnWebUI service. 4. Replace files with patched version. 5. Restart svnWebUI service. 6. Verify functionality.
🔧 Temporary Workarounds
Restrict Access to UserController Endpoints
linuxImplement network access controls or web application firewall rules to restrict access to the vulnerable endpoint.
# Example: iptables rule to block specific endpoint
# iptables -A INPUT -p tcp --dport [svnWebUI-port] -m string --string "importOver" --algo bm -j DROP
File Permission Hardening
linuxRestrict write permissions on critical directories and files to the svnWebUI process only.
# Example: Restrict directory permissions
# chmod 750 /path/to/svnWebUI/
# chown -R svnwebui:svnwebui /path/to/svnWebUI/
🧯 If You Can't Patch
- Implement strict network segmentation to isolate svnWebUI from critical systems
- Enable detailed logging and monitoring for file deletion attempts on the svnWebUI server
🔍 How to Verify
Check if Vulnerable:
Check svnWebUI version in web interface or configuration files. Version 1.8.3 is vulnerable.Check Version:
# Check version in web interface or config file
# grep -i version /path/to/svnWebUI/config/*Verify Fix Applied:
Verify version is 1.8.4 or later. Test the importOver endpoint with controlled test files to ensure file deletion is properly restricted.📡 Detection & Monitoring
Log Indicators:
- POST requests to /UserController/importOver with dirTemps parameter
- File deletion events in system logs from svnWebUI process
- Unauthorized file access attempts
Network Indicators:
- HTTP POST requests containing dirTemps parameter with file paths
- Unusual file deletion patterns from svnWebUI server
SIEM Query:
source="svnWebUI" AND (uri_path="/UserController/importOver" OR message="*dirTemps*")