CVE-2024-6049
📋 TL;DR
CVE-2024-6049 is a path traversal vulnerability in Lawo AG vsm LTC Time Sync (vTimeSync) web server that allows unauthenticated remote attackers to download arbitrary files from the operating system by sending specially crafted HTTP requests with triple dot sequences. This affects all systems running vulnerable versions of vTimeSync software. The vulnerability requires files to have specific extensions like .exe or .txt for successful exploitation.
💻 Affected Systems
- Lawo AG vsm LTC Time Sync (vTimeSync)
⚠️ 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
Attackers could download sensitive system files, configuration files, password files, or SSH keys, leading to complete system compromise and lateral movement within the network.
Likely Case
Attackers download configuration files containing credentials or sensitive information, enabling further attacks or data exfiltration.
If Mitigated
With proper network segmentation and access controls, impact is limited to the affected system only, preventing lateral movement.
🎯 Exploit Status
Exploitation requires simple HTTP requests with path traversal sequences. Public disclosure includes technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references, but vendor has released updates
Vendor Advisory: https://lawo.com/lawo-downloads/
Restart Required: Yes
Instructions:
1. Visit Lawo downloads page 2. Download latest vTimeSync version 3. Install update following vendor instructions 4. Restart service/system
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to vTimeSync web interface using firewall rules
iptables -A INPUT -p tcp --dport [vTimeSync_port] -s [trusted_ips] -j ACCEPT
iptables -A INPUT -p tcp --dport [vTimeSync_port] -j DROP
Web Server Disable
linuxDisable web server component if not required for functionality
systemctl stop [vTimeSync_service]
chkconfig [vTimeSync_service] off
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vTimeSync systems from critical networks
- Deploy web application firewall (WAF) with path traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Test with HTTP request containing triple dot path traversal sequences (e.g., GET /../../../etc/passwd HTTP/1.1) to vTimeSync web interfaceCheck Version:
Check vTimeSync version in web interface or system documentationVerify Fix Applied:
Attempt same path traversal requests after patch - should return 404 or access denied errors instead of file contents📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing '...' sequences
- Requests for unusual file paths outside web root
- Multiple 200 OK responses for non-standard file requests
Network Indicators:
- HTTP GET requests with triple dot sequences in URL
- Unusual file downloads from vTimeSync server
SIEM Query:
source="vTimeSync_logs" AND (url="*...*" OR url="*../*")