CVE-2024-27776
📋 TL;DR
CVE-2024-27776 is a critical path traversal vulnerability in MileSight DeviceHub that allows unauthenticated attackers to execute arbitrary code on affected systems. This vulnerability enables remote code execution by exploiting improper pathname restrictions. All organizations using vulnerable versions of MileSight DeviceHub are affected.
💻 Affected Systems
- MileSight DeviceHub
📦 What is this software?
Devicehub by Milesight
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to install malware, steal sensitive data, pivot to internal networks, and establish persistent backdoors.
Likely Case
Unauthenticated remote code execution leading to ransomware deployment, data exfiltration, or system disruption.
If Mitigated
Limited impact if proper network segmentation, web application firewalls, and strict access controls are implemented.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity, and the CVSS 9.8 score suggests weaponization is likely even without public PoC.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Specific version not provided in references; check vendor advisory
Vendor Advisory: https://www.gov.il/en/Departments/faq/cve_advisories
Restart Required: Yes
Instructions:
1. Check the vendor advisory for patched version. 2. Backup configuration and data. 3. Apply the security patch from MileSight. 4. Restart the DeviceHub service. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Network Segmentation
allIsolate MileSight DeviceHub from internet and restrict internal access
Configure firewall rules to block external access to DeviceHub ports
Web Application Firewall
allImplement WAF rules to block path traversal patterns
Add WAF rule: deny requests containing '../' or similar path traversal sequences
🧯 If You Can't Patch
- Immediately isolate the system from all networks and internet access
- Implement strict network access controls allowing only essential connections from trusted sources
🔍 How to Verify
Check if Vulnerable:
Check DeviceHub version against vendor advisory; test with controlled path traversal attempts if authorizedCheck Version:
Check DeviceHub web interface or configuration files for version informationVerify Fix Applied:
Verify installed version matches patched version from vendor; test that path traversal attempts are properly blocked📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns
- Requests containing '../' sequences
- Unexpected process execution
Network Indicators:
- Unusual outbound connections from DeviceHub
- Traffic to unexpected ports or IPs
SIEM Query:
source="DeviceHub" AND (url="*../*" OR process="unexpected_executable")