CVE-2024-7399
📋 TL;DR
This vulnerability allows attackers to write arbitrary files with system-level privileges on Samsung MagicINFO 9 Server by exploiting improper pathname restrictions. Attackers can potentially execute arbitrary code, modify system files, or install malware. All systems running MagicINFO 9 Server versions before 21.1050 are affected.
💻 Affected Systems
- Samsung MagicINFO 9 Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise leading to complete control of the server, data exfiltration, ransomware deployment, or use as a pivot point into the network.
Likely Case
Arbitrary file creation/modification leading to persistence mechanisms, privilege escalation, or service disruption.
If Mitigated
Limited impact if proper network segmentation and access controls prevent exploitation attempts.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 21.1050 or later
Vendor Advisory: https://security.samsungtv.com/securityUpdates
Restart Required: Yes
Instructions:
1. Download MagicINFO 9 Server version 21.1050 or later from Samsung's official portal. 2. Backup current configuration and data. 3. Run the installer to upgrade. 4. Restart the server. 5. Verify the new version is running.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to MagicINFO Server to only trusted IP addresses and networks.
Use firewall rules to allow only specific source IPs to access MagicINFO Server ports
Application Whitelisting
windowsImplement application whitelisting to prevent execution of unauthorized binaries.
Configure Windows AppLocker or similar to allow only approved executables
🧯 If You Can't Patch
- Isolate the MagicINFO server in a dedicated network segment with strict firewall rules
- Implement strict file system permissions and monitor for unauthorized file modifications
🔍 How to Verify
Check if Vulnerable:
Check the MagicINFO Server version in the application interface or installation directory. Versions before 21.1050 are vulnerable.Check Version:
Check the 'About' section in MagicINFO Server GUI or examine the installation directory for version filesVerify Fix Applied:
Confirm the version shows 21.1050 or higher in the MagicINFO Server interface.📡 Detection & Monitoring
Log Indicators:
- Unusual file creation/modification in system directories
- Suspicious process execution with SYSTEM privileges
- Failed authentication attempts followed by file operations
Network Indicators:
- Unusual outbound connections from MagicINFO server
- Traffic patterns indicating file transfer or command and control
SIEM Query:
source="magicinfo_logs" AND (event_type="file_write" AND path="*..*" OR user="SYSTEM" AND process="unusual_executable")