CVE-2024-7399: Samsung MagicINFO 9 Server Path Traversal Vulnerability

Samsung MagicINFO 9 Server contains a path traversal vulnerability that could allow an attacker to write arbitrary files as system authority. The issue affects organizations that rely on this server software for digital signage or information management. Because the flaw grants elevated write access, it can be used to place unauthorized content on the host system.

How it works

The weakness is tracked as CWE-22 and CWE-434. An attacker supplies crafted path elements that cause the application to write a file outside the intended directory. The resulting file is created with system-level privileges, allowing the attacker to place content that the operating system will later execute or trust.

Am I affected? How to find it in your systems

Inventory all instances of Samsung MagicINFO 9 Server in your environment. Typical deployments run on Windows or Linux servers that host centralized content distribution for display networks. Review installed software lists, configuration management databases, and network scans for the product name and version strings. Confirm the exact affected versions and configurations against the vendor advisory, as no public version list is provided here.

• Examine web server and application logs for requests containing directory traversal sequences such as ../ or encoded equivalents.
• Monitor file-system audit logs for unexpected writes to directories outside the application's normal content paths.
• Check for newly created executable or script files in system or temporary directories that cannot be attributed to normal operations.

How to remediate

Apply the vendor-supplied update referenced in the official advisory. After patching, review and enforce least-privilege file-system permissions on the server so that the application account cannot write outside designated directories. Validate all file-path inputs on any remaining or custom interfaces that accept user-supplied names.

If you can't patch immediately

Follow the mitigations listed in the vendor instructions. Where the server is reachable from untrusted networks, place it behind network segmentation that limits inbound connections to only required management hosts. Apply virtual patching or request-filtering rules at a web application firewall to block traversal sequences. If mitigations cannot be implemented, discontinue use of the product as stated in CISA guidance and applicable BOD 22-01 requirements for cloud services.

If your data may have been exposed

Actively exploited vulnerabilities of this class can result in unauthorized file placement and subsequent system compromise. Organizations should run a free exposure scan of their email domains to check for presence in known breach data sets and review authentication logs for any anomalous administrative activity on the affected servers.