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.
Overview
Samsung MagicINFO 9 Server, a digital signage content management platform, contains a path traversal and unrestricted file upload flaw that allows an attacker to write arbitrary files to any location on the server filesystem with system-level authority. All versions prior to 21.1050 are affected. By placing a web shell or similar payload in a web-accessible directory, an attacker can achieve remote code execution on the server, making this a high-severity exposure for any organization running an unpatched version on a reachable network.
Vulnerability details
MagicINFO 9 Server exposes a file-upload endpoint that fails to validate both the destination path and the type of file being submitted. The path traversal weakness (CWE-22) allows directory traversal sequences in attacker-controlled filename or path parameters to escape the intended upload directory. The unrestricted upload weakness (CWE-434) means the server also accepts files of arbitrary type and content. Together, these two gaps allow an attacker to place any file, including executable code, at any location the server process can write to, which in this case is system authority.
An attacker with network access to the server sends a crafted HTTP file-upload request containing path traversal sequences in the filename or path parameter, along with attacker-controlled file content such as a web shell. Whether valid credentials are required is disputed: NVD assesses the flaw as requiring no authentication, while the CNA secondary assessment requires low-privilege credentials. In either case, once the file is written to a web-accessible directory, the attacker can issue a follow-on HTTP request to execute it, achieving remote code execution as the system account.
Severity and impact
Exploitation status
This vulnerability is confirmed as actively exploited in the wild — it is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.
Detection and monitoring
- Monitor web server access logs for HTTP requests to the MagicINFO upload endpoint that contain path traversal sequences (e.g., '../' or URL-encoded equivalents '%2e%2e%2f') in filename or path parameters; these patterns have no legitimate use in normal content uploads.
- Alert on new files appearing outside the expected MagicINFO content directories, particularly files with executable or script extensions (e.g., .jsp, .aspx, .php) written under web-root paths, which would indicate successful traversal and payload placement.
Remediation
Additional hardening
- Upgrade MagicINFO 9 Server to version 21.1050 or later, where Samsung has modified the input verification logic to restrict pathname and file-type handling on the upload endpoint.
- Restrict network access to the MagicINFO 9 Server management interface using firewall rules or network segmentation so that only authorized internal hosts can reach the upload endpoint, reducing exposure to unauthenticated or low-privilege attackers.
- Apply least-privilege principles to the MagicINFO server process account; if the service cannot be run below system authority, use filesystem ACLs to limit write access to only the directories required for normal content delivery, reducing the impact of a successful traversal.
- Conduct a file-integrity sweep of the MagicINFO web root and application directories for unexpected script files, particularly if the server was internet-facing on a version prior to 21.1050, to identify any prior compromise.
Key dates
References
- https://security.samsungtv.com/securityUpdates
- https://nvd.nist.gov/vuln/detail/CVE-2024-7399
- https://arcticwolf.com/resources/blog-uk/arctic-wolf-observes-exploitation-of-path-traversal-vulnerability-in-samsung-magicinfo-9-server-cve-2024-7399/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-7399
Frequently asked questions
Does CVE-2024-7399 affect my FedRAMP authorization?
If Samsung MagicINFO 9 Server runs inside your authorization boundary, yes. CVE-2024-7399 is listed on CISA's Known Exploited Vulnerabilities (KEV) catalog, and its remediation deadline of May 8, 2026 has already passed. For a FedRAMP-authorized service, an unpatched KEV in the boundary is a finding, and an overdue one is visible to your assessor and sponsoring agency right now. Your path forward is to remediate it or formally document the mitigation and the delay.
How does Knox help me handle CVE-2024-7399?
Knox does not patch your software. Remediating Samsung MagicINFO 9 Server is your responsibility under the FedRAMP shared-responsibility model. What Knox provides is the pre-authorized, single-tenant boundary to remediate within, plus Knox's automated continuous monitoring platform and audit-artifact coverage that document the fix for your next assessment. The remediation work is yours to carry out; maintaining a defensible compliance posture while you do it is not something you have to manage on your own.
How does Knox's monitoring help with vulnerabilities like this?
Knox's automated continuous monitoring platform watches your environment for newly disclosed vulnerabilities and compliance issues on a continuous basis. For a CVE like CVE-2024-7399, that means exposure surfaces during ongoing monitoring rather than only when an assessor flags it at a scheduled review.
How do I get FedRAMP authorized with Knox?
Knox runs a FedRAMP-as-a-Service platform. It gives SaaS vendors a pre-authorized cloud boundary on AWS, Azure, and GCP. Your application inherits 60-80% of the required security controls. You reach FedRAMP authorization in about 90 days for roughly 90% less than the traditional $3.5M path. Book a meeting and Knox will map your path to authorization.
CVE-2024-7399's remediation deadline of May 8, 2026 has passed. What happens now?
An unremediated CVE-2024-7399 is already a Plan of Action and Milestones (POA&M) item, and a growing POA&M list is what turns a routine continuous-monitoring review into a difficult conversation with your sponsoring agency. Closing it out now and documenting why the deadline passed is what keeps your authorization clean and the agency relationship intact.
Ready to achieve FedRAMP authorization in 90 days or less?
Schedule a meeting to discuss scope, parse readiness, and map your company’s accelerated path to FedRAMP authorization.
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