CVE-2024-46888 Siemens CVE debrief

Who should care

Organizations operating Siemens SINEC INS in industrial network environments, OT security teams managing Siemens industrial infrastructure, and security administrators responsible for network management systems in critical infrastructure sectors.

Technical summary

Siemens SINEC INS contains a path traversal vulnerability in its SFTP-based file upload and download functionality. The application fails to properly sanitize user-provided file paths, allowing authenticated remote attackers to traverse the file system and access or modify files outside intended directories. This path manipulation can lead to arbitrary file write capabilities, enabling attackers to achieve arbitrary code execution on the affected device. The vulnerability requires authentication but is exploitable over the network with low attack complexity.

Defensive priority

critical

Recommended defensive actions

• Apply vendor fix: Update SINEC INS to V1.0 SP2 Update 3 or later version per Siemens advisory
• Restrict network access to SINEC INS management interfaces to authorized administrative hosts only
• Monitor for anomalous SFTP file operations and unexpected file system modifications on SINEC INS hosts
• Review file system permissions to limit potential impact of path traversal attempts
• Implement network segmentation to isolate SINEC INS instances from untrusted networks

Evidence notes

CISA ICS advisory ICSA-24-319-08 and Siemens security advisory SSA-915275 document this vulnerability. CVSS 3.1 score of 9.9 reflects network attack vector, low complexity, and high impact across confidentiality, integrity, and availability with scope change.

Official resources