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CVE-2024-34771 Siemens CVE debrief

A heap-based buffer overflow vulnerability exists in Siemens Solid Edge when parsing specially crafted PAR files. An attacker could exploit this to execute arbitrary code in the context of the current process. The vulnerability was disclosed on May 14, 2024, with a CVSS 3.1 score of 7.8 (HIGH). The attack requires local access and user interaction, as the victim must open a malicious PAR file. Siemens has released a vendor fix in V224.0 Update 2 or later versions.

Vendor
Siemens
Product
Solid Edge
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2024-05-14
Original CVE updated
2024-05-14
Advisory published
2024-05-14
Advisory updated
2024-05-14

Who should care

Organizations using Siemens Solid Edge for CAD/CAM operations, particularly in manufacturing, engineering, and industrial design sectors. Security teams responsible for endpoint protection in OT/ICS environments with engineering workstations.

Technical summary

The vulnerability is a heap-based buffer overflow occurring during PAR file parsing in Siemens Solid Edge. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) indicates a local attack vector requiring user interaction but no privileges, with high impact on confidentiality, integrity, and availability. The attack surface is limited to users opening malicious PAR files. Remediation is available through vendor patch in V224.0 Update 2 or later.

Defensive priority

HIGH

Recommended defensive actions

  • Update Siemens Solid Edge to V224.0 Update 2 or later version
  • Implement user training to avoid opening untrusted PAR files from unknown sources
  • Apply principle of least privilege to limit impact of potential exploitation
  • Consider application whitelisting and endpoint protection for CAD workstations
  • Monitor for anomalous Solid Edge process behavior indicating potential exploitation attempts

Evidence notes

Vulnerability disclosed via CISA ICS advisory ICSA-24-137-09 and Siemens security advisory SSA-589937. CVSS vector confirms local attack vector with user interaction required.

Official resources

2024-05-14