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CVE-2024-33489 Siemens CVE debrief

CVE-2024-33489 is a heap-based buffer overflow vulnerability in Siemens Solid Edge, a computer-aided design (CAD) application. The flaw exists in the application's parsing of specially crafted PAR (part) files. When a user opens a malicious PAR file, the vulnerability can trigger memory corruption, potentially allowing an attacker to execute arbitrary code within the context of the current process. The vulnerability was published on May 14, 2024, and carries a CVSS 3.1 score of 7.8 (HIGH severity). The attack vector is local, requiring user interaction to open a malicious file, but successful exploitation could result in complete compromise of confidentiality, integrity, and availability on the affected system.

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

Engineering organizations using Siemens Solid Edge for CAD/CAM/CAE workflows should prioritize this vulnerability. Organizations in manufacturing, aerospace, automotive, and industrial design sectors are particularly at risk due to common PAR file exchange practices. Security teams supporting OT/ICS environments with engineering workstations should include this in patch management cycles. Incident response teams should monitor for suspicious PAR file distribution as a potential attack vector against engineering supply chains.

Technical summary

The vulnerability is a heap-based buffer overflow occurring during PAR file parsing in Siemens Solid Edge. The PAR file format is used for storing 3D part geometry and feature data. Insufficient bounds checking during parsing of malformed file structures allows memory corruption. Exploitation requires social engineering to convince a user to open a malicious PAR file. Successful exploitation grants code execution with the privileges of the Solid Edge process, typically running in the context of an interactive user. The vulnerability does not require elevated privileges to trigger, but impact is constrained by the user's permissions.

Defensive priority

HIGH

Recommended defensive actions

  • Apply vendor fix: Update Siemens Solid Edge to V224.0 Update 5 or later version
  • Implement user awareness training to avoid opening untrusted PAR files from unknown sources
  • Consider application whitelisting and endpoint protection to detect anomalous Solid Edge process behavior
  • Review and restrict file sharing practices for PAR files within engineering workflows
  • Monitor for suspicious Solid Edge crash events that may indicate exploitation attempts

Evidence notes

The vulnerability description and remediation guidance are derived from CISA CSAF advisory ICSA-24-137-09, which references Siemens security advisory SSA-589937. The CVSS vector (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) confirms local attack vector with user interaction required, but high impact on confidentiality, integrity, and availability.

Official resources

2024-05-14