Siemens Simcenter Femap
Plan Patch7.8ICS-CERT ICSA-22-195-04Jul 12, 2022
Attack VectorLocal
Auth RequiredNone
ComplexityLow
User InteractionRequired
Summary
Siemens Simcenter Femap versions before V2022.2 contain an out-of-bounds write vulnerability (CWE-787) triggered when reading malicious X_T format files. If a user opens a crafted X_T file, an attacker can execute code in the application's process context. Siemens has released a fix in version 2022.2.
What this means
What could happen
An attacker could execute arbitrary code with the permissions of the user running Femap, potentially compromising engineering workstations and the integrity of CAD/simulation models used for plant design and analysis.
Who's at risk
Engineering teams and plant design departments that use Siemens Simcenter Femap for finite element analysis and CAD work. This includes civil, mechanical, and plant engineers who use Femap on workstations connected to the design network.
How it could be exploited
An attacker creates a malicious X_T format file and tricks or socially engineers a Femap user into opening it. When the file is opened in Femap, the out-of-bounds write is triggered, allowing the attacker to execute code in the context of the application process running on the engineering workstation.
Prerequisites
- User with Simcenter Femap installed must open a malicious X_T format file
- Social engineering or file delivery mechanism required to get user to open the file
- Femap version prior to 2022.2
requires user interaction to trigger (file opening)affects engineering workstations used for plant designcould compromise CAD/analysis modelssocial engineering attack vector
Exploitability
Low exploit probability (EPSS 0.4%)
Affected products (1)
ProductAffected VersionsFix Status
Simcenter Femap<V2022.22022.2
Remediation & Mitigation
0/4
Do now
0/2WORKAROUNDDo not open untrusted or unexpected X_T files in Simcenter Femap
HARDENINGEducate users on social engineering attacks and safe file handling practices; do not click links or open attachments from unsolicited emails
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate Simcenter Femap to version 2022.2 or later
Long-term hardening
0/1HARDENINGIsolate engineering workstations from the Internet and restrict network access to necessary connections only
CVEs (1)
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