CVE-2021-42024 : Exploit Details and Defense Strategies

A vulnerability has been identified in Simcenter STAR-CCM+ Viewer that could allow an attacker to execute arbitrary code.

Understanding CVE-2021-42024

This CVE discloses a critical issue in the Simcenter STAR-CCM+ Viewer software.

What is CVE-2021-42024?

The vulnerability in Simcenter STAR-CCM+ Viewer could lead to out-of-bounds write access, allowing malicious actors to run arbitrary code within the application's context.

The Impact of CVE-2021-42024

The vulnerability could result in unauthenticated remote attackers executing code within the affected application's process, potentially leading to unauthorized access or system compromise.

Technical Details of CVE-2021-42024

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The starview+.exe component in Simcenter STAR-CCM+ Viewer does not adequately validate user-supplied data during scene file parsing. This flaw may enable an out-of-bounds write beyond the allocated structure, potentially leading to code execution by an attacker.

Affected Systems and Versions

Product: Simcenter STAR-CCM+ Viewer
Vendor: Siemens
Versions Affected: All versions prior to 2021.3.1

Exploitation Mechanism

The vulnerability could be exploited by crafting specifically designed scene files to trigger the out-of-bounds write and execute malicious code.

Mitigation and Prevention

Protecting systems against CVE-2021-42024 requires specific actions to prevent exploitation and enhance security.

Immediate Steps to Take

Update Simcenter STAR-CCM+ Viewer to version 2021.3.1 or later if available.
Consider blocking the processing of untrusted or unknown scene files.
Monitor network traffic for any signs of malicious activity related to this vulnerability.

Long-Term Security Practices

Implement regular security training to educate users on identifying and reporting suspicious activities.
Enforce the principle of least privilege to restrict access rights to essential functions.

Patching and Updates

Stay informed about security updates from Siemens for Simcenter STAR-CCM+ Viewer.
Apply patches promptly to mitigate known vulnerabilities and enhance the software's resilience.