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CVE-2021-45844 : Exploit Details and Defense Strategies

Discover the impact and mitigation strategies for CVE-2021-45844, a vulnerability in FreeCAD allowing OS command injection via crafted file names. Learn how to secure your systems.

This CVE involves improper sanitization in the invocation of ODA File Converter from FreeCAD 0.19, allowing an attacker to inject OS commands via a crafted filename.

Understanding CVE-2021-45844

This section provides an overview of the vulnerability and its impact.

What is CVE-2021-45844?

CVE-2021-45844 relates to a security issue in FreeCAD that enables attackers to execute malicious OS commands by manipulating filenames.

The Impact of CVE-2021-45844

The vulnerability permits threat actors to inject harmful commands into systems through specially crafted file names, potentially leading to unauthorized access or system compromise.

Technical Details of CVE-2021-45844

Explore the technical aspects of the CVE to better understand its implications.

Vulnerability Description

The flaw arises from flaws in command sanitization during the use of ODA File Converter within FreeCAD 0.19.

Affected Systems and Versions

        Product: N/A
        Vendor: N/A
        Versions: All affected due to inadequate sanitization of user inputs

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating filenames to insert malicious OS commands, leading to unauthorized actions on affected systems.

Mitigation and Prevention

Learn how to address and prevent potential exploits resulting from CVE-2021-45844.

Immediate Steps to Take

        Update FreeCAD to the latest patched version.
        Avoid opening files from untrusted or unknown sources.
        Implement file input validation to detect and block malicious filenames.

Long-Term Security Practices

        Enforce secure coding practices within software development to prevent command injection vulnerabilities.
        Regularly monitor and audit file-handling mechanisms for vulnerabilities and suspicious activities.

Patching and Updates

        Stay informed about security updates and patches released by FreeCAD.
        Promptly apply patches to mitigate the risk of exploitation.

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