CVE-2021-41578 : Security Advisory and Response

mySCADA myDESIGNER 8.20.0 and below is vulnerable to Directory Traversal attacks when importing project files.

Understanding CVE-2021-41578

mySCADA myDESIGNER 8.20.0 and below allows Directory Traversal attacks during project file imports, enabling the attacker to write arbitrary files in permissible OS locations.

What is CVE-2021-41578?

Vulnerability in mySCADA myDESIGNER 8.20.0 and below
Allows Directory Traversal attacks via malicious project file import
Potential for unauthorized file writing and code execution

The Impact of CVE-2021-41578

The vulnerability allows attackers to execute arbitrary code on affected systems, compromising the integrity and security of user data and system resources.

Technical Details of CVE-2021-41578

Vulnerability Description

Directory Traversal vulnerability in mySCADA myDESIGNER 8.20.0 and below
Attackers can manipulate project file imports to write files to vulnerable OS locations

Affected Systems and Versions

Affected version: mySCADA myDESIGNER 8.20.0 and below

Exploitation Mechanism

Attacker tricks victim into importing malicious mep file
Allows writing of arbitrary files to OS locations with user permissions

Mitigation and Prevention

Immediate Steps to Take

Avoid importing project files from untrusted sources
Implement file input validation mechanisms
Regularly monitor and review file creation activities

Long-Term Security Practices

Conduct security awareness training on file handling best practices
Employ file system restrictions to limit file write permissions

Patching and Updates

Apply security patches and updates provided by mySCADA to fix the vulnerability