CVE-2020-7521 Explained : Impact and Mitigation

A Path Traversal vulnerability in SFAPV9601 - APC Easy UPS On-Line Software V2.0 and earlier could allow attackers to upload executable files to unintended directories.

Understanding CVE-2020-7521

This CVE involves a Path Traversal vulnerability in the APC Easy UPS On-Line Software, potentially leading to unauthorized file uploads.

What is CVE-2020-7521?

The vulnerability arises when accessing a vulnerable method of

FileUploadServlet

, enabling the uploading of executable files to directories not intended for such files.

The Impact of CVE-2020-7521

Exploitation of this vulnerability could result in unauthorized file uploads, potentially leading to the execution of malicious code on affected systems.

Technical Details of CVE-2020-7521

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

Vulnerability Description

The vulnerability involves improper limitation of a pathname to a restricted directory, allowing for Path Traversal.

Affected Systems and Versions

Product: SFAPV9601 - APC Easy UPS On-Line Software V2.0 and earlier
Vendor: Not applicable

Exploitation Mechanism

Attackers can exploit the vulnerable

FileUploadServlet

method to upload executable files to directories not designated for such files.

Mitigation and Prevention

Protecting systems from CVE-2020-7521 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Restrict access to the vulnerable

FileUploadServlet

method.
Monitor file uploads for suspicious activities.

Long-Term Security Practices

Implement secure coding practices to prevent Path Traversal vulnerabilities.
Conduct regular security assessments and penetration testing.
Educate users on safe file upload practices.

Patching and Updates

Ensure that the affected software, SFAPV9601 - APC Easy UPS On-Line Software, is updated to a secure version to mitigate the Path Traversal vulnerability.