CVE-2020-27384 : Exploit Details and Defense Strategies

This CVE-2020-27384 article provides insights into an elevation of privileges vulnerability in the Gw2-64.exe in Guild Wars 2 launcher version 106916.

Understanding CVE-2020-27384

This section delves into the details of the vulnerability.

What is CVE-2020-27384?

The Gw2-64.exe in Guild Wars 2 launcher version 106916 is susceptible to an elevation of privileges vulnerability. This flaw allows an authenticated user to replace the existing executable file with a binary of their choice due to improper permissions.

The Impact of CVE-2020-27384

The vulnerability arises from incorrect permissions, specifically the 'F' flag (Full Control) for the 'Everyone' group, making the 'Guild Wars 2' directory and its contents world-writable.

Technical Details of CVE-2020-27384

Explore the technical aspects of this vulnerability.

Vulnerability Description

The Gw2-64.exe in Guild Wars 2 launcher version 106916 is vulnerable to an elevation of privileges attack, enabling an authenticated user to modify the executable file with a chosen binary due to improper permissions.

Affected Systems and Versions

Product: Guild Wars 2 launcher version 106916
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability allows an authenticated user to exploit improper permissions by leveraging the 'F' flag (Full Control) for the 'Everyone' group, granting the ability to modify the 'Guild Wars 2' directory and its contents.

Mitigation and Prevention

Learn how to mitigate and prevent this vulnerability.

Immediate Steps to Take

Restrict access permissions to critical directories and files.
Regularly monitor and audit file permissions to detect unauthorized changes.

Long-Term Security Practices

Implement the principle of least privilege to limit user access rights.
Conduct regular security training to educate users on best practices for file permissions.

Patching and Updates

Apply security patches and updates provided by the software vendor to address the vulnerability.