CVE-2021-44076 Explained : Impact and Mitigation

An issue was discovered in CrushFTP 9 that allows an attacker to perform Stored Cross-Site Scripting (XSS) through the creation of a new user.

Understanding CVE-2021-44076

What is CVE-2021-44076?

CrushFTP 9 is vulnerable to Stored Cross-Site Scripting (XSS) through the user creation interface, enabling an attacker to execute malicious scripts.

The Impact of CVE-2021-44076

The vulnerability allows an attacker with access to the administration panel to execute payloads through XSS, posing a risk when the user's page is viewed in specific scenarios.

Technical Details of CVE-2021-44076

Vulnerability Description

Issue discovered in CrushFTP 9 user creation interface
Allows attacker to perform Stored Cross-Site Scripting (XSS)

Affected Systems and Versions

Product: CrushFTP 9
Vendor: CrushFTP
Versions affected: All

Exploitation Mechanism

Attacker needs access to the administration panel
Payload execution through XSS, especially when user's page is in Most Visited section

Mitigation and Prevention

Immediate Steps to Take

Update CrushFTP to the latest version
Restrict access to the administration panel

Long-Term Security Practices

Regularly monitor and audit user accounts and activities
Educate users about the risks of XSS attacks

Patching and Updates

Apply security patches and updates for CrushFTP to mitigate the XSS vulnerability