CVE-2020-21588 : Security Advisory and Response

Core FTP LE v2.2 is vulnerable to a buffer overflow, allowing local attackers to crash the system by exploiting a long string input in the Setup->Users->Username editbox.

Understanding CVE-2020-21588

This CVE identifies a buffer overflow vulnerability in Core FTP LE v2.2, which can be exploited by local attackers to cause a denial of service.

What is CVE-2020-21588?

The vulnerability in Core FTP LE v2.2 enables local attackers to crash the system by inputting an excessively long string in the Setup->Users->Username editbox.

The Impact of CVE-2020-21588

The exploitation of this vulnerability can lead to a denial of service (system crash) on the affected Core FTP LE v2.2 systems.

Technical Details of CVE-2020-21588

Core FTP LE v2.2's buffer overflow vulnerability is detailed below:

Vulnerability Description

A buffer overflow in Core FTP LE v2.2 allows local attackers to trigger a denial of service by inputting a long string in the Setup->Users->Username editbox.

Affected Systems and Versions

Product: Core FTP LE v2.2
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by local attackers who input an excessively long string in the Setup->Users->Username editbox.

Mitigation and Prevention

To address CVE-2020-21588, consider the following steps:

Immediate Steps to Take

Implement input validation to restrict the length of strings in user inputs.
Regularly monitor and update Core FTP LE to the latest version.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Educate users on secure coding practices and the importance of input validation.

Patching and Updates

Apply patches and updates provided by Core FTP to address the buffer overflow vulnerability in Core FTP LE v2.2.