CVE-2018-20658 : Security Advisory and Response

A crafted XRMD command can be used by remote attackers to cause a denial of service (daemon crash) on 32-bit platforms running Core FTP 2.0 build 653.

Understanding CVE-2018-20658

The server in Core FTP 2.0 build 653 on 32-bit platforms allows remote attackers to cause a denial of service (daemon crash) via a crafted XRMD command.

What is CVE-2018-20658?

CVE-2018-20658 is a vulnerability that enables remote attackers to trigger a denial of service (daemon crash) on 32-bit platforms using a specifically crafted XRMD command in Core FTP 2.0 build 653.

The Impact of CVE-2018-20658

This vulnerability can be exploited by remote attackers to crash the Core FTP server, leading to a denial of service condition.

Technical Details of CVE-2018-20658

The technical details of this CVE include:

Vulnerability Description

Type: Denial of Service (DoS)
Attack Vector: Remote
Attack Complexity: Low
Privileges Required: None

Affected Systems and Versions

Core FTP 2.0 build 653 on 32-bit platforms

Exploitation Mechanism

Remote attackers can exploit the vulnerability by sending a specially crafted XRMD command to the Core FTP server, causing it to crash.

Mitigation and Prevention

To mitigate the risks associated with CVE-2018-20658, consider the following steps:

Immediate Steps to Take

Disable Core FTP server if not essential
Implement network-level protections to filter out malicious traffic
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update Core FTP to the latest version
Conduct security assessments and penetration testing regularly
Educate users on safe practices and security awareness

Patching and Updates

Apply patches and updates provided by Core FTP promptly to address the vulnerability