CVE-2019-12146 Explained : Impact and Mitigation

Progress ipswitch WS_FTP Server 2018 version prior to 8.6.1 has a vulnerability in SSHServerAPI.dll, leading to a Directory Traversal issue.

Understanding CVE-2019-12146

This CVE involves a security vulnerability in Progress ipswitch WS_FTP Server 2018.

What is CVE-2019-12146?

A flaw in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1 allows attackers to manipulate SCP listener strings, enabling them to create directories and write files outside their authorized directory.

The Impact of CVE-2019-12146

Exploiting this vulnerability can result in unauthorized access to sensitive files and directories, potentially leading to data breaches and unauthorized data manipulation.

Technical Details of CVE-2019-12146

This section provides technical insights into the CVE.

Vulnerability Description

The vulnerability in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1 allows attackers to perform Directory Traversal, creating directories and writing files outside their designated directory.

Affected Systems and Versions

Product: Progress ipswitch WS_FTP Server 2018
Versions affected: Prior to 8.6.1

Exploitation Mechanism

Attackers exploit the flaw in the SCP listener by manipulating specific string patterns to write files and create directories beyond their authorized location.

Mitigation and Prevention

Protect your systems from CVE-2019-12146 with the following measures.

Immediate Steps to Take

Update Progress ipswitch WS_FTP Server to version 8.6.1 or later.
Monitor SCP listener activities for suspicious patterns.

Long-Term Security Practices

Regularly audit and review file system permissions.
Implement network segmentation to limit access to critical directories.
Conduct security training to educate users on safe file management practices.

Patching and Updates

Apply security patches and updates provided by Progress ipswitch to address the vulnerability.