CVE-2023-40049 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2023-40049, a vulnerability affecting WS_FTP Server prior to version 8.8.2, leading to information disclosure through directory listing.

Understanding CVE-2023-40049

CVE-2023-40049 is a vulnerability in WS_FTP Server that allows an unauthenticated user to enumerate files under the 'WebServiceHost' directory, potentially leading to sensitive information exposure.

What is CVE-2023-40049?

In WS_FTP Server versions below 8.8.2, an attacker without authentication can list files in the 'WebServiceHost' directory, which may include sensitive information, posing a risk to confidentiality.

The Impact of CVE-2023-40049

The impact of this vulnerability lies in the exposure of sensitive data to unauthorized actors, as outlined in CWE-200 with the CAPEC-497 (File Discovery) attack scenario.

Technical Details of CVE-2023-40049

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

WS_FTP Server versions before 8.8.2 allow unauthenticated users to browse files in the 'WebServiceHost' directory, potentially revealing sensitive data.

Affected Systems and Versions

The vulnerability affects WS_FTP Server version 8.8.0 and versions prior to 8.8.2.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending unauthenticated requests to the server, enabling them to list directory contents to access sensitive information.

Mitigation and Prevention

Outlined below are steps to mitigate the risks associated with CVE-2023-40049.

Immediate Steps to Take

Users are advised to update WS_FTP Server to version 8.8.2 or higher to patch the vulnerability and prevent information disclosure through directory listing.

Long-Term Security Practices

Implement access controls, authentication mechanisms, and regular security audits to prevent unauthorized access and information disclosure.

Patching and Updates

Stay informed about security updates from Progress Software Corporation and apply patches promptly to ensure the security of WS_FTP Server.