CVE-2018-18964 : Exploit Details and Defense Strategies

In the "product" page of osCommerce 2.3.4.1, there is an issue with the incomplete implementation of blacklist filtering in the '.htaccess' file. Specifically, the '.htaccess' file located in catalog/images/ already blocks the html extension, but fails to address other extensions that can still execute HTML code, such as the svg extension.

Understanding CVE-2018-18964

osCommerce 2.3.4.1 has a vulnerability related to incomplete blacklist filtering in the '.htaccess' file.

What is CVE-2018-18964?

This CVE refers to a security issue in osCommerce 2.3.4.1 where the '.htaccess' file does not adequately filter certain file extensions, allowing potentially malicious code execution.

The Impact of CVE-2018-18964

The vulnerability could be exploited by attackers to execute HTML code through file extensions not properly filtered by the '.htaccess' file.

Technical Details of CVE-2018-18964

osCommerce 2.3.4.1 is affected by this vulnerability.

Vulnerability Description

The '.htaccess' file in catalog/images/ of osCommerce 2.3.4.1 does not effectively blacklist certain file extensions, leaving the system open to HTML code execution.

Affected Systems and Versions

Product: osCommerce 2.3.4.1
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by using file extensions like svg to execute HTML code on the affected osCommerce system.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Review and update the '.htaccess' file to include proper filtering for all potentially harmful file extensions.
Monitor system logs for any suspicious activity that might indicate exploitation of this vulnerability.

Long-Term Security Practices

Regularly audit and update security configurations to ensure robust protection against similar vulnerabilities.
Educate users and administrators on secure coding practices and the importance of proper input validation.

Patching and Updates

Check for patches or updates provided by osCommerce to address this vulnerability.