CVE-2018-18308 : Security Advisory and Response

A security issue has been found in the /admin/ajax/file-browser/upload/ (also known as the image upload area) of BigTree version 4.2.23, involving a Stored XSS vulnerability.

Understanding CVE-2018-18308

This CVE entry highlights a specific security vulnerability in BigTree version 4.2.23.

What is CVE-2018-18308?

In the 4.2.23 version of BigTree, a Stored XSS vulnerability has been discovered in /admin/ajax/file-browser/upload/ (aka the image upload area).

The Impact of CVE-2018-18308

This vulnerability could allow an attacker to execute malicious scripts in the context of an authenticated user on the affected system, potentially leading to unauthorized actions.

Technical Details of CVE-2018-18308

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in BigTree version 4.2.23 allows for Stored XSS, enabling attackers to inject and execute malicious scripts through the image upload area.

Affected Systems and Versions

Affected System: BigTree version 4.2.23
Affected Component: /admin/ajax/file-browser/upload/

affected

Vendor: BigTree

Exploitation Mechanism

The vulnerability can be exploited by uploading a specially crafted file containing malicious scripts to the image upload area, which, when executed, can compromise the system.

Mitigation and Prevention

Protecting systems from CVE-2018-18308 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to a patched version of BigTree that addresses the vulnerability.
Restrict access to the /admin/ajax/file-browser/upload/ area.
Implement input validation and output encoding to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and audit the application for security vulnerabilities.
Educate users on safe practices to prevent uploading malicious files.
Stay informed about security updates and patches for the software used.
Consider implementing a web application firewall to mitigate XSS attacks.

Patching and Updates

Ensure that all systems running BigTree version 4.2.23 are updated to a secure version that includes fixes for the Stored XSS vulnerability.