Elefant CMS File Upload drop privileges management

Vulnerability

Overview

A critical security flaw exists in Elefant CMS version 1.3.12-RC within the File Upload component. The vulnerability is triggered through the /filemanager/upload/drop endpoint, where improper privilege management occurs [1]. This issue allows an attacker to bypass intended access controls and perform actions without proper authorization [1].

Attack

Vector and Prerequisites

The attack can be launched remotely, meaning no prior access to the server is required [1]. The endpoint is designed to handle file uploads, but the lack of proper privilege checks means an unauthenticated user can interact with it [1]. The precise nature of the privilege failure is not detailed in the available references, but it centers on the upload functionality being accessible without the necessary authentication or authorization [1].

Potential

Impact

Successful exploitation grants an unauthenticated remote attacker the ability to upload arbitrary files to the server [1]. This could lead to further compromise, such as uploading a web shell to gain remote code execution, deface the website, or access sensitive data stored on the server [1]. The severity is rated as critical, highlighting the significant risk to the confidentiality, integrity, and availability of the affected system [1].

Mitigation

The vendor has addressed this vulnerability in Elefant CMS version 1.3.13 [1]. Users running version 1.3.12-RC or earlier are strongly advised to upgrade to the latest version to remediate the issue [1]. No workarounds or patches for earlier versions are mentioned [1].