Wanhu ezoffice Arbitrary File Upload Scanner

Wanhu ezoffice is a performance-oriented office automation software widely used by businesses primarily for efficient document management and collaborative work processes. It provides various functionalities around office automation, including document editing, management, and sharing, making it popular among medium to large enterprises. The software enhances productivity by integrating seamless workflows and efficient content management solutions. Organizations utilizing Wanhu ezoffice include corporations across different sectors aiming to optimize their internal processes. This tool is pivotal for organizations that require robust documentation processes aligned with internal business practices. The comprehensive set of tools within the software allows users to streamline their operations and improve organizational efficiencies.

The Arbitrary File Upload vulnerability allows unauthorized users to upload malicious files to the server, potentially leading to unauthorized access or control. This type of vulnerability is serious as it can lead to further exploitation like code execution, data compromise, or system control. In Wanhu ezoffice, this vulnerability affects the wpsservlet endpoint, allowing files to be uploaded without proper validation. Attackers can exploit this flaw by uploading arbitrary files that could compromise the integrity and security of the server. The vulnerability is typically exploited over the network and can impact systems not configured to validate the files securely. This issue indicates weak input validation mechanisms in the software charged with handling file uploads.

This vulnerability primarily targets the wpsservlet endpoint, specifically leveraging the 'saveNewFile' option to upload files to unauthorized directories. The vulnerable parameter here is the ‘fileType’, which can be manipulated to accept and process unchecked file types. Attackers exploit this weakness by crafting requests that bypass existing security controls, allowing files to be saved directly to defined directories. The exploitation involves manipulating multipart form data to include malicious files, which are then processed by the server. Notably, the presence of an open directory at ‘/defaultroot/platform/portal/layout/’ increases the risk as attackers can directly place harmful files within accessible paths. Stakeholders should pay careful attention to this aspect of file processing to safeguard against unauthorized file uploads.

If exploited, this vulnerability can have severe repercussions on organizational data security and integrity. Malicious actors can deploy scripts that execute server-side commands, access sensitive data, or even take full control of the server. This could lead to data breaches, unauthorized access to confidential information, disruptions to business operations, and substantial financial losses. Additionally, the reputation of the organization can suffer a significant downturn if customer or partner data is compromised due to such vulnerabilities. The structural damage to IT systems can lead to prolonged downtime, affecting productivity and customer confidence. Thus, ensuring robust file upload validations is critical to mitigate potential exploitation risks effectively.