CNVD-2022-43245 Scanner

Weaver e-office is a collaborative mobile office platform widely used by enterprises to enhance productivity and streamline office work through digital solutions. It offers a suite of features including document management, workflow automation, and team collaboration tools. Primarily targeted at business users, Weaver e-office aims to increase efficiency and provide flexible work environments. Its integration capabilities allow for seamless operation across various business processes. Organizations use it to manage tasks, resources, and communications effectively. The platform's user-friendly interface is designed to support diverse operational requirements in modern office environments.

The Arbitrary File Read vulnerability in Weaver e-office allows attackers to access sensitive files stored on the server without authorization. Such vulnerabilities can lead to significant security breaches, especially if exploited to obtain confidential data. By sending specially crafted HTTP requests, malicious entities can manipulate file access endpoints. This vulnerability highlights fundamental weaknesses in input validation and access controls. Exploitable via network access, it remains a high-risk threat to systems that underestimate file access controls. It underscores the importance of robust security practices in application development and deployment.

This vulnerability is exploited by crafting an HTTP POST request to the XmlRpcServlet endpoint, specifying a target file path in the XML payload. The endpoint fails to sufficiently validate the file path, allowing unauthorized access to arbitrary files. The request in question involves a method call to 'WorkflowService.getAttachment', leveraging the XML-RPC protocol. A successful attack is confirmed when the response body contains base64 encoded data of the requested file. Proper defenses such as input validation and restricted file access permissions are crucial to mitigate this issue. Monitoring and logging suspicious requests can aid in early detection of exploitation attempts.

Exploiting this vulnerability allows attackers to access sensitive information, which can lead to further attacks such as privilege escalation or network intrusion. Critical system files and configuration files can be exposed, resulting in data breaches. The impact can include unauthorized disclosure of user credentials, configuration details, or intellectual property. Organizations might suffer reputational damage and financial loss due to compromised data integrity. Moreover, it could facilitate the deployment of more sophisticated attack vectors if attackers gain additional insights into system architecture. Addressing this vulnerability promptly can prevent its potential exploitation.