Seeyon WooYun Local File Inclusion Scanner

Seeyon WooYun is a collaborative software solution used in organizational environments to facilitate communication, document management, and workflow automation. Predominantly utilized by enterprises and government agencies, it is designed to improve productivity through seamless integration of various business functionalities. The software's widespread use in sensitive environments underscores the critical importance of its security. It offers tools for managing projects, tasks, and collaborative efforts across departments. Security features are integrated to protect sensitive business data and ensure compliance with regulations. The software's functionality is extensible through plugins and integrations, enhancing its appeal for complex institutional use.

The local file inclusion (LFI) vulnerability in Seeyon WooYun presents a significant security risk by allowing unauthorized file access. LFI vulnerabilities exploit insufficient input validation, permitting attackers to manipulate paths in application requests to access arbitrary files. This vulnerability can be used to retrieve sensitive files from the server's filesystem, compromising confidentiality. An exploited LFI vulnerability can be a stepping stone for further attacks, such as remote code execution or information disclosure. Attackers can use this to assemble detailed reconnaissance on a server's configuration and operational details. The prevalence of LFI vulnerabilities in web applications necessitates vigilant security testing and patch management.

The LFI vulnerability in Seeyon WooYun is primarily located in a service endpoint handling file paths, specifically the `filename` parameter in the `NCFindWeb?service=IPreAlertConfigService` request. The application fails to properly sanitize input, allowing path traversal characters to navigate the filesystem. When exploited, the endpoint discloses file contents marked by specific XML structures, like `<servlet-name>NCInvokerServlet</servlet-name>`. The HTTP server's response, containing an XML content-type, confirms the vulnerability. The endpoint’s high privilege requirement and wide application use exacerbate the potential impact of this vulnerability.

If exploited, the LFI vulnerability can lead to disclosure of sensitive configuration files, including credentials and application settings from the server. Attackers might use this access to further exploit the system through privilege escalation or launching denial-of-service attacks. Substantial data leakage from LFI exploitation may include log files and database dumps, constituting severe data breaches. LFI vulnerabilities can act as vectors for remote execution attacks if web server access logs are improperly handled. Efficiently exploiting LFI vulnerabilities can result in full system compromise, with attackers potentially executing arbitrary code.

REFERENCES

• https://wooyun.x10sec.org/static/bugs/wooyun-2015-0148227.html