Crocus system Arbitrary File Read Scanner

Crocus system is utilized by various organizations for managing and executing their operations effectively. This software is designed for diverse deployment scenarios, making it suitable for small to medium enterprises as well as larger businesses. The ease of integration with existing systems increases its utility in digital infrastructure. IT administrators typically utilize Crocus system to ensure seamless operations and resource management. The software's versatility in handling big data and analytics makes it a popular choice for data-intensive industries. Crocus is known for its robust feature set which aids in handling complex processes within corporate settings.

The vulnerability in question is an Arbitrary File Read vulnerability present in the Service.do interface of the Crocus system. This allows unauthenticated attackers to read sensitive system files on affected deployments. Attackers could exploit this flaw to access database configuration and system files, thus potentially leading to further compromises. The vulnerability arises from inadequate handling of file paths in request parameters, permitting unintended file access. Proper implementation of input validation is seemingly lacking, thereby exposing the vulnerability. This flaw threatens the confidentiality of sensitive information stored on the affected systems.

The Crocus system’s vulnerability resides in its lack of input validation on the file path parameter in the Service.do endpoint. Specifically, an attacker can craft requests aiming at important files such as 'C:/windows/win.ini'. The request structure uses ‘Action=Download’ coupled with a path specifying the target file, exploiting the endpoint's inadequate security filtering. Successful exploitation returns file contents if the application replies with a status code 200, confirming the existence of requested files. Attackers exploit matching words in response bodies to affirm file access, such as keywords like "bit app support" and "fonts". This technical misstep facilitates unauthorized reading of system-critical files by remote attackers.

When exploited, this vulnerability can lead to unauthorized disclosure of sensitive data such as system configurations and database credentials. For businesses, this could mean potential exposure of proprietary information or customer data. The exploitation of such vulnerabilities could further lead to data breaches or full system compromises. Once critical configurations or authentication details are obtained, attackers may use them to execute higher-level attacks such as administrative access or broader network penetration. Ultimately, this undermines data integrity and the trustworthiness of the affected systems, potentially putting entire organizations at risk of operational disruption or financial loss.

REFERENCES

• https://github.com/wy876/POC/blob/main/%E9%94%90%E6%98%8E%E6%8A%80%E6%9C%AFCrocus%E7%B3%BB%E7%BB%9FService.do%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E.md